Restore your engine's rotating assembly with this ACL Standard Size Main Bearing Set. Specifically designed for select Toyota 4-cylinder engines produced between 1987 and 1994, this set provides crucial support for the crankshaft within your engine block.

Engineered to maintain the precise oil film required for low-friction rotation, these standard-size bearings are ideal for engine rebuilds where the crankshaft journals are within factory specifications and have not been ground. ACL's commitment to precision manufacturing ensures accurate clearances and proper bearing crush, vital for long-term engine health.

• Provides vital support for the crankshaft
• Engineered for precise oil film maintenance
• Standard size for unmachined crankshafts
• Designed for select Toyota 4-cylinder models (1987-1994)
• Manufacturer Part Number: 5M8382A-STD

Fits select 1983-2001 Toyota Camry, Celica, MR2, RAV4, and Solara.

Engineered for high-stress applications, the ACL High Performance Main Bearing Set provides the durability required for performance-built Toyota engines. Designed to meet the demands of high-RPM operation and increased load, these bearings are a critical upgrade for 3S-GTE and 5S-FE bottom-end builds. The ACL Race series design features a combination of strength and seize resistance, ensuring reliable oil film maintenance under extreme conditions.

• Part Number: 5M8361H-STD
• Sizing: Standard (STD) for crankshafts within factory specifications.
• High-Strength Construction: Designed with increased crush for improved bearing retention and heat transfer.
• Application Specific: Replaces factory main bearings to provide superior fatigue strength compared to standard OE components.
• Durability: Built to withstand the rigors of turbocharged and naturally aspirated performance configurations.

This set includes a complete set of main bearings for one engine assembly.

Engineered for high-stress applications, this ACL High Performance Main Bearing Set provides the precise tolerances and durability required for performance engine builds. This specific set features a 0.25mm (.010") undersize, designed for use with crankshafts that have been ground to restore journal surface integrity. Fits select 1983-2001 Toyota Camry, Celica, MR2, RAV4, and Solara models.

Constructed with ACL's proven tri-metal design, these bearings offer superior fatigue strength and embeddability compared to standard OEM babbitt bearings. They are essential for maintaining correct oil clearance and providing reliable support for the crankshaft under high RPM and heavy load conditions.

• Manufacturer Part Number: 5M8361H-.25
• Bearing Size: 0.25mm Oversized (.010" Undersize)
• Series: High Performance Race Series
• Compatibility: Toyota S-Series Engines (3S-GTE, 5S-FE, etc.)
• Material: High-strength tri-metal lead-tin-copper bond

Fits select 1986-2005 Kia Rio/Sephia, Mazda 323/Miata/MX-3/Protege, and Mercury Capri (B6/BP/BP-T engines).

Engineered for high-RPM racing and performance builds, the ACL Race Series Main Bearing Set provides the durability and precise tolerances required for increased loads. This specific set (MPN: 5M8353HX-STD) features the HX profile, which provides extra oil clearance compared to standard race bearings to support high-flow oiling systems and high-stress applications.

• Manufacturer Part Number: 5M8353HX-STD
• Series: Race Series
• Bore Size: Standard (STD)
• Oil Clearance: HX (Extra Oil Clearance)
• Compatible Engines: Mazda B6, BP, and BP-T 4-cylinder
• Construction: Tri-metal hardened lead, tin, and copper for superior fatigue strength

ACL Race Series bearings are designed with a high-strength overlay and reduced thickness to improve heat transfer and maintain structural integrity during extreme thermal cycles. This 5-bearing set is a direct replacement for factory main bearings when building or refreshing a high-performance engine.

Fits select 1986-2005 Mazda, Kia, and Mercury models, including Miata, Protege, 323, Rio, and Capri (1.8L).

The ACL Race Series High Performance Main Bearing Set is engineered for high-RPM engines and demanding performance applications. This standard-size bearing set (5M8353H-STD) is designed to handle the increased loads and temperatures found in modified B6, BP, and BP-T engines. Featuring a unique combination of design, metallurgy, and engineering, these bearings provide the durability required by professional engine builders for street, track, and drag racing environments.

