What does the PMAX Black coating do?

The PMAX Black coating is an advanced racing line feature from King Engine Bearings. It's designed to offer improved durability and reduced friction, especially under the high-stress conditions found in performance engine applications.

What does 'Size 021' mean for these bearings?

The 'Size 021' indicates that these bearings are 0.021 inches undersize. This means they are intended for use with a crankshaft that has been machined down by 0.021 inches to ensure a proper fit and oil clearance.

Are these bearings suitable for a stock engine rebuild?

While these are performance bearings with a racing line coating, they can be used in a stock rebuild if the crankshaft has been machined to the 0.021 undersize specification. For a standard stock rebuild without machining, you would typically look for standard size bearings.

Specifications

Brand: King Engine Bearings
Part #: CR808XPN021
UPC: 611500529245

King Chevrolet BBC 369-502 GEN IV/V/VI Performance Rod Bearing Set (Size 021) - Coated

Name: King Chevrolet BBC 369-502 GEN IV/V/VI Performance Rod Bearing Set (Size 021) - Coated
Brand: King Engine Bearings
SKU: king-engine-bearings-king-chevrolet-bbc-369-502-gen-iv-v-vi-performance-rod-bear-t14-588452
Price: 139.40 USD
Availability: BackOrder

$139.40

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King Engine Bearings performance rod bearing set for Chevrolet BBC 369-502 GEN IV/V/VI. Size 021, PMAX Black racing line.

Key Features

Fits Chevrolet BBC 369-502 GEN IV, V, and VI engines.
Features King's PMAX Black racing line coating for improved durability and reduced friction.
This is a performance rod bearing set.
The set is sized 0.021 inches undersize.
Compatible with a wide range of vehicles including Buick Skylark, Cadillac Calais, and Chevrolet Bel Air.

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About this part

Product Details

King Engine Bearings is known for making well-built engine components, and this performance rod bearing set is a great example of their work for Chevrolet Big Block engines. Specifically designed for the 369-502 GEN IV, V, and VI series, these bearings are built to handle the demands of performance applications. They feature King's PMAX Black racing line technology, which is their advanced coating designed for high-stress environments.

This set is sized at 0.021 inches undersize, meaning it's intended for crankshafts that have been machined down by that amount. The PMAX Black coating is a notable feature, offering improved durability and reduced friction under heavy loads, which is crucial for engines pushing beyond stock power levels. These bearings fit a wide range of vehicles, including popular models like the Chevrolet Bel Air, C10 Pickup, and Buick Skylark from various years, ensuring broad compatibility for many BBC builds.