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

This means the bearings are manufactured to be 0.25mm smaller in diameter than a standard bearing. They are used when the engine's crankshaft has been ground down by 0.25mm to remove wear and ensure proper oil clearance.

What engine sizes do these bearings fit?

These ACL connecting rod bearings are specifically designed for Ford's 4.6L and 5.4L V8 engines. This covers a wide range of popular Ford trucks and cars.

ACL Ford Prod. V8 4.6L/5.4L 1991-05 Engine Connecting Rod Bearing Set

Specifications

Brand: ACL
Part #: 8B1442A-.25

ACL Ford Prod. V8 4.6L/5.4L 1991-05 Engine Connecting Rod Bearing Set

Name: ACL Ford Prod. V8 4.6L/5.4L 1991-05 Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-ford-prod-v8-4-6l-5-4l-1991-05-engine-connecting-rod-bearing-set-t14-630590
Price: 25.63 USD
Availability: BackOrder

$25.63

On Backorder

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Fits 1992-2011 Ford Crown Victoria. ACL connecting rod bearings for 4.6L/5.4L V8 engines. Part# 8B1442A-.25. Direct fit.

Key Features

Fits 1992-2011 Ford Crown Victoria.
Fits 1997-2010 Ford F-150.
Fits 1996-2010 Ford Mustang.
Designed for Ford 4.6L and 5.4L V8 engines.
This is a .25mm undersize bearing set, intended for use with a crankshaft machined to match.
ACL is a well-known brand for engine bearings.

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Fits these vehicles

Ford Crown Victoria 1992-2011
Ford F-150 1997-2010
Ford Mustang 1996-2010

Product Details

This set of ACL connecting rod bearings is made for Ford's popular V8 engines, specifically the 4.6L and 5.4L found in models like the Crown Victoria, F-150, and Mustang. When your engine's connecting rod bearings wear out, they can cause increased noise and, eventually, serious engine damage. These bearings are designed to replace the stock ones, helping to restore proper oil clearance and ensure your engine runs smoothly. They are a .25mm undersize, meaning they are intended for use on crankshafts that have been machined down by 0.25mm to correct wear.

Replacing rod bearings is a job that requires the engine to be disassembled. It's a good idea to inspect your crankshaft for wear and ensure it's within specifications before installing new bearings. If you're rebuilding your engine or addressing bottom-end noise, this set from ACL is a solid option.