• Manufacturer Part Number: 5M8353H-STD
• Series: Race Series / High Performance (H-Series)
• Size: Standard (STD)
• Engine Compatibility: Mazda B6/BP/BP-T (1.8L)
• Construction: High-strength tri-metal for superior fatigue resistance

This set is a direct replacement for the factory main bearings, providing precise oil clearance and improved crush for maximum retention in the block.

Fits select 1986-2005 Mazda, Kia, and Mercury vehicles including the Miata, Protege, 323, and Rio (1.8L).

This ACL Race Series main bearing set is engineered for high-performance applications where increased engine loads and high-RPM operation are the standard. Designed to replace worn factory bearings during a complete engine rebuild, these .50mm oversized bearings provide the durability required for forced induction or high-compression builds. Please note that oversized bearings require the crankshaft journals to be machined to the specific undersize to ensure proper oil clearance and fitment.

• Manufacturer Part Number: 5M8353H-.50
• Bearing Size: .50mm Oversized
• Series: Race Series
• Quantity: Complete set of 5 main bearings
• High-strength tri-metal construction for superior fatigue resistance

Fits select 1986-2005 Mazda, Kia, and Mercury models including Miata, 323, Protege, Rio, and Capri (1.6L / 1.8L).

The ACL High Performance Main Bearing Set is engineered for engine builders and enthusiasts requiring high-strength components for performance rebuilds. This .25mm oversized set is specifically designed for Mazda B-series engines (B6, BP, BP-T) where the crankshaft journals have been machined or ground. These bearings provide the consistent oil clearance and increased load-carrying capacity necessary for high-RPM environments and forced induction applications.

• Manufacturer Part Number: 5M8353H-.25
• Size: .25mm Oversized
• Engine Compatibility: Mazda 1.6L and 1.8L (B6/BP/BP-T)
• Material: High-performance tri-metal construction for enhanced durability
• Application: Direct replacement for OE main bearings when crankshaft journals are undersized

Fits select 1986-2005 Mazda 323, Miata, Protege, MX-3; Kia Rio and Sephia; and Mercury Capri (1.8L).

Engineered for high-performance and racing applications, this ACL Race Series main bearing set provides the increased durability required for high-RPM 1.8L B-series engines. These bearings feature a specialized trimetal construction (copper, lead, and tin) that offers superior fatigue strength and heat dissipation compared to standard OE components.

The .025mm oversized design is specifically intended for engines with precisely machined crankshaft journals or where custom oil clearances are required. This set replaces the factory main bearings to ensure maximum bottom-end stability and longevity under extreme operating conditions.

• Manufacturer Part Number: 5M8353H-.025
• Engine Compatibility: B6, BP, BP-T (1.8L)
• Size: .025mm Oversized
• Construction: High-strength trimetal
• Quantity: Full main bearing set

Fits select 2012-2025 Subaru (Impreza, Forester, Legacy, Outback, BRZ, Crosstrek), Scion FR-S, and Toyota 86/GR86.

Engineered for high-performance builds and high-load environments, this ACL High Performance Main Bearing Set provides the precision and durability required for Subaru FA and FB series engines. This specific set is designated as Standard Size with Extra Oil Clearance (HX), offering the additional clearance necessary for thicker oil films or specialized oiling requirements in modified engines.

• Manufacturer Part Number: 5M8312HX-STD
• Bearing Size: Standard (STD)
• Clearance Spec: HX (Extra Oil Clearance)
• Application: Direct replacement for factory main bearings in high-performance applications

Whether you are rebuilding for the track or refreshing a daily driver, these bearings ensure consistent crank support and oil pressure management across the full RPM range.

Fits select 2012-2025 Subaru, Toyota, and Scion vehicles including BRZ, GR86, FR-S, Impreza, Forester, Legacy, and Outback.

This ACL Main Bearing Set (MPN 5M8312HO/S2-STD) is engineered for engine builds where the block has been line-bored or the main housing bores have been machined larger than factory specifications. While maintaining a standard journal size, these bearings feature a +.002in (.050mm) Oversize Outside Diameter (OD) to ensure a proper press fit and secure seating in modified engine blocks.

• Manufacturer Part Number: 5M8312HO/S2-STD
• Bearing Size: Standard (STD)
• Outside Diameter: +.002in (.050mm) Oversize
• High-Performance Engineering: Designed to maintain consistent oil film and thermal conductivity under high loads.
• Compatibility: Replaces OE main bearings in blocks requiring line-bore correction.

