Fits Chrysler HEMI engines (6.2L) with a 4.090in bore.

Engineered for high-performance builds, Manley Premium Steel piston rings provide a reliable, durable seal under extreme combustion pressures. These file-fit rings allow engine builders to set precise end gaps tailored to specific heat cycles, making them the ideal choice for high-horsepower, forced induction, and nitrous-assisted applications. Each set features high-strength premium steel top rings and Napier-style second rings for superior oil control and cylinder wall scraping.

• Bore Size: 4.090in
• Ring Type: File Fit
• Top Ring Material: Premium Steel
• Second Ring Style: Napier-style
• Application: Forced induction, nitrous, and high-horsepower builds
• Compatibility: Chrysler HEMI 6.2L
• Quantity: Complete set for 8 cylinders

This Manley Premium Steel Piston Ring Set is engineered specifically for Chrysler 6.4L Hemi engines with a 4.100in bore. Designed for the rigors of high-horsepower builds, forced induction, and nitrous applications, these file-fit rings provide the precise tolerances and superior sealing required for extreme combustion pressures.

The set features a high-strength Premium Steel top ring for maximum durability under heavy thermal and mechanical load. It is paired with a Napier-style second ring, which provides superior oil control compared to standard taper-faced rings by effectively scraping excess oil from the cylinder wall. A three-piece oil ring assembly completes the set, ensuring consistent lubrication and minimal blow-by.

• Fits Chrysler 6.4L Hemi engines
• Bore Size: 4.100in
• Ring Dimensions: 1.5mm x 1.5mm x 3.0mm
• Top Ring Material: Premium Steel
• Second Ring Style: Napier-style for improved oil scraping
• Ring Type: File Fit for custom end-gap settings
• Quantity: Complete set for 8 pistons

This Manley Premium Steel Piston Ring Set is engineered for high-performance Chrysler engine builds, specifically those utilizing forced induction or nitrous oxide where combustion pressures are extreme. Designed for a 4.090in bore, this set features a high-strength steel top ring that provides superior durability and heat resistance compared to traditional ductile iron.

Every set is optimized for oil control and cylinder sealing. The inclusion of a Napier-style second ring comes standard with these Premium Steel sets to ensure efficient oil scraping, while the three-piece oil ring assembly maintains a consistent film on the cylinder wall. These components are essential for maintaining engine longevity and power output in demanding racing or street-performance applications.

• Bore Size: 4.090in
• Top Ring: 1.5mm Premium Steel
• Second Ring: Napier-style tapered face
• Oil Ring: 3.0mm three-piece design
• Application: Ideal for high-horsepower, forced induction, and nitrous builds
• Manufacturer: Manley Performance

Fits select Subaru WRX and STI models equipped with EJ205 or EJ257 engines and 100mm bores.

This Manley Performance piston ring set is engineered for the exacting tolerances required in high-output Subaru EJ-series builds. As a file-fit set, it provides engine builders the ability to precision-grind the ring end gaps to specific clearances, ensuring optimal performance for high-boost turbochargers or nitrous applications where standard

Fits Chrysler 5.7L Hemi engines.

Manley Series rod bearings are specifically selected to complement high-performance engine builds, providing the durability and oil control necessary for demanding street and racing applications. Sourced from industry-leading manufacturers such as ACL and Clevite, these bearings are engineered to handle the increased loads and high-RPM requirements of performance Chrysler small block Hemi engines.

• Precision-engineered for consistent oil clearance and reliable bearing crush.
• Manufactured from premium materials for superior strength and wear resistance.
• High fatigue resistance designed to withstand heavy engine loads.
• Optimal load-handling capabilities for long-lasting reliability in high-performance builds.
• Sourced from trusted performance brands including Clevite and ACL.

Fits Subaru FA20 2.0L engines.

Manley H-Tuff Series connecting rods are engineered for high-output FA20 builds that demand more strength than a standard H-beam can provide. Manufactured from high-strength 4340 forged steel, these rods undergo the same rigorous quality control and precision machining as Manley’s professional-tier Sportsmaster and Pro Series lines. Each rod is designed to handle increased cylinder pressures and higher RPM ranges common in turbocharged Subaru applications.

Every set is meticulously finished with attention to critical tolerances, including final hone size, thread detail, and strict limits on bend and twist. These rods utilize high-tensile ARP fasteners to ensure maximum clamping force and rod cap stability under extreme loads.

