Fits select 2003-2020 Ford, Mazda, Lincoln, Jaguar, and Mercury vehicles including Focus, Fusion, Mazda 3, and CX-7 (MZR, L3-VDT, and Duratec engines).

The King XP-Series High Performance Main Bearing Set is engineered for high-load applications where factory-grade bearings reach their limits. This set is specifically designed for high-output environments, making it a critical upgrade for turbocharged and performance-oriented builds such as the Mazdaspeed L3-VDT and Ford Duratec platforms. By maintaining tight tolerances and providing superior load-carrying capacity, these bearings ensure the crankshaft remains stable and properly lubricated under extreme stress.

• Manufacturer Part Number: MB5442XPSTDX
• Series: XP High Performance
• Bearing Size: STDX (Standard)
• Engine Context: MZR DISI, L3-VDT Turbo, and Duratec 2.0L/2.3L/2.5L
• Optimized for high-RPM and high-load racing applications
• Precision manufactured for consistent oil clearances

Fits select 2003-2020 Ford, Mazda, Lincoln, Jaguar, and Mercury vehicles equipped with L3-VDT, MZR, and Duratec engines.

The King High Performance Main Bearing Set is engineered to meet the extreme demands of high-output engines. This specific set is oversized by +0.25mm, making it the ideal solution for engine rebuilds where the crankshaft has been professionally reground to restore journal geometry. Part of King's high-performance line, these bearings provide superior load-carrying capacity and durability under high-RPM conditions.

• Oversize Spec: +0.25mm for reground journals
• Engine Compatibility: L3-VDT, MZR DISI (Turbo), and Duratec architectures
• Construction: High-performance materials designed for increased durability and heat resistance
• Manufacturer Part Number: MB5442XP0.25

Whether you are refreshing a Mazdaspeed 3 L3-VDT or building a performance-oriented Duratec engine for a Ford Focus or Fusion, these bearings offer the precise clearances and material strength required to protect your rotating assembly.

Fits select 2003-2020 Ford, Mazda, Lincoln, Jaguar, and Mercury vehicles (2.3L).

This King Engine Bearings main bearing set is engineered for precision and durability during engine assembly or rebuilds. Designed specifically for the 2.3L engine architecture, these bearings provide the essential oil clearance and load-carrying capacity required for stable crankshaft rotation. These components are manufactured to strict tolerances to ensure a reliable interface between the crankshaft journals and the engine block.

• Manufacturer Part Number: MB5442XP.026
• Part Type: Crankshaft Main Bearing Set
• Quantity: Set of 5 bearings
• Engine Compatibility: 2.3L / 2.0L EcoBoost
• Application: Replaces factory main bearings for improved journal support

This King Main Bearing Set (Size: STD) is designed for select 2003-2020 Ford, Mazda, Jaguar, Lincoln, and Mercury vehicles equipped with 2.0L or 2.3L DOHC engines. As part of the King SI-series, these bearings are engineered to provide a reliable, high-durability solution for OE-style engine rebuilds and daily driving applications.

Constructed from a silicon-impregnated aluminum bi-metal alloy, these bearings offer superior embeddability and seizure resistance compared to traditional aluminum bearings. The addition of silicon helps to maintain the bearing surface, especially when paired with modern crankshaft materials. This set replaces worn factory main bearings to restore proper oil clearance and support the rotating assembly.

• Manufacturer Part Number: MB5442SI
• Material: Silicon Bi-Metal Aluminum Alloy
• Size: Standard (STD)
• Engine Compatibility: Duratec 2.0L / 2.3L DOHC
• Design: High-precision tolerances for consistent oil pressure
• Package Includes: Full set of main bearings for one engine

This King High Performance Main Bearing Set is engineered for precise crankshaft support and reliable oil clearance in high-demand engine environments. Specifically designed for the MZR, L3-VDT, and Duratec architectures, these standard (STD) size bearings provide the durability required for both street performance and competitive builds.

Fits select 2003-2020 Ford, Mazda, Lincoln, Jaguar, and Mercury models including Focus, Fusion, Mazdaspeed 3/6, CX-7, and MKZ.

• Manufacturer Part Number: MB5442MC
• Bearing Size: STD (Standard)
• Optimized for L3-VDT MZR DISI and Duratec engine platforms
• High performance construction designed to handle increased load and RPM
• Ensures consistent oil film thickness across all main journals

Fits select 2000-2012 Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Saab, and Saturn models with 2.0T and related Ecotec-family engines (LNF, LSJ, L42, 61, Z22SE).

