What does it mean for these bearings to be undersized by 0.50mm?

Undersized bearings, like these at 0.50mm, are slightly smaller in diameter than standard bearings. They are used when the crankshaft journals have been machined down (ground) due to wear or damage. This allows for the correct oil clearance to be re-established.

What is the primary function of connecting rod bearings?

Connecting rod bearings sit between the connecting rod and the crankshaft. Their main job is to reduce friction and wear by providing a smooth, low-friction surface for the rotating crankshaft journal, while also maintaining a precise oil clearance for lubrication.

Do these bearings come with new bolts or hardware?

This product includes the connecting rod bearings only. New connecting rod bolts and nuts are typically recommended when replacing bearings, especially during an engine rebuild, and are sold separately.

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Trusted Since 1957

Est. 1957

Specifications

Brand: ACL
Part #: 4B8140A-.50

ACL Mazda 4 G6 FE DOHC 1988-94 Engine Connecting Rod Bearing Set

Name: ACL Mazda 4 G6 FE DOHC 1988-94 Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-mazda-4-g6-fe-dohc-1988-94-engine-connecting-rod-bearing-set-t14-632024
Price: 26.06 USD
Availability: BackOrder

$26.06

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Fits 1995-2002 Kia Sportage. ACL 4B8140A-.50 connecting rod bearings are undersized by 0.50mm to help restore proper oil clearance on worn crankshafts.

Key Features

Fits 1995-2002 Kia Sportage.
Fits 1979-1984 Mazda B2000.
Fits 1989-1993 Mazda B2600.
Fits 1989-1994 Mazda MPV.
Set includes connecting rod bearings for the Mazda G6 FE DOHC engine.
Bearings are undersized by 0.50mm to accommodate worn crankshaft journals.

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About this part

Product Details

This set of ACL connecting rod bearings is specifically made for the Mazda G6 FE DOHC engine found in certain models from 1988 to 1994. These bearings are undersized by 0.50mm, which is crucial when the crankshaft journals have experienced wear. Installing these undersized bearings helps to restore the correct oil clearance between the connecting rod and the crankshaft, ensuring proper lubrication and reducing friction. This is a common repair when rebuilding an engine or addressing issues related to excessive bearing wear.

When you're rebuilding an engine or addressing worn crankshaft journals, getting the right bearing size is key. These ACL bearings are well-built and designed to meet the needs of your engine rebuild. Always refer to your vehicle's service manual for the correct installation procedures and torque specifications.