• Forged from 4340 aircraft-quality alloy steel
• H-Tuff design features a thicker beam cross-section for increased rigidity
• Meticulously finished to exacting tolerances for bore roundness and alignment
• Compatible with ARP 8740 or ARP 2000 bolt configurations
• Designed specifically for the Subaru FA20 2.0L platform

Fits Subaru EJ20 and EJ25 engines found in the WRX and STI. Manley H-Tuff Series connecting rods are engineered for high-output EJ-series builds that require more strength than a standard H-beam can provide. By incorporating a larger cross-sectional area, the H-Tuff design increases rigidity and fatigue life, making them an ideal choice for high-boost forced induction applications.

Each rod is manufactured from high-strength forgings and undergoes a meticulous finishing process. Manley maintains strict tolerances for final hone size, thread detail, bend, and twist to ensure a drop-in fit and reliable performance under extreme racing conditions. These sets are weight-matched to facilitate a balanced rotating assembly.

• Series: H-Tuff Beam
• Center-to-Center Length: 5.216in
• Engine Compatibility: Subaru EJ20 / EJ25
• Construction: Forged high-strength steel alloy
• Manufacturing: Precision finished for bend, twist, and bore sizing
• Hardware: Compatible with ARP 8740 or ARP 2000 bolts

Fits 2007-2013 Mazda 3 Mazdaspeed (2.3L).

Manley H-Tuff Series connecting rods are engineered for the high cylinder pressures of the MZR 2.3L DISI Turbo engine. Positioned as a heavy-duty H-Beam option, these rods provide the structural integrity necessary for increased boost and power levels while maintaining an economical price point. Each rod is manufactured to the same rigorous quality standards as Manley's professional-grade Sportsmaster and Pro Series components.

Precise manufacturing ensures that every rod meets exacting tolerances for final hone size, thread detail, and alignment. To ensure long-term reliability under load, these rods are meticulously checked for bend and twist. The H-Tuff series allows for tailored hardware configurations, offering a choice between ARP 8740 or high-strength ARP 2000 bolts to suit your specific build requirements.

• Specifically designed for Mazda MZR 2.3L DISI Turbo engines
• H-Tuff heavy-duty H-Beam construction for superior strength
• Finished to exacting tolerances for precision fitment
• Compatible with ARP 8740 or ARP 2000 rod bolt options
• Rigorous quality control including bend and twist verification

Fits 2008-2023 Mitsubishi 4B11T (2.0L) engines.

Manley H-Tuff Series connecting rods are the high-strength evolution of the traditional H-beam design, specifically engineered for high-horsepower Mitsubishi 4B11T builds. These 5.656-inch rods are forged from 4340 aircraft-quality material and are designed to handle significantly higher boost levels and RPMs than standard H-beams. Each rod is precision-finished in the USA to the same exacting standards as Manley’s Sportsmaster and Pro Series lines, ensuring consistent tolerances for bore size, thread detail, and alignment.

• Forged from 4340 vacuum-degassed steel for superior structural integrity
• Center-to-center length: 5.656in
• H-Tuff beam profile adds material in critical stress areas for increased rigidity in high-boost applications
• Shot-peened and 100% magnafluxed to ensure maximum fatigue life
• Final honed to exacting tolerances to ensure precision big-end and small-end fitment
• Weight-matched sets to ensure balanced rotating assembly performance
• Compatible with high-strength ARP 8740 or ARP 2000 cap screws

Designed for high-output Subaru EJ205 and EJ257 engines, the Manley H-Tuff Plus series provides a substantial strength upgrade over standard H-beam designs. These rods are engineered with a significantly thicker beam cross-section to handle the increased cylinder pressures and rotational stress found in high-boost street and track builds. Each rod is forged from 4340 aircraft-quality vacuum degassed material and meticulously finished to ensure precise big-end and small-end tolerances.

• Forged from 4340 aircraft-quality vacuum degassed steel
• H-Tuff Plus design features a thicker beam for higher horsepower and torque capacity than standard H-Beams
• Shot-peened after machining to MIL specifications and 100% individually magnafluxed
• Equipped with premium 3/8" ARP 2000 bolts for superior tensile strength and clamping force
• Weight-matched sets within 1.5 grams for balanced engine rotation
• Precision finished bore sizing, thread detail, and alignment (bend/twist)

These connecting rods are an essential upgrade for builders pushing the limits of the EJ platform, offering the reliability of the Pro Series at a competitive price point. This set is specifically designed for Subaru WRX and STi applications using the EJ205 or EJ257 crankshaft and piston configurations.

Fits select 2002-2021 Subaru WRX and WRX STI (EJ205 / EJ257).