Ensure your bottom end is secured with this King Engine Bearings crankshaft main bearing set. Designed for precision and durability, these bearings are engineered to meet or exceed OE specifications, providing the reliable oil film clearance required for high-stress engine environments. Whether you are performing a standard rebuild on a Chevrolet Cobalt SS or refreshing a Saab 9-3, these bearings offer the consistent tolerances necessary for long-term crankshaft health and engine longevity.

• Manufacturer Part Number: MB5413CP
• Quantity: Full set of 5 main bearings
• Engine Compatibility: LNF, LSJ, L42, 61, Z22SE (2.0T)
• Precision-manufactured to ensure proper oil clearance and reduced friction
• High-strength construction to withstand internal combustion pressures

Fits select 1990-2019 Subaru and Saab vehicles equipped with EJ20, EJ22, and EJ25 engines, including turbocharged variants.

The King pMaxKote Performance Main Bearing Set is engineered for high-performance builds where precision and engine longevity are critical. These bearings feature King's pMaxKote, a factory-applied nano-composite coating that reduces friction and provides an essential layer of protection against oil starvation or metal-to-metal contact during cold starts and high-load conditions. Built specifically for the unique demands of the Subaru flat-four crankshaft, this set provides the durability required for both aggressive street driving and track applications.

• Manufacturer Part Number: MB5382XPGC.026
• Bearing Size: +.026mm Oversize
• Series: XP Performance with pMaxKote Coating
• Material: High-strength tri-metal with nano-composite top layer
• Engine Fitment: Subaru EJ20, EJ22, and EJ25 (including Turbo and STI models)
• Design: Optimized oiling holes for consistent lubrication at high RPMs

Fits select 1990-2019 Subaru and Saab models (EJ20 / EJ22 / EJ25) as listed below.

This King XPG-series tri-metal performance main bearing set is engineered for high-load engine builds where precision and durability are critical. Designed for engines with the thrust bearing in the #5 position, these bearings feature the hardened Tri-Metal construction necessary to withstand high-RPM stress and increased combustion pressures. This specific set is sized at +0.26mm to accommodate oversized journals.

• Manufacturer Part Number: MB5382XPG.026
• Bearing Series: XPG Tri-Metal Performance
• Size: +0.26mm (Oversize)
• Thrust Position: #5 Main
• Engine Compatibility: Subaru EJ20, EJ22, and EJ25
• Fits: Select 1990-2019 Subaru (Baja, Forester, Impreza, WRX, STI, Legacy, Outback) and 2005-2006 Saab 9-2X

Fits select 1990-2019 Subaru Legacy, Impreza, Forester, Outback, Baja, and 2005-2006 Saab 9-2X (EJ20 / EJ22 / EJ25).

The King Performance Main Bearing Set is engineered for high-load EJ-series engine builds requiring the thrust bearing in the #5 journal position. Designed for performance applications, these bearings provide the durability and precision tolerances necessary for both high-RPM street use and track environments. This set replaces worn factory main bearings and is critical for maintaining proper oil clearance and crankshaft stability.

• Engine Compatibility: Subaru EJ20, EJ22, and EJ25 blocks
• Thrust Location: Designed specifically for #5 position thrust bearing blocks
• Bearing Size: Standard (STD)
• Material: Performance-grade tri-metal construction
• Manufacturer Part Number: MB5382XPG

Precision-manufactured to ensure consistent oil film thickness, this bearing set is a staple for WRX, STI, and Forester XT engine overhauls where the block configuration utilizes the rear (#5) thrust journal.

Fits select 1990-2019 Subaru and Saab models equipped with EJ20, EJ22, and EJ25 engines, including turbocharged variants.

This King Engine Bearings Main Bearing Set is a professional-grade solution for engine builders and technicians performing bottom-end service on Subaru EJ-series blocks. Sized at +0.25mm, these bearings are specifically engineered for crankshafts where the main journals have been ground or machined to an undersize to remove scoring or restore concentricity. By utilizing these oversize bearings, you restore the precise oil clearances required for long-term reliability and stable oil pressure under load.

• Fits EJ20, EJ22, and EJ25 engine platforms (Including Turbo)
• Designed for crankshaft journals machined to a +0.25mm undersize
• Optimized oil clearance to ensure proper lubrication and cooling
• Durable SI-series construction for high-load resistance and fatigue strength
• Direct replacement for worn OE main bearings during a professional rebuild
• Manufacturer Part Number: MB5382SI0.25

Fits select 1990-2019 Subaru Impreza, WRX, STI, Legacy, Outback, Forester, Baja, and Saab 9-2X (EJ20 / EJ22 / EJ25).

