What does '+.50mm undersize' mean for these bearings?

This means the bearings are designed for a crankshaft that has been machined down by 0.50mm. This is a common practice during engine rebuilds to ensure proper fit and oil clearance with worn or damaged crankshaft journals.

Are these bearings suitable for a daily driver or only for race cars?

These are described as race bearings with a trimetal construction and pMax Black coating, indicating they are built for demanding use and offer improved durability and friction reduction, making them a solid option for performance-oriented builds.

What is the pMax Black coating?

The pMax Black coating is a feature of these trimetal bearings that helps to reduce friction and improve durability. It's designed to provide a more robust bearing surface under high-stress conditions.

Specifications

Brand: King Engine Bearings
Part #: CR6877XP0.5
UPC: 611500583988

King Engine Bearings BMW S54B32 (Size +.50mm) Connecting Rod Bearing Set

Name: King Engine Bearings BMW S54B32 (Size +.50mm) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-bmw-s54b32-size-50mm-connecting-rod-be-t14-168895
Price: 194.85 USD
Availability: BackOrder

$194.85

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Fits 2001-2006 BMW M3. King Engine Bearings connecting rod bearing set, +.50mm undersize, for improved engine performance.

Key Features

Fits 2001-2006 BMW M3, 2001-2002 BMW Z3, and 2006-2009 BMW Z4.
Connecting rod bearing set for the BMW S54B32 3.2L engine.
Features trimetal construction with pMax Black coating for improved durability and reduced friction.
This set is +.50mm undersize, intended for use with a crankshaft machined to that specification.
Designed as race bearings for demanding applications.

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About this part

Product Details

King Engine Bearings is known for making solid engine components, and this connecting rod bearing set is a great example of their work for your BMW S54B32 engine. If you're rebuilding the bottom end of your 2001-2006 BMW M3, these bearings are designed to handle the demands of that high-revving engine.

This set features a trimetal construction with their pMax Black coating, which is a step up from standard bearings, offering improved durability and reduced friction. They are specifically sized at +.50mm undersize, meaning they are meant for crankshafts that have been machined down by 0.50mm during an engine rebuild. This ensures a precise fit and proper oil clearance when paired with a reconditioned crankshaft.

When you're putting an engine back together, getting the bearing clearances just right is critical for longevity and performance. These bearings are a popular choice for builds where reliability and performance are key.