What is the benefit of extra oil clearance in these main bearings?

Extra oil clearance allows for a greater volume of oil to flow between the bearing and the crankshaft. This is beneficial in high-performance or high-RPM engines to ensure consistent lubrication and help manage heat, reducing the risk of bearing damage.

Are these bearings a direct replacement for all 4G63/4G64 engines?

These are standard size bearings intended for 6-bolt 1st Gen DSM variants of the 4G63 and 4G64 engines. It's important to verify your engine's specific configuration and ensure it matches the '6 bolt 1st Gen DSM' designation. Always confirm fitment for your exact vehicle model and year.

What should I check before installing these main bearings?

Before installation, it's recommended to have your crankshaft journals measured to ensure they are within factory specifications and are perfectly straight. This helps guarantee proper bearing crush and oil clearance, maximizing the lifespan and performance of the new bearings.

ACL Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM Standard Size High Performance w Extra Oil Clearance Mai

Specifications

Brand: ACL
Part #: 5M1144HX-STD
UPC: 9315726182116

ACL Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM Standard Size High Performance w Extra Oil Clearance Mai

Name: ACL Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM Standard Size High Performance w Extra Oil Clearance Mai
Brand: ACL
SKU: acl-acl-mitsubishi-4g63-4g64-6-bolt-1st-gen-dsm-standard-size-high-performance-w-t14-13009
Price: 109.59 USD
Availability: InStock

$109.59

Only 6 left in stock

ACL 4G63/4G64 6 Bolt 1st Gen DSM standard size main bearing set with extra oil clearance. A solid option for performance builds.

Key Features

Fits 1976-2006 Dodge, Eagle, Hyundai, Mitsubishi, and Plymouth vehicles.
Standard size main bearings for 4G63 and 4G64 6-bolt 1st Gen DSM engines.
Features extra oil clearance for improved lubrication at higher RPMs and loads.
Well-built by ACL, a well-known name in engine components.
Designed for performance applications where engine reliability is key.

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Will this fit your vehicle?

Product Details

Already running a built 4G63 or 4G64 engine? This main bearing set from ACL is the next piece of the puzzle for your performance build. These bearings are designed with extra oil clearance, which is crucial for engines that see higher RPMs or are under heavy load. This extra space allows for a more consistent flow of oil, helping to keep your crankshaft and bearings properly lubricated and reducing wear under demanding conditions.

ACL has been making engine bearings for a long time, and this set is well-built for the job. They are standard size, meaning they're meant to be used with a factory-spec crankshaft. The extra oil clearance is a notable feature that sets these apart from a standard replacement bearing, making them a popular choice for tuners and racers who want a little more insurance for their engine's longevity when pushing the limits.

When you're rebuilding or upgrading your engine, using a quality set of bearings like these is essential. They are designed to fit right into your 6-bolt 1st Gen DSM engine, but always double-check your specific vehicle's fitment. It's a good idea to have your crankshaft journals measured and checked for straightness before installing any new bearings to ensure optimal performance and durability.