Designed for high-performance Nissan RB26 engines, this Boundary MartenWear Treated Billet Oil Pump Gear is a critical upgrade for the 81mm OEM oil pump housing.

The RB26 platform is often limited by its factory sintered oil pump gears, which are prone to shattering under high-RPM stress or aggressive rev-limiter use. Boundary addresses this by utilizing precision-machined billet steel for maximum structural integrity. The addition of their proprietary MartenWear surface treatment significantly increases surface hardness and reduces friction, providing a durable solution that stands up to the demands of track and street-performance builds.

• Direct replacement for the inner and outer gears in 81mm OEM housings
• Machined from high-strength billet steel to prevent fatigue and shattering
• MartenWear treated for superior wear resistance and reduced friction
• Ensures consistent oil pressure and reliability during high-RPM operation
• Manufacturer Part Number: RB26-81-OPG-M

Protect your high-performance engine from catastrophic failure with the Boundary Billet Oil Pump Gear. This critical upgrade fits select 2011-present Ford Mustang GT and GT350 models equipped with the 5.0L Coyote or 5.2L V8 engines.

Factory oil pump gears are typically manufactured from sintered metal, which can become brittle and shatter under the stresses of high-RPM operation, harmonic vibration, or forced induction. Boundary addresses this vulnerability by replacing the OE components with high-strength billet gears. These are designed to maintain consistent oil pressure and structural integrity in demanding street, strip, and track applications.

• Direct replacement for the factory sintered oil pump gears
• Precision-machined billet construction for maximum durability
• Essential for high-RPM, supercharged, or turbocharged builds
• Compatible with 5.0L Coyote and 5.2L V8 platforms
• Manufacturer Part Number: CM-OPG-MUSTANG

Fits 2011-2024 Ford Mustang GT and GT350 (V8-5.0L / 5.2L).

Protect your engine from the common failure point of the factory powdered-metal oil pump gears. The Boundary Billet Dual Rotor Oil Pump Gear set is engineered for high-RPM and forced-induction Coyote applications where vibration and stress can cause OE gears to shatter. These gears are CNC-machined from high-strength billet steel to ensure structural integrity under extreme loads.

• MartenWear Treated: A proprietary surface hardening process that significantly reduces friction and increases wear resistance for a longer service life.
• Dual Rotor Design: Precision-engineered to match the high-output flow requirements of the 5.0L and 5.2L Coyote oiling systems.
• Billet Construction: Eliminates the brittleness of factory components, providing the reliability needed for track use and boost.
• Manufacturer Part Number: CM-OPG-MUSTANG-DR

Fits all 2011+ Ford Coyote 5.0L V8 engines.

The Boundary Billet Oil Pump Backing Plate (CM-BBP) is a critical reliability upgrade for high-performance Ford Coyote builds. Factory oil pump plates are often prone to flexing under the extreme hydraulic loads found in high-RPM or forced-induction applications. This flex allows oil to bypass the gears, leading to pressure drops and potential engine failure. This billet plate provides the necessary rigidity to maintain a tight seal and keep your oiling system stable.

• Precision CNC machined from high-strength billet material
• Eliminates plate deflection to ensure consistent oil pressure at high RPM
• Precision ground surfaces for a perfect seal against the pump housing
• Essential for Mustang and F-150 engines seeing track use or boost
• Manufacturer Part Number: CM-BBP

Fits Nissan vehicles equipped with the VK56 engine (5.6L).

The Boundary VK56-S1 Billet Oil Pump Assembly is a vital upgrade for high-performance builds and heavy-duty applications. While factory oil pumps often rely on sintered metal gears that can fracture under high-stress or high-RPM conditions, this assembly utilizes precision-machined billet internals to ensure superior strength and reliability. It is designed to provide stable oil pressure and consistent flow, protecting your engine's critical bearings during aggressive driving or towing.

• CNC-machined billet gears for maximum durability and fatigue resistance
• Direct-fit replacement for the factory oil pump assembly
• Engineered to maintain consistent oil pressure across the entire RPM range
• Fully assembled and ready for installation into the engine block
• Manufacturer Part Number: VK56-S1

Fits 2020-2025 Ford Mustang GT500 and 2025 Ford Mustang GTD (5.2L).

