ACL Race Series Main Bearings | 1997+ Mitsubishi 4G63/4G63T/4G64 (5M1219H)

Description

Find ACL Race Series Main Bearings for 1997+ Mitsubishi 4G63/4G63T/4G64 for Mitsubishi Lancer Evolution 7/8/9 at EvoMotorParts. This engine and cooling part helps support reliable cooling, durability, and confidence under spirited driving while keeping your Evo build focused on quality, compatibility, and long-term performance.

Check the full product overview below for fitment, features, and installation notes before ordering for your Mitsubishi Lancer Evolution 7/8/9.

Race Series Main Engine Bearings by ACL
High performance driving demands that you use the best parts. So rely on ACL Race Series performance engine bearings to perform to exacting race standards you expect. They provide the dependability it takes to hold up under higher RPM conditions. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance trimetal bearings. These ACL Race Series performance engine bearings go the distance.
ACL Race Series performance engine bearings are manufactured to exacting tolerances with particular attention paid to wall thickness accuracy. This ensures reliable fit and helps maintain consistent clearances.
Features
High strength lead-tin-copper overlay plate with reduced thickness
Hardened steel backing to assist with bearing retention
Layers of nickel barrier and high fatigue strength copper-lead lining
Elimination of flash plating on the back of the bearings
Increased eccentricity to compensate for bore distortion at high rpm
3/4 grooved Main Bearings to optimize bearing load and oil flow to the conrod bearings
Precision Machined to tight consistent wall tolerances
Enlarged ID Chamfers on bearing edges to accommodate performance crankshafts.
PLEASE NOTE
ACL RACE Series performance engine bearings do not start out with the silver grey appearance of regular aftermarket bearings, as there is no final silvery tin flash applied to these bearings. A silvery tin finish as applied to other bearings can, under high loading and heat, move with the plate, causing high spots on the back of the shells and distorting the bearings.
Applications
1997+ Mitsubishi 4G63 Engines
1997+ Mitsubishi 4G63T Engines
1997+ Mitsubishi 4G64 Engines
Benefits
High Strength and Durability
Maintains Consistent Clearances
Improved Fatigue Properties
Improved Bearing Retention
What’s In The Box?
1 – ACL Race Main Bearings Set
Necessary Hardware (if applicable)
Instructions/Manuals(if applicable)
Warranty Information
References
ACL Race Series Catalog (Useful Info on Oil Clearances and Fitment)
Warranty

ACL Manufacturer Warranty