Manley H-Tuff Series connecting rods provide a significant strength upgrade over standard H-beam designs, engineered specifically for high-output EJ-series engines. These rods bridge the gap between standard H-beams and heavy-duty I-beams, featuring a thicker beam cross-section to handle increased combustion pressures and higher RPMs. Each rod is forged from high-strength 4340 alloy and undergoes a rigorous manufacturing process to ensure dimensional stability and fatigue resistance.

Every set is finished to exacting tolerances, with meticulous attention paid to final hone size, thread detailing, and alignment. This precision ensures a drop-in fit with proper bearing clearances and rod-to-crank orientation, which is essential for maintaining oil film thickness and engine longevity in high-boost applications.

• Forged from 4340 aircraft-quality alloy for superior tensile strength
• Thicker H-Tuff beam design for increased rigidity under high cylinder pressures
• Precision-machined big and small ends to exacting tolerances
• Compatible with ARP 8740 or ARP 2000 cap screws for secure clamping
• Strictly inspected for bend, twist, and thread consistency
• Engineered for high-performance Subaru EJ205 and EJ257 engine builds

Fits select 1993-2006 Mitsubishi Eclipse, Lancer Evolution, and Eagle Talon (2.0L).

Manley H-Tuff H-Beam connecting rods are engineered for high-performance 4G63 and 4G63T engines that demand greater strength than standard H-beam options. These rods are manufactured to the same rigorous standards as Manley Sportsmaster and Pro Series components, providing a reliable solution for high-boost or high-RPM applications. Each rod undergoes meticulous finishing, including precision honing of the big-end bore and careful inspection of thread detail, bend, and twist to ensure perfect alignment within your short block.

• Center-to-center length: 5.905"
• Specifically designed for Mitsubishi 4G63/4G63T 2.0L engines
• H-Tuff beam profile offers increased cross-sectional thickness for superior rigidity
• Precision finished to exacting tolerances for reliable bearing crush and fitment
• Compatible with ARP 8740 or ARP 2000 3/8" rod bolts

Fits Subaru EJ205 and EJ257 engines.

Manley Turbo Tuff Pro Series I-Beam connecting rods are engineered to handle the extreme cylinder pressures and high RPMs found in built Subaru engines. These rods are manufactured from forged 4340 vacuum degassed steel, a process that removes impurities to ensure maximum material density and structural integrity. The I-beam configuration provides superior resistance to bending and compressive loads compared to standard H-beam designs, making them the preferred choice for high-boost applications.

This set includes premium ARP 625+ bolts. These fasteners offer significantly higher tensile strength than standard ARP2000 hardware, providing the critical clamping force necessary to maintain big-end roundness and bearing clearance under severe rotational stress.

• Center-to-Center Length: 5.216 in
• Material: Forged 4340 vacuum degassed alloy
• Beam Style: Turbo Tuff I-Beam
• Fasteners: Upgraded ARP 625+ bolts included
• NHRA Legal for select Stock and Super Stock classes

Fits 2007-2013 Mazda 3 Mazdaspeed (2.3L).

Manley Turbo Tuff Pro Series I-Beam connecting rods are engineered to manage the extreme cylinder pressures of the Mazda 2.3L DISI MZR turbocharged engine. Forged from high-strength 4340 or 300M vacuum degassed steel alloys, these rods provide the structural integrity required for high-horsepower builds where factory components are prone to failure. The precision-machined I-beam design optimizes the strength-to-weight ratio to ensure reliability under heavy boost and high RPM conditions.

• Manufactured from forged 4340 or 300M vacuum degassed steel alloys
• Robust I-beam construction for maximum rigidity and fatigue resistance
• Specifically engineered for the Mazda 2.3L DISI Turbo (MZR) platform
• NHRA Legal Certification for select SKUs (Stock and Super Stock)
• Available in multiple weight profiles: Tour Lite, Light, Standard, and Heavy
• Designed for professional racing and high-performance street applications

Designed to withstand the increased cylinder pressures of performance builds, the Manley H-Beam Series connecting rods provide a significant strength upgrade for Ford 2.3L EcoBoost engines. These rods are manufactured to the same rigorous standards as Manley's Pro Series, offering a precision-engineered solution for enthusiasts seeking reliability at an economical price point.

Each rod undergoes a meticulous finishing process where critical dimensions—including final hone size, thread detail, bend, and twist—are held to exacting tolerances. This set is specifically configured with high-strength ARP 2000 rod bolts, providing the necessary clamping force for high-RPM and forced induction applications where factory hardware often fails.