Secure the lubrication system of your high-performance 5.2L engine with the Boundary Billet Vane Ported Oil Pump Assembly. This unit is specifically engineered to address the demands of high-RPM and high-load applications found in the GT500 and GTD platforms. By utilizing high-strength billet steel vanes and a precision-ported housing, this assembly reduces cavitation and optimizes fluid dynamics to maintain stable oil pressure under extreme conditions.

As a complete assembly, it replaces the factory unit with upgraded internal components that offer superior resistance to fatigue and failure compared to standard cast alternatives. This is a critical upgrade for enthusiasts seeking to maximize engine longevity in track-focused or high-horsepower builds.

• Manufacturer Part Number: CM-S2-GT500
• Optimized for the Ford 5.2L engine platform
• Precision-ported housing for increased flow and reduced turbulence
• High-strength billet steel vanes for improved durability over OE components
• Designed to maintain consistent oil pressure across the entire powerband
• Complete assembly for straightforward installation

Fits 2018-2023 Ford Mustang GT and F-150 models equipped with the 5.0L Coyote V8 engine.

Maintain critical lubrication and engine health with the Boundary Oil Pump Assembly. This complete unit is designed to meet the demands of the Gen 3 Coyote platform, providing a reliable solution for owners replacing a worn factory pump or upgrading their oiling system. Proper oil pressure is essential for the variable valve timing (VCT) system and the longevity of internal engine components in high-performance applications.

• Manufacturer Part Number: CM-S1-R2
• Vehicle Fitment: 2018-2023 Ford Mustang GT; 2018-2023 Ford F-150
• Engine Compatibility: 5.0L Coyote V8
• Product Type: Complete Oil Pump Assembly

Fits 2011-2024 Ford Mustang GT and GT350 models equipped with the Coyote V8 engine.

Protect your high-performance Coyote engine with the Boundary MartenWear Treated Billet Oil Pump Gear. The factory sintered metal gears are a notorious failure point, prone to shattering under the stresses of high-RPM operation, harmonic vibration, or forced induction. This billet upgrade replaces those brittle components with precision-engineered steel to ensure consistent oil pressure and long-term engine survival.

Boundary utilizes their proprietary MartenWear surface treatment, which significantly increases surface hardness while reducing friction between the gears and the pump housing. This specialized finish prevents the scuffing and galling often found in high-load applications, making it a mandatory upgrade for any serious track or street build.

• Precision CNC-machined from high-strength billet steel
• MartenWear surface treatment for superior hardness and friction reduction
• Eliminates the primary weak point in the Coyote oiling system
• Engineered to maintain strict tolerances for reliable oil flow
• Manufacturer Part Number: CM-OPG-MUSTANG-M

Fits 1999-2015 Ford Modular V8 engines (all types).

Maintain consistent oil pressure and ensure engine longevity with the Boundary MM-S1 oil pump assembly. Engineered as a direct-fit solution for the Ford Modular V8 platform, this assembly is a critical upgrade for high-performance builds where oiling reliability cannot be compromised. By replacing a worn or factory-standard pump, you ensure steady lubricant flow across the entire RPM range.

• Direct replacement for 1999-2015 Ford Modular V8 engines
• Complete assembly ready for installation
• Engineered for consistent pressure and flow under high-load conditions
• Manufacturer Part Number: MM-S1

Fits 2024+ Ford models equipped with the Coyote V8 engine.

The Boundary CM-S1-R3 Oil Pump Assembly provides essential lubrication and pressure management for the latest generation of Ford's 5.0L power plant. As a complete housing and gear assembly, this unit is designed to meet or exceed the flow requirements of the Coyote V8, ensuring that critical engine components receive consistent oiling across the entire RPM range.

