What does '0.025mm undersize' mean for these bearings?

This means the bearings are manufactured to be slightly smaller than the standard size. They are intended for use when the crankshaft journals have been machined down by 0.025mm during an engine rebuild to ensure a proper fit and clearance.

Are these bearings suitable for a stock engine rebuild?

Yes, these are high-performance bearings that can be used in a stock rebuild. Their primary function is to provide the correct clearance for the crankshaft, and ACL is known for well-built engine components.

Does this set include bearings for all cylinders?

This set includes bearings for one bank of cylinders. Depending on your engine's configuration, you may need to purchase an additional set if your engine has more than four cylinders or requires bearings for both banks.

ACL Connecting Rod Bearing Set 4B1146H-.025 - High Performan

Name: ACL Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM 0.025mm Oversized High Performance Rod Bearing Set
Brand: ACL
SKU: acl-acl-mitsubishi-4g63-4g64-6-bolt-1st-gen-dsm-0-025mm-oversized-high-performan-t14-12951
Price: 45.90 USD
Availability: InStock

ACL Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM 0.025mm Oversized High Performance Rod Bearing Set

$45.90

Only 1 left in stock

ACL 4G63/4G64 6 Bolt 1st Gen DSM 0.025mm Oversized High Performance Rod Bearing Set. Crucial for engine rebuilds, these bearings ensure proper clearance.

Key Features

Fits a wide range of Mitsubishi, Dodge, Plymouth, and Eagle vehicles from 1971-2006.
Designed for Mitsubishi 4G63 and 4G64 engines, including 6-bolt 1st Gen DSM.
Set includes connecting rod bearings for one bank of cylinders.
Bearings are 0.025mm (0.001 inch) undersize for use with machined crankshafts.
High-performance design suitable for demanding engine applications.

No-fit, no charge. Wrong part? Send it back, free return label.

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Will it fit your car?

Product Details

Rebuilding the engine in your Mitsubishi or Dodge/Plymouth/Eagle vehicle? If you're working on a 4G63 or 4G64 engine, especially the 6-bolt 1st Gen DSM variants, you'll want to pay close attention to your connecting rod bearings. These ACL bearings are designed to provide the correct clearance between your connecting rods and crankshaft, which is essential for proper oil flow and lubrication. This set is specifically sized at 0.025mm undersize, meaning it's meant for crankshafts that have been machined down by that amount during an engine rebuild.

ACL has a solid reputation for making well-built engine components, and these high-performance rod bearings are no exception. They are built to handle the demands of performance applications, ensuring reliable operation. When you're rebuilding an engine, getting the bearing clearances just right is critical for longevity and performance. Using bearings that are the correct size for your machined crankshaft is a key part of that process.

This set includes bearings for one bank of cylinders. If you're doing a full engine rebuild, make sure you have all the necessary components. Always refer to your vehicle's specific service manual for detailed installation procedures and torque specifications.