• Fits select Ford 2.3L EcoBoost engines (2.3L)
• Rod Design: H-Beam configuration for optimal strength-to-weight ratio
• Hardware: Includes premium ARP 2000 rod bolts
• Wrist Pin Diameter: .886 inch
• Finish: Meticulously honed and inspected for precise alignment and fitment

Fits Ford 2.0L EcoBoost engines (2.0L).

Manley H-Beam Series connecting rods provide a high-strength foundation for performance-built Ford 2.0L EcoBoost engines. Engineered to offer a significant upgrade over factory components, these rods are manufactured to the same rigorous standards as Manley’s premium Sportsmaster and Pro Series lines. The H-beam profile is designed to withstand the increased cylinder pressures and torsional loads found in high-boost turbocharged applications.

• Precision machined from high-strength forged material
• Includes premium ARP 2000 rod bolts for superior clamping force
• Designed for .886 inch diameter wrist pins
• Meticulously finished with strict attention to final hone size, bend, and twist
• Weight-matched sets ensure rotating assembly balance
• Engineered to exacting tolerances for drop-in reliability

Whether you are refreshing a street build or preparing for the track, these connecting rods provide the structural integrity needed to handle increased horsepower and torque without sacrificing long-term durability. Each rod undergoes thorough inspection of thread detail and surface finish to ensure it meets professional engine building requirements.

Fits Ford Modular engines (V8-4.6L).

Manley H-Beam Series connecting rods provide a high-strength, precision-engineered solution for Ford 4.6L engine builds. These rods are manufactured to the same rigorous standards as the renowned Sportsmaster and Pro Series lines, offering a significant upgrade over factory components for high-performance applications. Each rod is meticulously finished, with strict quality control measures applied to final hone size, thread detail, and alignment to ensure minimal bend and twist.

• Series: Manley H-Beam
• Engine Fitment: Ford Modular V8-4.6L
• Quantity: Single Connecting Rod
• Design: H-Beam profile for an optimal strength-to-weight ratio
• Hardware: Compatible with premium ARP 8740 or ARP 2000 bolts for superior clamping force
• Finish: Precision honed to exacting tolerances for consistent bearing clearance

Fits 1992-2001 Honda Prelude with the 2.2L VTEC DOHC H22 engine.

Manley H-Beam Series connecting rods offer a high-strength, precision-engineered solution for H22 engine builds, delivering the quality of premium forged components at an economical price point. These rods are manufactured to the same exacting standards as Manley’s Sportsmaster and Pro Series lines, ensuring reliable performance under high-load conditions.

Each rod undergoes a rigorous finishing process where final hone size, thread detail, bend, and twist are held to exceptionally tight tolerances. This attention to detail ensures perfect alignment and bearing clearance, which is critical for the longevity of high-revving VTEC engines.

• Forged H-Beam design for an optimized strength-to-weight ratio
• Precision-finished big and small ends for exact fitment
• Strictly monitored tolerances for bend and twist
• Compatible with ARP 8740 or ARP 2000 cap screws
• Engineered for high-performance and racing applications

Fits 1992+ Honda B16A 1.6L V-TEC DOHC engines.

Manley H-Beam Series connecting rods provide a high-strength, economical solution for engine builders who require precision and durability. Meticulously crafted to the same rigorous standards as the Manley Sportsmaster and Pro Series, these rods are designed to handle the stresses of high-performance and track applications.

• Precision-finished to exacting tolerances for final hone size and thread detail
• Each rod is thoroughly inspected and checked for bend and twist to ensure perfect alignment
• Manufactured from high-quality materials to provide a competitive advantage on the track
• Available with high-tensile ARP 8740 or ARP 2000 bolt options to suit specific build requirements
• Includes a full set of connecting rods for the B16A 1.6L DOHC engine

Fits 1986-1999 Toyota Celica and 1990-1999 MR2 equipped with the 3S-GTE DOHC engine.

Manley H-Beam Series connecting rods offer a precision-engineered solution for 3S-GTE builds requiring high structural integrity and reliability. Manufactured from aircraft-quality 4340 alloy, these rods are designed to bridge the gap between stock components and high-end race rods, maintaining the same manufacturing standards found in Manley’s Sportsmaster and Pro Series lines. Each rod is shot-peened to MIL specifications and undergoes individual magnetic particle inspection to ensure material consistency.