• Designed specifically for the 2024 and newer Ford Coyote V8 engine architecture
• Complete oil pump assembly for a direct-fit installation
• Maintains stable oil pressure under high-load conditions
• Replaces factory part number configurations for all 2024+ Coyote types
• Manufacturer Part Number: CM-S1-R3

Upgrade your engine's oiling system with the Boundary Billet High Flow Oil Pump Gear, specifically engineered for the Mitsubishi 6G75 V6 (3.8L). This precision-machined component replaces the factory sintered metal gears, which are prone to failure in high-RPM or high-performance applications. By utilizing high-strength billet materials, this gear set provides the durability required for demanding builds while optimizing oil flow to ensure consistent pressure across the entire powerband.

Designed as a direct-fit internal upgrade for the factory oil pump housing, this gear set (MPN: 6G75-OPG) is essential for enthusiasts seeking to protect their 3.8L engine from catastrophic oiling failures. The increased flow capacity and material integrity make it a staple for both forced induction and high-revving naturally aspirated 6G75 platforms.

• Fits Mitsubishi 6G75 V6 engines (3.8L)
• CNC-machined from high-grade billet steel for maximum durability
• Engineered for high-flow capacity to maintain stable oil pressure
• Direct replacement for OEM oil pump gear internals
• Manufacturer Part Number: 6G75-OPG

Upgrade your engine's oiling system with the Boundary High Flow Billet Oil Pump Gear, specifically engineered for Honda 1.8L I4 engines. This high-strength billet gear is designed to replace factory components that are prone to failure under the stresses of high-RPM operation and performance driving. By utilizing precision-machined materials, this gear provides superior durability and consistent oil flow where stock sintered metal gears might shatter.

• CNC-machined from high-grade billet steel for maximum fatigue resistance
• High-flow geometry optimized for consistent lubrication at elevated RPMs
• Direct replacement for gears inside the Orbit Pump housing
• Manufacturer Part Number: B18-OPG

Fits select Honda vehicles equipped with the 1.8L I4 engine and an Orbit Pump.

Fits 2012-2021 Subaru BRZ (2.0L).

Protect your engine from oiling system failure with the Boundary 12mm Billet Oil Pump Gear set. Designed specifically for the FA20D engine found in the Subaru BRZ, these gears replace the factory sintered metal components that are prone to shattering under high-RPM stress or extreme harmonic vibrations. Machining these gears from high-strength billet steel ensures they maintain structural integrity where the stock pieces often fail.

Whether you are building a high-revving naturally aspirated engine or a forced induction track car, reliable oil pressure is non-negotiable. This 12mm gear set is a direct-fit solution that provides the durability required for performance driving. Note: this specific part number is verified for Subaru BRZ fitment.

• 12mm thickness for precise fitment in the factory housing
• Precision-machined from high-strength billet steel
• Designed to withstand high RPMs and performance harmonics
• Direct replacement for the fragile factory sintered gears
• Manufacturer Part Number: FA20D-12MM-OPG

Fits 2015-2024 Ford Mustang and F-150 models equipped with the 5.0L Coyote V8 engine.

The Boundary Grip Series Billet Crankshaft Timing Sprocket is a critical upgrade for high-performance Ford Coyote builds. Standard powdered-metal gears are a known failure point in high-RPM and forced induction applications. This sprocket is CNC-machined from high-strength billet steel to provide the structural integrity required for racing and high-boost environments.

To prevent timing shift or gear slippage on the crankshaft snout, this Grip Series gear features Boundary’s High Friction Surface (HFS) technology. This specialized treatment significantly increases the coefficient of friction on the mating surfaces, ensuring the gear stays locked in place even under extreme torsional loads. This is a direct-fit replacement for the factory timing drive gear.

• Precision CNC-machined from high-strength billet steel
• Grip Series High Friction Surface (HFS) prevents sprocket slippage
• Engineered for high-boost and high-revving N/A applications
• Replaces failure-prone factory powdered metal components
• Manufacturer Part Number: CM-SP-15-GRIP

Fits 1989-1991.5 Ford and Mazda models equipped with the BP 1.6L I4 engine.

Protect your engine's vitals with a precision-engineered Boundary oil pump assembly. This unit (MPN: BP-S2-SNC) is specifically designed for the early 1989 to mid-1991 1.6L BP engine applications, providing the consistent oil pressure and volume necessary for long-term engine health. Whether you are performing a standard rebuild or refreshing a high-mileage engine, this assembly ensures your lubrication system operates within factory tolerances.

