What does the STDX size mean for these bearings?

The STDX designation indicates that these main bearings are manufactured to a specific undersize. This is typically used when the engine's crankshaft has been machined down (ground) to correct imperfections or to achieve a specific clearance. Always confirm your crankshaft's journal size before ordering bearings.

What is the benefit of the PMaxBlack coating?

The PMaxBlack coating is an advanced surface treatment developed by King Engine Bearings. It is designed to enhance the bearing's ability to withstand higher loads and reduce friction, contributing to improved durability and performance, especially in demanding engine applications.

Do these bearings come with installation hardware?

This product is a set of main bearings only. Installation hardware, such as main bearing cap bolts or studs, is not included and should be sourced separately if needed for your engine rebuild.

Specifications

Brand: King Engine Bearings
Part #: MB557XPCSTDX
UPC: 611500602177

King General Motors 262/ 267/ 302/ 307/ 327/ 350 (Size STDX) pMaxBlack Coated Main Bearing Set

Name: King General Motors 262/ 267/ 302/ 307/ 327/ 350 (Size STDX) pMaxBlack Coated Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-general-motors-262-267-302-307-327-350-size-stdx-pmaxb-t14-432481
Price: 183.07 USD
Availability: BackOrder

$183.07

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

King Engine Bearings main bearing set for GM 262-350ci V8 engines. Features PMaxBlack coating for superior load capacity.

Key Features

Fits 1980-2000+ GM vehicles with 262, 267, 302, 307, 327, and 350ci V8 engines.
Features PMaxBlack coating for superior load capacity and wear resistance.
Utilizes a Tri-metal copper-based material for excellent performance.
Radialock design helps achieve optimal crush height for proper seating.
STDX size indicates a specific undersize for crankshaft machining.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

About this part

Product Details

If you're rebuilding the bottom end of your General Motors V8 engine, paying close attention to the main bearings is crucial for long-term health and performance. This main bearing set from King Engine Bearings is built for a range of popular GM displacements, including the 262, 267, 302, 307, 327, and 350 cubic inch engines. These bearings are designed to handle the stresses of daily driving and more demanding use, ensuring smooth rotation of your crankshaft.

King has been specializing in bearings since 1960, and this set features their PMaxBlack coating, which is engineered to handle superior load capacity. This advanced coating helps protect the bearing surface under high stress conditions. The bearings also utilize a Tri-metal copper-based material, known for its excellent wear resistance and embeddability, combined with the Radialock design for optimal crush height. This combination aims to provide a solid foundation for your engine's rotating assembly.

This set fits a wide variety of vehicles from the 1980s and 1990s, including many Chevrolet C/K series trucks, Camaro, and Buick models. When rebuilding an engine, it's important to ensure all components are clean and properly lubricated during installation. Refer to your vehicle's service manual for specific installation procedures and torque specifications.