• Forged from high-strength 4340 aircraft-quality alloy for superior durability.
• Shot-peened and 100% magnetic particle inspected to identify surface irregularities.
• Precision-finished big and small end bores with strict tolerances on final hone size, thread detail, bend, and twist.
• Weight-matched sets ensure a balanced rotating assembly for smoother high-RPM operation.
• Specifically engineered to handle the increased cylinder pressures of forced induction 3S-GTE applications.

By focusing on exacting tolerances and material quality, Manley H-Beam rods provide the confidence needed for spirited street use or competitive track applications where factory rods may fail under increased boost.

Fits 1989-1998 Nissan 240SX models.

Manley H-Beam Series connecting rods provide a high-strength, precision-engineered foundation for performance engine builds. Designed to bridge the gap between stock components and high-end race rods, these H-Beam units offer the durability needed for increased boost and higher RPM ranges without the premium cost. Each rod is manufactured to the same rigorous quality standards as Manley’s Sportsmaster and Pro Series lines, ensuring reliable performance on the street or the track.

• Precision finished to exacting tolerances for hone size, thread detail, bend, and twist
• Manufactured from high-strength forged material for superior structural integrity
• H-Beam design optimized for an excellent strength-to-weight ratio
• Available with your choice of ARP 8740 or ARP 2000 cap screw bolts for maximum clamping force
• Weight-matched set of 4 ensures balanced engine rotation

By maintaining strict control over final dimensions and utilizing high-quality ARP hardware, Manley ensures these rods install correctly and stand up to the stresses of performance driving. Whether you are rebuilding a daily driver or preparing a drift chassis, these rods deliver the peace of mind that comes with proven American engineering.

Manley 7-degree valve locks provide the precision and strength required for high-performance valvetrain setups. These machined bead locks are designed to securely locate the valve spring retainer on a 5/16" (.3125) valve stem, ensuring stable valve operation even under heavy spring loads and high engine speeds.

Unlike stamped alternatives, these locks are CNC-machined from high-quality steel to exacting tolerances for a consistent fit and reliable clamping force. They are an essential component for engine builders looking for increased durability and valvetrain stability in racing or high-performance applications.

• Angle: 7 Degree
• Valve Stem Size: 5/16" (.3125)
• Lock Style: Machined Bead
• Material: Precision-machined steel
• Quantity: Set of 16

Fits Dodge 8.0L Viper V10 engines (8.0L).

Manley Race Master intake valves are engineered for the high-stress environments of bracket, drag, and oval track racing. Designed specifically for high-performance engines operating up to 8,000 RPM, these valves provide the thermal stability and structural integrity required for competition use. Each intake valve is manufactured from NK-842 stainless steel, offering superior durability over standard OE components.

The Race Master series features a straight stem design with swirl-polished under-head areas to optimize induction airflow and maximize volumetric efficiency. The combustion faces are fully machined to ensure uniform thickness. For extended service life in demanding racing conditions, Manley incorporates chrome-plated stems and hardened tips to resist wear at the guide and rocker arm contact points.

• Material: NK-842 Stainless Steel
• Head Diameter: 2.020 in
• Overall Length: 5.828 in
• Stem Style: Straight Stem (Race Master)
• Under-head Finish: Swirl Polished
• Features: Fully machined combustion face, chrome stems, and hard tips
• Quantity: Single

Fits select 2018-2020 Ford F-150 and Mustang GT (5.0L).

Restore a reliable seal and prevent oil leaks with the Mahle OE Valve Cover Gasket Set. Designed to meet or exceed original equipment specifications, these gaskets are critical for maintaining the integrity of your engine's sealing surfaces, especially as heat cycles take a toll on factory rubber. This set provides a precise fit for the 5.0L Coyote engine, ensuring that oil stays contained within the valve train and away from spark plug wells and exterior engine components.

• Direct replacement for a factory-level fit and finish
• Engineered with premium materials to resist high under-hood temperatures and oil exposure
• Helps prevent oil consumption and messy leaks onto the exhaust manifold
• Complete set for a comprehensive service of both valve covers

Fits 2011-Up Navistar MaxxForce 7 diesel engines.

Designed to meet demanding OE specifications, this Mahle Moly piston ring set is engineered for professional engine rebuilds where precision and durability are critical. These rings utilize advanced metallurgy and coatings to optimize the interface between the piston and cylinder wall, ensuring consistent compression and efficient thermal transfer.