• Precision-machined internal components for stable oil pressure
• Direct replacement for 1989-1991.5 BP 1.6L I4 oil pumps
• Manufacturer Part Number: BP-S2-SNC
• Note: This assembly is provided without the crank seal

Fits 1993-2002 Toyota Supra models equipped with the 2JZ engine (2JZ-GE / 2JZ-GTE).

The Boundary billet oil pump gear set is a critical upgrade for high-performance 2JZ builds where the factory sintered-metal gears are prone to shattering under high RPM or vibration. These gears are CNC-machined from high-strength billet steel to provide a significant increase in fatigue resistance and durability over OE components.

This dual rotor set features Boundary's proprietary MartenWear treatment. This specialized surface processing increases surface hardness and significantly reduces friction, ensuring long-term reliability and consistent oil pressure in demanding street and track environments. By replacing the brittle factory gears with this billet solution, you eliminate a known weak point in the 2JZ oiling system.

• Billet steel construction for superior strength and fatigue resistance
• MartenWear surface treatment for increased hardness and reduced friction
• Dual rotor design optimized for 2JZ oil pump housings
• Direct replacement for 1993-2002 Toyota 2JZ oil pump gears
• Manufacturer Part Number: 2JZ-OPG-DR

Fits Nissan VQ-series engines including VQ35DE, VQ35HR, and VQ37VHR.

This Boundary oil pump relief valve shim kit allows for precise adjustment of your engine's oil pressure. By increasing the preload on the oil pump's internal bypass spring, these shims raise the pressure at which the relief valve opens, ensuring adequate lubrication for high-RPM operation or forced induction applications. The kit provides a modular approach to tuning your oiling system, allowing you to achieve the target PSI required for your specific build tolerances.

• Increments: Provides 10 PSI, 20 PSI, or 30 PSI increases based on shim selection
• Quantity: 3 precision-machined shims included
• Function: Increases spring tension in the factory oil pump relief valve
• Engine Compatibility: All Nissan VQ and VHR variants
• Manufacturer Part Number: VQ-SH-K

Fits Nissan VQ35DE 3.5L engines.

The Boundary Nissan VQ 3.5L DE Oil Pump Assembly (MPN: VQ-S2-DE) is a critical upgrade for enthusiasts looking to secure the lubrication system of their high-performance VQ engine. This complete assembly is designed to provide stable oil pressure and reliable flow under the demanding conditions of track use or forced induction, where factory components are prone to failure.

• Direct replacement for the factory oil pump assembly on VQ35DE platforms
• Engineered to maintain consistent oil volume and pressure across the RPM range
• Provides essential protection for engine bearings and valvetrain components
• Precision-machined internal components for tight tolerances and durability
• Manufacturer Part Number: VQ-S2-DE

Protect your high-revving VHR engine with the Boundary Nissan VQ 3.5L/3.7L Oil Pump Assembly. This precision-engineered unit is designed to address the primary weaknesses of the factory oiling system, specifically the housing flex and gear cavitation that can occur during aggressive driving or track use.

This assembly features a CNC-machined billet back plate, which provides significantly higher rigidity than the standard cast plate. By minimizing flex, the pump maintains tighter internal tolerances and consistent oil pressure across the entire RPM range. It is a direct-fit solution for the VQ35VHR and VQ37VHR engines, making it an essential upgrade for forced induction or high-RPM naturally aspirated builds.

• Complete oil pump assembly for direct replacement of the OE unit
• Billet back plate increases housing rigidity and reduces gear cavitation
• Ensures stable oil pressure at high RPMs for engine longevity
• Engineered for Nissan VQ35VHR and VQ37VHR (3.5L / 3.7L) platforms
• Manufacturer Part Number: VQ-S1-VHR-BBP

Protect your engine's bottom end with the Boundary Oil Pump Assembly for Nissan VQ35 and VQ37 VHR engines (3.5L / 3.7L). This complete housing and gear assembly is engineered to provide the consistent oil pressure required for high-RPM operation and forced induction setups where factory sintered-metal gears are prone to failure.