Verified Vehicle Fitment:

• 2013-2016 Scion FR-S Base
• 2022-2025 Subaru BRZ (Limited, Premium, TS)
• 2012-2016 Subaru Impreza
• 2013-2019 Subaru Legacy (2.5i models)
• 2013-2019 Subaru Outback (2.5i models)
• 2014-2018 Subaru Forester (2.5i models)
• 2013-2017 Subaru Crosstrek / XV Crosstrek
• 2017-2020 Toyota 86
• 2022-2024 Toyota GR86

Fits select 2012-2025 Subaru (BRZ, Forester, Impreza, Legacy, Outback, Crosstrek), Scion FR-S, and Toyota (86, GR86) models.

The ACL High Performance Main Bearing Set is engineered for high-stress environments where precision and durability are non-negotiable. This 0.25mm (.010") oversized set is specifically intended for engine rebuilds where the crankshaft main journals have been machined or ground to restore a smooth, round bearing surface. Built using high-strength trimetal materials, these bearings offer superior fatigue resistance and load-carrying capacity compared to standard OE components, making them ideal for both performance street and track applications.

• Manufacturer Part Number: 5M8312H-.25
• Bearing Size: 0.25mm Oversize
• Material: High-performance trimetal construction for enhanced durability
• Compatibility: Engineered for Subaru FA20 and select FB-series engine platforms
• Application: Essential for maintaining oil pressure and rotational stability after crankshaft machining

Fits select 2012-2025 Subaru (BRZ, Impreza, Forester, Legacy, Outback, Crosstrek, XV Crosstrek), Toyota (86, GR86), and Scion (FR-S) models.

Engineered for precision and reliability, this ACL High Performance Main Bearing set provides the essential foundation for engine rebuilds on FA and FB-series powerplants. These 0.025mm oversized bearings are designed for applications where the crankshaft journals require specific clearance adjustments beyond standard sizing. Built to withstand higher loads and RPMs than standard components, they ensure consistent oil film thickness and durability in high-stress performance environments.

• Manufacturer Part Number: 5M8312H-.025
• Bearing Type: Main Bearing Set
• Oversize: 0.025mm
• Compatibility: Specifically tailored for Subaru FA20 and select FB engine architectures
• Engineered to maintain strict tolerances for high-performance engine builds

Fits select 1991-2005 Subaru Forester, Impreza, Legacy, Outback, and Saab 9-2X (EJ20 / EJ22 / EJ25) with the thrust bearing in the #5 position.

Engineered for high-stress racing and performance applications, this ACL High Performance main bearing set provides the precision and durability required for Subaru EJ-series engines. These bearings are designed specifically for blocks utilizing the #5 thrust position and feature an additional .002mm oversize (OS) specification along with extra oil clearance to ensure optimal lubrication under high-load conditions. The specialized metallurgy and tri-metal construction provide superior fatigue strength and load-bearing capacity compared to standard replacement bearings.

• Manufacturer Part Number: 5M8309HXOS2-STD
• Engine Fitment: EJ20, EJ22, EJ25
• Thrust Position: #5
• Oversize: .002mm OS
• Features: Extra Oil Clearance for high-RPM lubrication
• Application: High Performance / Race Series

These ACL high-performance main bearings are engineered for Subaru EJ20, EJ22, and EJ25 engines, specifically designed with the thrust bearing in the #5 position. Precision-machined, they provide critical support and lubrication for the crankshaft, ensuring smooth rotation and durability under demanding conditions.

This specific set features a .005mm oversize bore, accommodating crankshafts that have been reground or block tunnels that require a slightly larger bearing. The extra oil clearance design promotes enhanced oil flow and improved lubrication, which is beneficial for high-performance engine builds and sustained high RPM operation.

• Application: Subaru EJ20, EJ22, EJ25 engines
• Thrust Bearing Location: Main #5 Position
• Size: .005mm Oversize
• Feature: Extra Oil Clearance
• Manufacturer Part Number: 5M8309HXO/S5-STD

Fits select 1991-2005 Subaru Impreza, Legacy, Forester, and Saab 9-2X models (EJ20 / EJ22 / EJ25). This ACL High Performance main bearing set is specifically engineered for engine blocks where the thrust bearing is located in the #5 position. These bearings are designed to meet the rigorous demands of high-RPM racing and performance builds.