• Reduces internal engine friction and reciprocating mass for improved mechanical efficiency
• Minimizes engine oil consumption by maintaining a superior cylinder seal throughout the stroke
• Molybdenum (Moly) coating provides enhanced wear resistance and extended service life under high thermal loads
• Technically advanced design driven by strict OE requirements for the MaxxForce 7 platform

Fits select 1989-2003 Dodge D250, D350, Ram 2500, Ram 3500 and Ford F-600, F-700, F-800, and L-Series models equipped with the Cummins B-Series turbocharged engine.

These Mahle piston rings are engineered to meet the demanding requirements of turbocharged Cummins B-Series engines. By utilizing a ceramic chrome top ring, this set provides superior heat resistance and a high-integrity seal under the increased cylinder pressures of forced induction. These rings are designed to minimize friction and reduce ring mass, which directly improves engine efficiency and provides a longer service life compared to standard replacement sets.

• Ceramic chrome top ring construction for enhanced wear resistance in turbocharged applications
• Engineered to minimize oil consumption and maintain peak compression
• Designed to meet or exceed OE specifications for fit, tension, and material hardness
• Reduces internal friction to improve overall engine performance and longevity

Fits select 1989-2003 Dodge D250, D350, W250, W350, and Ram 2500/3500, as well as 1993-1999 Ford CF7000, F-600, F-700, F-800, L8501, and LN7000 trucks equipped with the Cummins B-Series turbocharged engine.

Maintain peak cylinder pressure and optimize oil control in your Cummins B-Series engine with this Mahle piston ring set. Specifically engineered for the high-thermal and pressure demands of turbocharged applications, these rings utilize a ceramic chrome top ring coating to provide a durable, heat-resistant seal against the cylinder wall. Mahle's OE-driven design focuses on reducing friction and ring mass to minimize parasitic loss while significantly extending service life in heavy-duty or commercial environments.

• Specifically designed for turbocharged Cummins B-Series engines
• Ceramic chrome top ring construction for superior heat resistance and durability
• Engineered to reduce internal friction and minimize engine oil consumption
• Precision-manufactured to meet or exceed original equipment requirements
• Complete set for a reliable professional-grade rebuild

Fits select 1989-2009 Dodge D250, D350, W250, W350, Ram 2500, Ram 3500, and Ram 3500 Van models equipped with Cummins B-Series turbocharged engines.

Engineered to meet rigorous OE requirements, this Mahle piston ring set is designed for the high-demand environment of turbocharged Cummins B-Series engines. These rings feature advanced ceramic chrome top ring technology, which provides superior heat resistance and durability under high cylinder pressures. By reducing ring mass and optimizing tension, this set effectively minimizes friction and engine oil consumption while extending service life during heavy-duty use or performance rebuilds.

• Ceramic Chrome Top Ring: Enhances wear resistance and manages the thermal loads typical of turbocharged diesel applications.
• Reduced Friction: Engineered to lower parasitic loss and improve overall engine efficiency.
• Oil Control: Precision-manufactured to minimize oil consumption and maintain clean combustion.
• OE Quality: Designed to the exact tolerances required for a reliable factory-style fit and seal.

Fits select 1989-2009 Dodge D250, D350, W250, W350, Ram 2500, Ram 3500, and Ram 3500 Van (3.8L / 5.9L).

These Mahle piston rings are engineered to meet strict OE requirements for Cummins ISB, ISF, and B5.9G engine platforms. Designed to optimize engine sealing, this chrome-faced ring set focuses on reducing friction and ring mass, which directly contributes to minimized oil consumption and a longer service life for the rotating assembly. Whether you are performing a standard refresh or a complete engine overhaul, these 102mm bore rings provide the precise tolerances needed to maintain compression and performance.

• Bore Diameter: 102mm / 4.017in
• Finish: Chrome-faced for durability and wear resistance
• Engine Compatibility: Cummins ISB, ISF 3.8L, and 5.9L / B5.9G
• Designed to reduce internal friction and parasitic loss
• High-grade materials minimize ring mass and oil bypass

Fits select 2011-2017 Ford F-250, F-350, F-450, and F-550 Super Duty (6.7L).

MAHLE Moly piston rings are engineered to meet the demanding original equipment requirements of the 6.7L Powerstroke diesel engine. These rings are designed to reduce internal friction and reciprocating mass, which directly contributes to minimized oil consumption and a longer service life. Built with advanced ring technology, they provide the reliable sealing performance required for high-pressure diesel combustion and heavy-duty towing applications.

• Moly-faced coating for reduced friction and improved wear resistance
• Engineered to minimize engine oil consumption
• Precision-machined to OE specifications for a perfect fit
• Reduced ring mass for improved engine efficiency