What does '.25mm undersize' mean for these bearings?

This means the bearings are manufactured to be 0.25mm smaller in diameter than standard size. They are used when the engine's crankshaft journals have been machined down by 0.25mm to remove wear or imperfections.

Are these bearings suitable for a stock engine rebuild?

Yes, if your engine's crankshaft has been professionally machined and measured to be 0.25mm undersize, these bearings are suitable for a stock or performance rebuild.

What is the main function of main bearings?

Main bearings support the crankshaft within the engine block. They create a low-friction surface that allows the crankshaft to rotate smoothly while maintaining proper oil clearance.

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Est. 1957

ACL 83-97 Toyota 4.4AGE/4AGE .25mm Main Bearing Set

Specifications

Brand: ACL
Part #: 5M1695A-.25
UPC: 084777700178

ACL 83-97 Toyota 4.4AGE/4AGE .25mm Main Bearing Set

Name: ACL 83-97 Toyota 4.4AGE/4AGE .25mm Main Bearing Set
Brand: ACL
SKU: acl-acl-83-97-toyota-4-4age-4age-25mm-main-bearing-set-t14-115055
Price: 14.78 USD
Availability: BackOrder

$14.78

On Backorder

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

Fits 1989 Geo Prizm. ACL .25mm Main Bearing Set. This set is .25mm undersize for engine rebuilding.

Key Features

Fits 1989 Geo Prizm.
ACL main bearing set.
Part number 5M1695A-.25.
This set is .25mm undersize.
Designed for 4.4AGE/4AGE engines.

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Fits this vehicle

Geo Prizm 1989

Product Details

You get a full set of main bearings in this kit, which means one box handles the critical components for your engine rebuild. These ACL bearings are specifically made to fit your 1989 Geo Prizm with the 4.4AGE/4AGE engine. Main bearings are crucial because they support the crankshaft, allowing it to spin smoothly within the engine block. When rebuilding or repairing your engine, using the correct size and well-built bearings is essential for proper oil clearance and long-term engine health.

This particular set is .25mm undersize, meaning it's intended for use when the crankshaft journals have been machined down by 0.25mm to clean up wear or damage. ACL has been making engine bearings for a long time, and they're known for producing reliable parts. This set is a solid option if you're doing a performance build or a standard engine overhaul where the crankshaft has been reconditioned to this specific size.