What does '1.25 undersize' mean for these bearings?

The '1.25' in the part number CR4431AM1.25 indicates that these bearings are 1.25 thousandths of an inch undersize. This means they are intended for use when the crankshaft journals have been machined down by that amount to clean them up or correct wear.

What is the construction of these rod bearings?

These bearings feature a bimetal construction. This design utilizes an aluminum base layer, which helps with load-carrying capacity and thermal conductivity, ensuring reliable operation in your engine.

Are these bearings sold individually or as a set?

This product is a rod bearing set, meaning it includes all the necessary bearings for the connecting rods on the specified engines. You will receive enough bearings to service all connecting rods in the engine.

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Specifications

Brand: King Engine Bearings
Part #: CR4431AM1.25
UPC: 611500133053

King Engine Bearings Nissan (Size 1.25) Rod Bearing Set

Name: King Engine Bearings Nissan (Size 1.25) Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-nissan-size-1-25-rod-bearing-set-t14-4330106
Price: 18.74 USD
Availability: BackOrder

$18.74

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King Engine Bearings Nissan (Size 1.25) Rod Bearing Set. Fits many Datsun and Nissan models.

Key Features

Fits many Datsun and Nissan models including 200SX, 510, 610, 620 Pickup, 710, 720, D21, and Pathfinder.
Designed for Datsun L18 engines.
Bimetal construction with an aluminum base.
Rod bearing set, part number CR4431AM1.25.
Size is 1.25 undersize, intended for use with a machined crankshaft.

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About this part

Product Details

King Engine Bearings rod bearing set, part number CR4431AM1.25. This set is designed for Datsun L18 engines and fits a wide range of Nissan vehicles, including models like the 200SX, 510, and 720 pickup. These bearings are constructed with a bimetal design, featuring an aluminum base for reliable performance.

When rebuilding or repairing an engine, especially one with an L18 motor, fresh rod bearings are crucial. They sit between the connecting rod and the crankshaft, allowing for smooth rotation while handling significant loads. This set is specifically sized at 1.25 undersize, which is important to note if you are machining your crankshaft to match.