Featuring the advanced CT-1 dry film lubricant coating, these bearings provide a low-friction surface that reduces heat and protects against galling during cold starts and high-load conditions. This specific "XC" version provides extra oil clearance to ensure optimal oil flow and film thickness in precision-built engines. The tri-metal construction offers superior fatigue strength and load-bearing capacity compared to factory alternatives.

• Manufacturer Part Number: 5M8309HXC-STD
• Engine Fitment: Subaru EJ20, EJ22, EJ25
• Thrust Bearing Position: #5
• Size: Standard (STD) with Extra Oil Clearance
• Finish: CT-1 Dry Film Lubricant Coating
• Material: High-strength tri-metal

Fits select 1991-2005 Subaru Impreza, Forester, Legacy, Outback, and Saab 9-2X models (EJ20 / EJ22 / EJ25).

This ACL Race Series main bearing set is engineered for high-performance Subaru engine builds that require additional oil clearance. Specifically designed for engine blocks with the thrust bearing in the #5 position, these bearings feature the "HX" extra oil clearance specification to ensure proper lubrication under high-load and high-RPM conditions. The tri-metal construction provides the durability and embeddability necessary for modified street and track applications.

• Manufacturer Part Number: 5M8309HX-STD
• Bearing Size: Standard (STD)
• Oil Clearance: HX (Extra Oil Clearance)
• Thrust Position: #5 Position
• Compatibility: Subaru EJ20, EJ22, and EJ25 engines
• Application: High-performance and racing builds

Fits select 1991-2005 Subaru Forester, Impreza, Legacy, Outback, and Saab 9-2X models equipped with EJ20, EJ22, or EJ25 engines.

Engineered for high-performance builds, these ACL Race Series main bearings are designed to withstand the increased loads and RPMs of modified EJ-series engines. This specific set is configured for engine blocks where the thrust bearing is located in the #5 position. These bearings feature a 0.005mm (.0002") oversized clearance, allowing engine builders to achieve precise oil film thickness for improved lubrication and cooling in demanding environments.

• Manufacturer Part Number: 5M8309HOS5-STD
• Fitment: Thrust in #5 Position
• Engine Series: Subaru EJ20, EJ22, EJ25
• Oil Clearance: 0.005mm Oversized (.0002")
• Construction: Tri-metal high-performance material for superior fatigue strength

Fits select 1991-2005 Subaru Forester, Impreza, Legacy, Outback, and Saab 9-2X models equipped with EJ20, EJ22, and EJ25 engines.

This ACL High Performance Main Bearing set is engineered for high-output engine builds that require precision oil clearance management. Specifically designed for Subaru EJ-series blocks where the thrust bearing is located in the #5 position, these 0.030mm oversized bearings provide the tight tolerances and material strength necessary for high-RPM and high-load environments. The tri-metal construction ensures superior embeddability and load-carrying capacity compared to standard OE-style bearings.

• Manufacturer Part Number: 5M8309HOS5-.025
• 0.030mm Oversized for precision crankshaft clearance adjustment
• Designed specifically for #5 position thrust engine configurations
• High-strength tri-metal material for enhanced durability
• Compatible with EJ20, EJ22, and EJ25 engine variants

Fits select 1991-2005 Subaru Legacy, Impreza, Forester, Outback, and Saab 9-2X (EJ20 / EJ22 / EJ25 engines).

Engineered for high-performance builds, these ACL Race Series main bearings provide the precision and durability required for Subaru's EJ-series horizontally opposed engines. This specific set is designed for engine blocks that utilize the thrust bearing in the #5 position, ensuring proper crank end-play control and oiling efficiency under high-load conditions.

The 0.002mm oversized specification allows for precise oil clearance adjustments during assembly, making them an essential choice for professional engine builders seeking to optimize tolerances beyond standard off-the-shelf components. Featuring a high-strength tri-metal construction, these bearings offer superior fatigue resistance and load-carrying capacity for turbocharged or high-RPM applications.

