What does the +0.25mm sizing mean for these bearings?

The +0.25mm sizing indicates that these bearings are intended for use when the connecting rod journals on your engine's crankshaft have been machined down by 0.25mm. This is a common practice during engine rebuilds to ensure proper clearance and a fresh surface for the bearings.

What is the pmax black racing line material?

The pmax black material is a tri-metal construction developed by King Engine Bearings. It's designed for high-performance applications, offering improved load capacity and wear resistance compared to standard bearings.

Are these bearings compatible with stock engines?

These bearings are designed for BMW M40, M42, M43, and M44 engines. While they are part of a racing line, they can be used in a stock rebuild if the crankshaft journals have been machined to the +0.25mm size. Always consult your engine's service manual for specific rebuild requirements.

Specifications

Brand: King Engine Bearings
Part #: CR4042XP0.25
UPC: 611500542596

King Engine Bearings BMW M40/M42/M43/M44 1.6L/1.8L/1.9L (Size +0.25mm) Connecting Rod Bearing Set

Name: King Engine Bearings BMW M40/M42/M43/M44 1.6L/1.8L/1.9L (Size +0.25mm) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-bmw-m40-m42-m43-m44-1-6l-1-8l-1-9l-siz-t14-769536
Price: 89.46 USD
Availability: BackOrder

$89.46

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Fits 1991-1995 BMW 318i. King Engine Bearings connecting rod bearing set, size +0.25mm. Features the pmax black racing line.

Key Features

Fits 1991-1995 BMW 318i, 1991-1995 BMW 318is, 1995-1999 BMW 318ti, and 1996-1998 BMW Z3.
This is a set of connecting rod bearings, sized +0.25mm for use with machined crankshaft journals.
Features King's pmax black racing line tri-metal construction for improved durability and performance.
Designed for BMW M40, M42, M43, and M44 engines with 1.6L, 1.8L, and 1.9L displacements.

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About this part

Product Details

This is a set of King Engine Bearings connecting rod bearings, specifically sized at +0.25mm. These bearings are built for BMW M40, M42, M43, and M44 engines, commonly found in models like the 1991-1995 BMW 318i. They are part of King's pmax black racing line, designed for enhanced performance.

These bearings are a direct replacement for your stock connecting rod bearings, but with an updated material and size. The +0.25mm sizing means they are intended for applications where the crankshaft journals have been machined down by 0.25mm. The pmax black material is a tri-metal construction known for its durability and performance under demanding conditions, making them a solid option for engine rebuilds where improved reliability is key.

When rebuilding your engine, ensuring proper bearing clearance is crucial for oil flow and longevity. These bearings are designed to fit right into the connecting rods of the specified BMW engines, helping to maintain correct oil pressure and reduce friction between the rod and crankshaft.