What does 'extra oil clearance' mean for these bearings?

Extra oil clearance means there is a slightly larger gap between the bearing and the crankshaft journal. This allows for more oil to flow through, which can help keep the crankshaft and bearings cooler and better lubricated, especially in high-performance or high-mileage engines.

Are these bearings suitable for a stock engine rebuild?

Yes, these are standard size bearings and are suitable for stock engine rebuilds. The extra oil clearance can also be beneficial for stock engines that have accumulated significant mileage and may have slight wear on the crankshaft journals.

What other parts are typically needed when replacing main bearings?

When replacing main bearings, it's recommended to also replace the rod bearings, crankshaft seals (front and rear), and a full set of engine gaskets. This ensures a complete and reliable engine rebuild.

ACL Mitsubishi 4G63/4G64 7 Bolt EVO V-IX Standard Size High Performance w/ Extra Oil Clearance Main

Specifications

Brand: ACL
Part #: 5M1219HX-STD
UPC: 9315726125250

ACL Mitsubishi 4G63/4G64 7 Bolt EVO V-IX Standard Size High Performance w/ Extra Oil Clearance Main

Name: ACL Mitsubishi 4G63/4G64 7 Bolt EVO V-IX Standard Size High Performance w/ Extra Oil Clearance Main
Brand: ACL
SKU: acl-acl-mitsubishi-4g63-4g64-7-bolt-evo-v-ix-standard-size-high-performance-w-ex-t14-13017
Price: 69.63 USD
Availability: BackOrder

$69.63

On Backorder — Expected to ship by Apr 23, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ACL 4G63/4G64 7 Bolt main bearings for Mitsubishi EVO V-IX, Lancer, Eclipse. Standard size, high performance w/ extra oil clearance.

Key Features

Fits Eagle Summit, Mitsubishi Eclipse, Expo, Expo LRV, Galant, Lancer, and Montero Sport.
Designed for Mitsubishi 4G63 and 4G64 7-bolt engines.
Standard size main bearings.
High performance bearing material for durability.
Features extra oil clearance for improved lubrication in demanding applications.
ACL is a well-known manufacturer of engine bearings.

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Will this fit your vehicle?

Product Details

You get a full set of main bearings with extra oil clearance in this kit, which means you're ready to rebuild your engine with confidence. These ACL bearings are specifically made for the Mitsubishi 4G63 and 4G64 7-bolt engines found in popular models like the Eclipse, Lancer, and EVO V through IX. Getting the oil clearance just right is crucial for engine health, especially in performance applications where the engine sees higher loads and RPMs.

ACL has been making engine bearings for a long time, and these are well-built for the job. They use a high-performance material that holds up well under stress. The 'extra oil clearance' means there's a bit more room for oil to flow between the bearing and the crankshaft journal. This is a smart choice if you're building a performance engine or if your original engine has seen a lot of miles and might have some wear. This standard size bearing is designed to fit the factory crankshaft journals.

When you're rebuilding an engine, it's important to have all the right parts. Make sure you also have new rod bearings, seals, and gaskets to complete the job. Always refer to your vehicle's service manual for the correct installation procedures and torque specifications.