King Engine Bearings SI-Series main bearings are engineered for street and performance applications where longevity and load capacity are critical. Constructed from a high-quality silicon-aluminum alloy, these bearings provide superior wear resistance compared to standard replacements. This set ensures proper crankshaft support and maintains consistent oil clearance for the flat-four EJ-series engine block, whether you are performing a standard rebuild or a moderate performance upgrade.

• Series: SI-Series Silicon-Aluminum
• Fitment: Subaru EJ20, EJ22, and EJ25 engines (N/A and Turbo)
• Included: Set of 5 main bearings
• Manufacturer Part Number: MB5382SI

Fits select 1998-2011 Chevrolet Prizm, Lotus Elise/Exige, Pontiac Vibe, and Toyota Celica, Corolla, and Matrix (2ZZGE engine series).

The King Engine Bearings MB5375AM crankshaft main bearing set is engineered to restore internal engine tolerances and ensure reliable bottom-end operation. Designed to meet or exceed original equipment specifications, these bearings provide the precise oil clearances necessary for the high-revving characteristics of the 2ZZGE platform. By utilizing advanced metallurgy, these bearings offer superior fatigue resistance and embeddability to protect the crankshaft journals from debris and wear.

• Manufacturer Part Number: MB5375AM
• Engineered for precise oil film retention and reduced friction
• Constructed to handle the thermal loads of high-performance and daily-driven engines
• Direct replacement for worn factory main bearings
• Complete set for a full engine rebuild

This King Engine Bearings Main Bearing Set (MPN: MB5304XPSTDX) is engineered for select 1986-2005 Mazda, Ford, Kia, and Mercury vehicles equipped with B6, B6-T, ZM, B3, and B5 engines. Designed for precision engine building, this STDX (Standard Extra Clearance) set provides the necessary oil clearance for high-performance applications where standard tolerances are insufficient, ensuring reliable lubrication under high-load conditions.

• Manufacturer Part Number: MB5304XPSTDX
• Bearing Size: STDX (Standard Extra Clearance)
• Engine Compatibility: Mazda B6, B6-T, ZM, B3, B5
• Series: XP-Series high-performance tri-metal

Fits the following vehicles:

Fits select 1986-2005 Mazda, Ford, Kia, and Mercury models including Miata, Protege, 323, Escort, Capri, and Rio (B3 / B5 / B6 / B6-T / ZM).

Ensure your engine rebuild meets exact tolerances with the King Engine Bearings MB5304XP0.25 main bearing set. This +0.25mm oversize set is designed for crankshafts that have been ground to a specific undersize, providing the necessary oil clearance and structural support for both high-performance and daily-driven applications. King's XP-series bearings are engineered with a tri-metal construction to handle higher loads and provide superior fatigue resistance.

• Manufacturer Part Number: MB5304XP0.25
• Bearing Size: +0.25mm Oversize
• Engine Compatibility: Mazda B6, B6-T, ZM, B3, B5
• Construction: High-load tri-metal bearing material
• Application: Crankshaft main journal replacement set

Fits select 1986-2005 Mazda 323, Miata, and Protege; Ford Escort; Mercury Capri and Tracer; and Kia Rio (B3, B5, B6, B6-T, and ZM engines).

This King Engine Bearings XP-Series main bearing set is engineered for high-performance engine rebuilds where precision clearances and high load capacity are required. Designed to accommodate crankshafts that have been ground to a +.025mm oversize, these bearings feature King's advanced tri-metal construction to withstand the increased cylinder pressures found in forced induction or high-RPM applications.

• Specifically designed for Mazda B-series engine architectures (B3, B5, B6, B6-T, and ZM).
• XP-Series tri-metal construction for superior fatigue strength and load-carrying capacity.
• Ideal for street-performance and dedicated racing builds.
• Ensures proper crankshaft support and oil film maintenance.

• Manufacturer Part Number: MB5304XP.026
• Oversize: +.025mm
• Material: Tri-metal (XP-Series)
• Bearing Type: Main Bearing Set

This King Main Bearing Set is designed for precision crankshaft support and optimal oil clearance in high-performance and daily-driven GM LS-series engines. Engineered as a standard (STD) size replacement, these bearings are essential for maintaining engine longevity and internal stability during a rebuild.

• Fits select 1997-2020 GM vehicles (Chevrolet, GMC, Cadillac, Hummer, Buick, Isuzu, and Avanti) with 4.8L, 5.3L, 5.7L, and 6.0L engines.
• Compatible with engine codes L20, LS1, LS2, LS4, and LS6.
• Precision manufactured for the 294/325/345/364 CI block platforms.
• Manufacturer Part Number: MB5293SI
• Bearing Size: Standard (STD)

Each set is built to exacting tolerances to ensure a perfect fit in factory or aftermarket housings, replacing worn OE bushings to restore engine performance.