• Manufacturer Part Number: 5M8309HOS2-STD
• Application: For engine blocks with Thrust in #5 Position
• Size: 0.002mm Oversized
• Series: ACL Race Series High Performance
• Compatibility: Subaru EJ20, EJ22, and EJ25 engines

Fits select 1991-2005 Subaru Forester, Impreza, Legacy, Outback, and Saab 9-2X (EJ20 / EJ22 / EJ25). This ACL High Performance main bearing set is engineered for high-load engine builds where the thrust bearing is located in the #5 position. These bearings utilize a tri-metal construction to provide the fatigue resistance and load-carrying capacity required for performance applications.

The 0.027mm oversized dimension is specifically intended for crankshafts that have been precision ground to undersize, ensuring proper oil clearances and rotational stability. By replacing worn factory components with ACL's race-proven materials, you ensure your EJ-series rotating assembly is supported during high-RPM operation.

• Manufacturer Part Number: 5M8309HOS2-.025
• Thrust Position: #5 Journal
• Size: 0.027mm Oversized
• Engine Compatibility: Subaru EJ20, EJ22, and EJ25
• Material: High-strength tri-metal lead-tin-copper bake

Fits select 1991-2005 Subaru Impreza, Legacy, Forester, Outback, and Saab 9-2X models equipped with EJ20, EJ22, or EJ25 engines. This ACL High Performance main bearing is engineered for engine blocks that utilize the thrust bearing in the #5 journal position.

Designed for precision engine building, this 0.50mm oversized bearing is utilized when the crankshaft journals have been ground to a specific undersize. ACL High Performance bearings feature a tri-metal construction designed to withstand higher RPMs and increased load capacities found in turbocharged or high-output naturally aspirated EJ-series builds. Each bearing is manufactured to exacting tolerances to ensure consistent oil clearance and reliable lubrication across the main journals.

• Manufacturer Part Number: 5M8309H-.50
• Bearing Type: Main Bearing (Thrust in #5 Position)
• Size: 0.50mm Oversize
• Construction: Tri-metal high-performance alloy
• Engine Compatibility: Subaru EJ20, EJ22, and EJ25

Fits select 1991-2005 Subaru (Forester, Impreza, Legacy, Outback) and Saab 9-2X (EJ20 / EJ22 / EJ25 engines).

Designed for high-performance builds and engine restorations, this ACL Race Series main bearing set features a 0.25mm oversize to accommodate crankshafts that have been ground or polished. Engineered specifically for Subaru EJ-series engine blocks where the thrust bearing is located in the #5 position, these bearings provide the durability and precision tolerances required for high-RPM and high-load applications.

• Manufacturer Part Number: 5M8309H-.25
• Undersize/Oversize: 0.25mm (.010")
• Thrust Location: #5 Position
• Engine Compatibility: Subaru EJ20, EJ22, and EJ25
• Construction: High-strength tri-metal design for superior load-carrying capacity

Whether you are rebuilding a street-tuned WRX or a naturally aspirated EJ22, these ACL bearings ensure consistent oil film clearance and reduced friction for long-term reliability.

Fits select 1991-2005 Subaru Legacy, Impreza, Forester, Outback, and Saab 9-2X models (EJ20 / EJ22 / EJ25 engines).

This ACL high-performance main bearing set is engineered for precise engine rebuilding where a 0.025mm oversize is required. Specifically designed for blocks utilizing the thrust bearing in the #5 position, these bearings provide the increased durability and tight tolerances necessary for high-load performance applications. They are an essential upgrade for EJ-series builds where factory clearances need to be maintained or adjusted for performance crankshafts.

• Manufacturer Part Number: 5M8309H-.025
• Bearing Size: 0.025mm Oversize
• Thrust Bearing Location: #5 Position
• Engine Compatibility: Subaru EJ20, EJ22, and EJ25
• Engineered for high-performance and racing environments

Fits 1998 Subaru Forester (EJ20 / EJ22 / EJ25 engines).

This ACL main bearing set is engineered to provide the precise oil clearances and high-load capacity required for a reliable engine rebuild. Designed specifically for Subaru EJ-series engines where the thrust flange is located at the #5 main journal position, these bearings ensure proper crankshaft support and axial movement control during operation. By maintaining consistent oil film thickness, these bearings prevent premature wear on the crankshaft journals.

• Manufacturer Part Number: 5M8309A-STD
• Size: Standard (STD)
• Configuration: Thrust flange in #5 position
• Engine Compatibility: Subaru EJ20, EJ22, and EJ25
• Application: Replaces worn OE main bearings to restore factory tolerances

Fits select 1991-2005 Subaru Impreza, Legacy, Forester, and Outback, and 2005 Saab 9-2X Aero (EJ20 / EJ22 / EJ25).

