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

The +0.25mm sizing indicates that these bearings are intended for use with a crankshaft that has been machined down by 0.25mm. This is typically done to correct for wear on the crankshaft journals or to achieve a specific bearing clearance during an engine rebuild.

What is the benefit of the polymer coating on these bearings?

The specialized polymer coating on the bearing surface is designed to reduce friction and wear, particularly during the initial break-in period after installation. It helps protect the bearing from scuffing and promotes a smoother run-in.

What is the construction of these King Engine Bearings?

These bearings utilize a tri-metal construction, which includes a steel backing for structural integrity, a copper-lead alloy overlay for load capacity and heat dissipation, and the aforementioned polymer coating for enhanced surface protection.

Specifications

Brand: King Engine Bearings
Part #: CR224GPC0.25
UPC: 611500621673

King Engine Bearings BMW S65B40A/S85B50A (Size +0.25mm) Connecting Rod Bearing Set

Name: King Engine Bearings BMW S65B40A/S85B50A (Size +0.25mm) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-bmw-s65b40a-s85b50a-size-0-25mm-connec-t14-769459
Price: 125.86 USD
Availability: BackOrder

$125.86

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King Engine Bearings connecting rod bearing set for BMW S65B40A/S85B50A engines. Size +0.25mm.

Key Features

This is a connecting rod bearing set for BMW S65B40A and S85B50A engines.
The bearings are sized +0.25mm, indicating they are for use with machined crankshaft journals.
Features King's GPC series tri-metal construction with a steel backing.
Includes a specialized polymer coating on the bearing surface to reduce friction and wear.
Designed to offer good load capacity and heat dissipation.

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About this part

Product Details

These King Engine Bearings connecting rod bearings are built with a unique overlay structure that includes a specialized polymer coating. This coating is designed to reduce friction and wear, especially during the critical break-in period. They are specifically sized at +0.25mm, meaning they are intended for engines where the crankshaft journals have been machined down by 0.25mm to correct for wear or to achieve a specific clearance.

The GPC series bearings from King feature a tri-metal construction with a steel backing for strength and a copper-lead alloy overlay. This combination offers good load-carrying capacity and heat dissipation. The polymer coating on the bearing surface further enhances their performance by providing a smoother initial run-in and protecting against scuffing. These bearings are a solid option for rebuilding or refreshing the bottom end of BMW S65B40A or S85B50A engines.

When installing these bearings, it's important to ensure the crankshaft journals are clean and properly measured to confirm the +0.25mm sizing. Always refer to the manufacturer's service manual for the correct installation procedures and torque specifications.