• Direct replacement for the factory VHR oil pump assembly.
• Equipped with high-strength billet steel internals to prevent gear shatter at high engine speeds.
• Precision-ground tolerances ensure optimal flow and reduced cavitation.
• Critical upgrade for track-driven or high-horsepower Nissan Z and G chassis.
• Manufacturer Part Number: VQ-S1-VHR.

Protect your high-revving engine with the Boundary Billet Oil Pump Gear, specifically engineered for Nissan VQ35HR and VQ37VHR platforms. Factory oil pump gears are typically made from sintered metal, which is prone to shattering under the vibrations and stress of high-RPM use or forced induction. This billet steel upgrade provides the fatigue resistance and strength necessary for performance builds.

Precision-machined to exact tolerances, the VQ-OPG-VHR replaces the weak internal components of your factory oil pump housing. It ensures consistent oil pressure and structural integrity during track use or spirited driving, solving one of the primary failure points in the VQ-series VHR oiling system.

• Manufactured from high-strength billet steel to prevent catastrophic gear failure
• Precision ground for optimal fitment and consistent oil flow
• Essential for high-RPM, forced induction, or endurance racing applications
• Designed as a direct internal replacement for OEM VHR-style oil pumps
• Manufacturer Part Number: VQ-OPG-VHR

Protect your engine from catastrophic oiling failure with the Boundary Billet Oil Pump Gear, engineered specifically for the Nissan VQ35DE engine. Factory sintered metal gears are often the weak link in high-performance Nissan builds, prone to shattering under the extreme harmonics and centrifugal loads of high-RPM operation. This gear set provides the durability required for forced induction or high-revving track applications.

• Precision machined from high-strength billet steel for superior fatigue resistance
• Eliminates the risk of oil pump gear failure common in high-RPM VQ35DE engines
• Engineered for precise fitment and consistent oil pressure throughout the rev range
• Direct replacement for factory internal oil pump gears
• Manufacturer Part Number: VQ-OPG-DE

Fits 1989-2000 Nissan 300ZX and Fairlady Z models equipped with the V6-3.0L (VG30DETT) engine.

Engineered for high-performance builds, this Boundary billet oil pump gear replaces the fragile factory sintered gears that are prone to failure under high RPM and increased harmonic stress. CNC-machined from high-strength billet steel, these gears provide the structural integrity required for modified VG30DETT engines.

This gear set features Boundary's proprietary MartenWear treatment, a specialized surface hardening process that significantly reduces friction and enhances wear resistance. This ensures stable oil pressure and long-term reliability for both track-focused and high-horsepower street applications.

• Precision CNC-machined billet steel construction
• Proprietary MartenWear surface treatment for superior durability
• Increases resistance to gear shatter and premature wear
• Direct replacement for factory oil pump internals
• Manufacturer Part Number: VG30DETT-OPG-M

Fits 1989-2000 Nissan 300ZX and Fairlady Z models equipped with the VG30DETT engine (V6-3.0L).

Protect your engine with the Boundary Billet Oil Pump Gear, an essential upgrade for any high-performance Z32 build. Factory oil pump gears are typically made from sintered metal, which is prone to shattering under the stress of high RPMs or harmonic vibrations. This billet steel replacement provides the structural integrity needed to ensure consistent oil pressure and prevent catastrophic engine failure.

• Precision CNC machined from high-strength billet steel for maximum durability
• Designed to withstand the rigors of high-RPM and forced induction applications
• Direct replacement for the OEM oil pump gear components
• Superior fatigue resistance compared to sintered factory parts
• Manufacturer Part Number: VG30DETT-OPG

Protect your high-performance RB26DETT from catastrophic oil pump failure with the Boundary Billet Oil Pump Gear. Specifically engineered for the Nissan N1 oil pump housing, these gears replace the fragile factory sintered units which are prone to shattering under high-RPM harmonics or sudden engine deceleration.

Each gear is precision CNC-machined and features Boundary’s proprietary MartenWear treatment. This specialized surface hardening process significantly increases wear resistance and reduces friction, ensuring consistent oil pressure and long-term reliability in demanding street or track conditions.

