What does the STDX sizing mean for these bearings?

The STDX designation means these bearings are 0.001 inch undersize. This is important if your crankshaft has been machined to a smaller diameter during an engine rebuild. Always verify your crankshaft dimensions before ordering bearings.

What is the PmaxKote coating and why is it beneficial?

PmaxKote is a polymer coating developed by King Engine Bearings, part of their racing line. It's designed to reduce friction and improve oil film strength, which helps protect the bearings under high-load conditions and can contribute to longer bearing life.

Do these bearings come with installation instructions?

While this set includes the necessary bearings for your engine, specific installation instructions and torque specifications are typically found in the vehicle's official service manual. It's recommended to consult a professional mechanic for proper installation.

Specifications

Brand: King Engine Bearings
Part #: MB7039XPCSTDX
UPC: 611500612800

King BMW M20/M50 2.0L/2.5L/2.7L Crankshaft Main Bearings Set (Size STDX) - 7 Pairs Coated

Name: King BMW M20/M50 2.0L/2.5L/2.7L Crankshaft Main Bearings Set (Size STDX) - 7 Pairs Coated
Brand: King Engine Bearings
SKU: king-engine-bearings-king-bmw-m20-m50-2-0l-2-5l-2-7l-crankshaft-main-bearings-se-t14-311913
Price: 191.90 USD
Availability: InStock

$191.90

Only 1 left in stock

Key Features

Fits a wide range of BMW M20 and M50 engines (2.0L, 2.5L, 2.7L).
Includes 7 pairs of main bearings for complete coverage.
Features King's PmaxKote polymer coating for improved friction reduction and oil retention.
STDX size indicates the bearings are 0.001 inch undersize for crankshaft applications.
Designed for performance and durability in BMW engine rebuilds.

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About this part

Product Details

If you're rebuilding the bottom end of a BMW M20 or M50 engine, specifically those with 2.0L, 2.5L, or 2.7L displacements, this main bearing set from King Engine Bearings is a solid option. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. This particular set is designed for a range of BMW models, including vehicles like the 325i, 525i, and Z3.

What sets these bearings apart is their PmaxKote polymer coating, which is part of King's racing line. This advanced coating helps to reduce friction and improve oil retention, especially under high-load conditions that can occur during spirited driving or demanding use. The STDX size indicates they are 0.001 inch undersize, which is important to note if you're machining your crankshaft. Having a well-built set of main bearings is essential for the longevity and performance of your engine rebuild.

This set includes 7 pairs of bearings, covering all the main journals for your engine. Ensure you consult your vehicle's service manual or a professional mechanic for proper installation procedures and any specific requirements related to crankshaft machining or assembly torque specifications.