What does the +0.25mm size mean for my engine?

The +0.25mm designation means these bearings are slightly larger than standard size. This is typically used when the crankshaft journals have been machined down (ground) by 0.25mm to ensure proper oil clearance and a snug fit.

What is the Tri-M+ babbit overlay?

Tri-M+ is King Engine Bearings' enhanced babbit overlay material. It's designed to provide improved durability and performance, especially in engines that experience moderate operating loads.

Do I need to replace these bearings if my engine is making knocking noises?

Rod bearing noise often sounds like a deep knocking or rattling that increases with engine RPM. If you suspect bearing issues, it's best to have a qualified mechanic inspect the engine to confirm the source of the noise and determine if these bearings are the correct replacement.

Specifications

Brand: King Engine Bearings
Part #: CR4538CA0.25
UPC: 611500540233

King Engine Bearings Mini Cooper S/Cooper S Conv/Works W11B16A Rod Bearing Set - Size +0.25mm

Name: King Engine Bearings Mini Cooper S/Cooper S Conv/Works W11B16A Rod Bearing Set - Size +0.25mm
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mini-cooper-s-cooper-s-conv-works-w11b-t14-308922
Price: 62.36 USD
Availability: InStock

$62.36

Only 5 left in stock

Fits 2002-2008 Mini Cooper S. This is a +0.25mm undersize rod bearing set from King Engine Bearings, made with a tri-metal copper-based material for improved durability.

Key Features

Fits 2002-2008 Mini Cooper S models with the W11B16A engine.
This is a +0.25mm undersize rod bearing set.
Constructed with a tri-metal copper-based material.
Features a Tri-M+ enhanced babbit overlay.
Suitable for medium-load engines.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

This is a set of connecting rod bearings for your 2002-2008 Mini Cooper S, specifically for the W11B16A engine. These bearings are sized at +0.25mm, meaning they are slightly larger than standard to account for wear on the crankshaft journals.

King Engine Bearings specializes in creating well-built engine bearings. This set uses a tri-metal copper-based material with an enhanced babbit overlay, known as Tri-M+ This construction is well-suited for engines that experience medium loads, offering a solid balance of performance and longevity. Using the correct size bearing is crucial for proper oil clearance and engine health.