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ACL Bearings 4B8291-.25 Connecting Rod Bearing Set Oversize - 25mm

Manufacturer

Part Number

4B8291-.25
Sale Price

$9.29

Estimated ship date Saturday, December 05

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No Hassle Returns

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Live-in-stock inventory

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Product Details

The ACL Bearings 4B8291-.25 is a high-performance connecting rod bearing set designed with a .25mm oversize specification for precision engine rebuilds. The .25 oversize dimension accommodates engine rebuilds where the crankshaft journals have been machined, ensuring a precise and secure fit.

Key Features:

  • Trimetal design features a high-strength overlay plate with reduced thickness for improved fatigue resistance, backed by hardened steel for enhanced support and retention under extreme conditions
  • Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing
  • Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing
  • The bearing surfaces are finely finished to promote optimal oil film formation, reducing metal-to-metal contact and enhancing engine longevity
  • Micron tolerance machining supported by precision measurement systems delivers consistent accuracy to key characteristics like wall thickness and crush, ensuring reliable fit and consistent clearances

ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world, with rod and main bearings as standard components in Race engines that have set records and won championships from Mexico to Bonneville. These bearings provide the durability and precision needed for demanding performance applications, from high-output street builds to dedicated racing engines.

Products specifications

Size

.25

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