Best Performance Engine Main Bearings in 2026

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

H-Series bearings are narrowed for greater crankshaft fillet clearance

All H-Series bearings are made in Atlantic, Iowa USA

Product Type :Auto Part

Package Dimensions :2.7 " L X3.6 " W X2.7 " H

Country Of Origin :United States

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

H-Series bearings are narrowed for greater crankshaft fillet clearance

All H-Series bearings are made in Atlantic, Iowa USA

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

H-Series bearings are narrowed for greater crankshaft fillet clearance

All H-Series bearings are made in Atlantic, Iowa USA

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

Extra oil clearance

Fit type: Fits Toyota Lexus 2JZGE 2JZGTE

Package Dimensions : 5.62 L x 1.92 H x 3.48 W (inches)

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

H-Series bearings are narrowed for greater crankshaft fillet clearance

All H-Series bearings are made in Atlantic, Iowa USA

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

H-Series bearings are narrowed for greater crankshaft fillet clearance

All H-Series bearings are made in Atlantic, Iowa USA

ACL

Babbitt layer adapts to the journal surfaces and has natural lubricity

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

ACL

ACL Race Series Main Bearings:?The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings.

Part Number: 5M8361H-STD

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

Babbitt layer adapts to the journal surfaces and has natural lubricity

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

High Strength Steel Backing, Higher tensile strength of steel alloy improves rod bearing strength and retention. Increased crush improves bearing retention from higher radial contact pressures, and also improves heat dissipation.

Increased Eccentricity, Bearing eccentricity is the gradual reduction in wall thickness between the crown and parting line. This enhanced engineering feature allows for compensation for bore distortion and assists in the formation of hydrodynamic oil film.

Extended Oil Grooves and Tapered Groove Run-Out, Main bearing grooved uppers with matching groove lowers provide for less interruption to big end oil supply. Tapered groove run–out smooths big end supply cutoff and avoids pressure pulsing and cavitation.

ACL

Babbitt layer adapts to the journal surfaces and has natural lubricity

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

Provides a margin of forgiveness for vehicles that don't get maintenance service as often as they should

Additional embed ability makes it a good choice for older engines

Manufactured from cast copper-lead, increases fatigue strength by approximately 20% compared to powdered metal processes, referred to as sintering, which is used by the competition

H-Series bearings are narrowed for greater crankshaft fillet clearance

All H-Series bearings are made in Atlantic, Iowa USA