• Fits Nissan RB26DETT (2.6L) equipped with N1 oil pump housings
• CNC-machined billet construction eliminates common failure points of cast/sintered gears
• MartenWear surface treatment for superior hardness and reduced friction
• Engineered for high-RPM stability and oiling consistency
• Manufacturer Part Number: RB26N1-OPG-M

Fits Nissan RB26DETT N1 engines (2.6L).

Protect your high-performance engine with the Boundary Billet Oil Pump Gear. In the RB26 platform, factory sintered metal gears are a known failure point when subjected to high RPMs or extreme harmonics. Boundary addresses this by CNC-machining their gears from high-strength billet steel, providing the structural integrity required for track-day use and forced-induction builds.

• CNC-machined from high-strength billet steel to prevent shattering and failure
• Specifically engineered to fit the RB26DETT N1 oil pump housing
• Ensures consistent oil pressure and volume under racing conditions
• Direct replacement for the original internal gear set
• Manufacturer Part Number: RB26N1-OPG

Protect your engine from high-RPM oiling failure with the Boundary Billet Oil Pump Gear set for the Nissan RB26. While factory oil pump gears are typically made from brittle sintered metal that can shatter under extreme harmonics or heavy loads, these billet components are precision-machined for the durability required in high-performance builds.

Designed as a direct internal replacement, this 81mm gear set fits within the factory (OEM) oil pump housing. It provides the necessary strength to maintain consistent oil pressure during track use and high-horsepower applications, preventing the catastrophic failure often associated with OEM gear fragmentation.

• Precision-machined from high-strength billet steel for maximum durability
• 81mm diameter engineered specifically for the factory RB26 oil pump housing
• Superior resistance to high-RPM harmonics compared to stock sintered gears
• Direct replacement for factory internals
• Manufacturer Part Number: RB26-81-OPG

Fits Nissan 2.5L QR and DE series engines. The Boundary Billet Crankshaft Timing Sprocket (MPN: QR25DE-SP) is a precision-engineered upgrade designed to replace the vulnerable factory sprocket. While OE components are typically made from powdered or cast metal, this Boundary unit is CNC-machined from high-strength billet steel to provide the durability required for high-RPM and performance engine builds.

• CNC-machined from premium billet steel for maximum strength
• Direct replacement for the factory crankshaft timing sprocket
• Ensures timing accuracy and prevents catastrophic sprocket failure
• Ideal for high-performance and racing applications
• Manufacturer Part Number: QR25DE-SP

Fits 2007-2014 Ford Mustang GT500 (V8-5.4L / V8-5.8L).

Protect your engine from catastrophic timing failure with the Boundary Billet Crankshaft Timing Sprocket. In high-performance Ford Modular V8 builds, the factory-installed sintered metal sprocket is a notorious weak point, prone to shattering under high-RPM harmonics or the increased loads of aftermarket superchargers. Boundary addresses this vulnerability by replacing the fragile OE component with a precision-engineered billet steel gear.

• CNC-machined from high-strength billet steel for maximum fatigue resistance.
• Designed to withstand the extreme vibrational loads of high-horsepower forced induction builds.
• Direct-fit replacement for the factory crankshaft timing gear to maintain precise valvetrain alignment.
• Heat-treated for increased surface hardness and wear resistance.
• Manufacturer Part Number: MM-SP-GT500

Fits select 1999-2015 Ford Modular V8 engines (including 4.6L, 5.4L, and 5.0L Coyote).

The Boundary Oil Pump Assembly (MPN: MM-S1-BBP) is a critical upgrade for high-performance Ford Modular engines. While factory oil pump housings are prone to flexing under high-RPM stress, this assembly features a precision-machined billet steel backplate. This added rigidity eliminates plate deflection, ensuring consistent oil pressure and preventing internal bypass that can lead to catastrophic engine failure during track use or high-load conditions.

• Billet steel backplate replaces the flexible factory cast component for superior rigidity
• Ensures stable oil pressure by maintaining tight internal clearances at high RPM
• Precision-ground surfaces for optimal volumetric efficiency and sealing
• Direct-fit replacement for 1999-2015 Ford Modular V8 oil pump assemblies
• Manufacturer Part Number: MM-S1-BBP