Engineered for high-output applications, this ACL High Performance Main Bearing Set provides the durability and precision required for performance Subaru EJ-series builds. This specific set is designed for engine blocks that utilize a thrust bearing in the #3 journal position rather than the rear position. Utilizing a tri-metal hardened lead, tin, and copper bonding, these bearings offer superior fatigue strength and load-carrying capacity compared to standard OE components, making them ideal for turbocharged or high-revving EJ20, EJ22, and EJ25 builds.

• Manufacturer Part Number: 5M8297H-STD
• Bearing Size: Standard (STD)
• Thrust Location: #3 Position
• Engine Compatibility: EJ20, EJ22, EJ25
• Increased eccentricity for improved oil film formation at high RPM
• Large crush for better bearing retention and heat transfer

This kit includes a complete set of main bearings for one engine assembly. Professional measurement of crank journals and housing bores is recommended to ensure the Standard (STD) size provides the necessary oil clearances for your specific build.

Fits 1998 Subaru Forester Base, L, and S models.

The ACL Main Bearing Set (MPN: 5M8297A-STD) is engineered to provide precise oil clearances and exceptional durability for Subaru EJ-series engines. This standard size (STD) set is specifically configured for engine blocks that utilize the center #3 journal as the thrust position. Built to withstand high-load applications and thermal stress, these bearings are essential for maintaining crankshaft alignment and oil pressure stability during a professional engine rebuild.

• Specifically for EJ18, EJ20, EJ22, and EJ25 engines with #3 thrust configuration
• Size: Standard (STD)
• Designed for consistent oil film retention and thermal dissipation
• Engineered to meet or exceed OE tolerances for reliability
• Manufacturer Part Number: 5M8297A-STD

Fits select 1990-2009 Lexus and Toyota models including GS400, LS400, SC400, 4Runner, and Tundra (V8-4.0L).

ACL Race Series main bearings are engineered for high-performance applications where standard OE components may not withstand the increased loads of high-RPM or forced induction environments. These bearings utilize a sophisticated tri-metal design to provide the fatigue resistance and strength required for precision engine builds. This standard-size set ensures critical oil clearances are maintained for the 1UZ-FE and related V8 platforms, offering a significant upgrade for track-focused or high-power street engines.

• Manufacturer Part Number: 5M8088H-STD
• Bearing Type: Main Bearing Set
• Size: Standard (STD)
• Construction: Hardened lead-tin-copper tri-metal bonding for superior load capacity
• Engineering: Increased crush for improved bearing retention and heat dissipation
• Design: Large chamfers to accommodate large crankshaft fillets

Vehicle Fitment:

• 1998-2000 Lexus GS400 Base
• 2003-2009 Lexus GX470 Base
• 1990-2000 Lexus LS400 Base
• 1998-2007 Lexus LX470 Base
• 1992-2000 Lexus SC400 Base
• 2003-2009 Toyota 4Runner (Limited, Sport, SR5)
• 1998-2007 Toyota Land Cruiser Base
• 2001-2009 Toyota Sequoia (Limited, SR5)
• 2000-2009 Toyota Tundra (Base, Limited, SR5)

Fits select 1999-2020 Buick, Cadillac, Chevrolet, GMC, and Hummer vehicles equipped with GM LS-based Gen III/IV V8 engines.

Ensure your engine's bottom end is built for performance with this ACL main bearing set. Designed specifically for LS-series Gen III and IV engines, these bearings are engineered to accommodate standard crankshaft journal diameters while providing an additional .025mm (0.001") of oil clearance. This extra clearance is essential for high-load or high-RPM applications where increased oil flow is required to maintain a consistent hydrodynamic film.

• Manufacturer Part Number: 5M7299HX-STD
• Application: GM LS Gen III/IV V8 engines
• Bearing Size: Standard journal diameter
• Oil Clearance: Extra .025mm / 0.001" over standard
• Features: 120-degree oil groove for optimized lubrication delivery
• Construction: High-strength materials designed for precision tolerances

This set replaces worn factory main bearings and is a critical upgrade for performance rebuilds requiring precise oiling control across all main journals.