What does the STDX sizing mean for these bearings?

The STDX designation indicates that these main bearings are 0.040 inch undersize. This means they are intended for use with a crankshaft that has been machined down by 0.040 inches to match this bearing size during an engine rebuild.

What is the benefit of the coating on these bearings?

The special coating on these King Engine Bearings helps to reduce friction and wear. It is particularly beneficial during the engine's break-in period and under high-stress operating conditions, contributing to better oil film retention and crankshaft protection.

Are these bearings suitable for a performance build?

Yes, the advanced materials and special coating make these bearings a solid option for engine rebuilds, including those aiming for improved performance. They are designed for reliable operation and protection under demanding conditions.

Specifications

Brand: King Engine Bearings
Part #: MB556XPNCSTDX
UPC: 611500618291

King Engine Bearings Chevrolet 369-502 Gen IV/ V/ VI - Coated (Size STDX) Main Bearing Set

Name: King Engine Bearings Chevrolet 369-502 Gen IV/ V/ VI - Coated (Size STDX) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-chevrolet-369-502-gen-iv-v-vi-coated-s-t14-432474
Price: 180.84 USD
Availability: BackOrder

$180.84

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King Engine Bearings Chevrolet Gen IV/ V/ VI coated main bearing set. Size STDX. For rebuilding your engine.

Key Features

This set includes coated main bearings for Chevrolet Gen IV, V, and VI engines.
The bearings are sized STDX, meaning they are 0.040 inch undersize.
Features a special coating to reduce friction and wear.
Designed for solid oil film retention and crankshaft protection.
Well-built bearing material for reliable engine performance.

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About this part

Product Details

This is a King Engine Bearings Main Bearing Set, part number MB556XPNCSTDX. You get the coated main bearings for your Chevrolet Gen IV, V, or VI engine. These bearings are sized STDX, which means they are 0.040 inch undersize, intended for crankshafts that have been machined down to match this specification during an engine rebuild.

King uses a special coating on these bearings to help reduce friction and wear, especially during the critical break-in period and under demanding conditions. This coating works with the well-built bearing material to ensure solid oil film retention and protect your crankshaft journals. They are designed to fit right into your rebuilt engine, providing a strong foundation for reliable performance.