What does 0.25mm undersize mean for these bearings?

This means the bearings are slightly smaller than standard size, by 0.25mm. They are intended for use when the engine's crankshaft journals have been machined down by 0.25mm to correct wear or damage.

What is the material construction of these bearings?

These bearings feature a bimetal construction with an aluminum base. This type of material is chosen for its good load-carrying capacity and ability to conform to the crankshaft.

Do these bearings come with installation instructions?

While this set includes the bearings themselves, it's recommended to refer to the manufacturer's official installation guidelines or a service manual for proper installation procedures and torque specifications.

Specifications

Brand: King Engine Bearings
Part #: CR6607AM1.25
UPC: 611500138850

King Engine Bearings Datsun L28 (Size +0.25mm) Connecting Rod Bearing Set

Name: King Engine Bearings Datsun L28 (Size +0.25mm) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-datsun-l28-size-0-25mm-connecting-rod--t14-769970
Price: 28.72 USD
Availability: BackOrder

$28.72

On Backorder — Expected to ship by Aug 2, 2026

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

King Engine Bearings L28 connecting rod bearing set, 0.25mm undersize. For Nissan 240Z, 260Z, 280Z, 280ZX, 810, Maxima.

Key Features

This product is a connecting rod bearing set for the Datsun L28 engine.
The bearings are sized 0.25mm undersize, suitable for a machined crankshaft.
Constructed with a bimetal design featuring an aluminum base.
Fits a variety of Nissan vehicles including the 240Z, 260Z, 280Z, 280ZX, 810, and Maxima.

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About this part

Product Details

What you get in this box is a set of connecting rod bearings for your Datsun L28 engine, specifically sized at 0.25mm undersize. These bearings are made with a bimetal construction, meaning they have an aluminum base, which is a common and effective material for handling the loads and heat in an engine's bottom end. They are designed to fit a range of vehicles, including popular models like the Nissan 240Z, 260Z, and 280Z, as well as the 280ZX, 810, and Maxima.

When you're rebuilding or refreshing an L28 engine, especially if the crankshaft has been machined to a 0.25mm undersize, these bearings are what you'll need to ensure proper clearance and oil film. The bimetal construction helps them conform to the crankshaft journal while providing a solid bearing surface that can withstand the pressures of combustion. King Engine Bearings is a well-known name in engine bearings, and this set is built to meet the demands of keeping your engine running smoothly.