What does the 0.010 inch sizing mean for these bearings?

The '010' in the part number indicates that these bearings are 0.010 inches undersize compared to standard main bearings. This is typically used when a crankshaft has been machined (ground down) to correct imperfections or to achieve a specific clearance. You'll need to measure your crankshaft journals to ensure they are machined to accept this undersize.

What is PMaxBlack technology?

PMaxBlack is King Engine Bearings' proprietary technology designed to enhance the load-carrying capabilities of their bearings. It's a feature aimed at improving durability and performance under demanding conditions.

What is the benefit of the Radialock design?

Radialock is a feature that helps the bearing maintain its proper crush height. This is important during installation to ensure the bearing is securely seated in the engine block or connecting rod, which aids in proper oil sealing and heat transfer.

King Engine Bearings Ford Windsor 260CI/289CI 5.0L 529XP Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB529XP010
UPC: 611500531767

King Engine Bearings Ford Windsor 260CI/289CI 5.0L 529XP Main Bearing Set

Name: King Engine Bearings Ford Windsor 260CI/289CI 5.0L 529XP Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-windsor-260ci-289ci-5-0l-529xp-ma-t14-822971
Price: 135.91 USD
Availability: BackOrder

$135.91

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King Engine Bearings MB529XP010 Main Bearing Set for Ford Windsor 260CI/289CI 5.0L. Features PMaxBlack for superior load capacity.

Key Features

Fits 78+ vehicle make/model combinations including Ford Bronco, F-100, and Explorer.
Features King's PMaxBlack technology for superior load capacity.
Constructed with a tri-metal copper-based material for durability.
Includes Radialock design for optimal crush height and proper fit.
This is a 0.010 inch undersize main bearing set.

⚠️ 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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Will this fit your vehicle?

Product Details

This is a main bearing set from King Engine Bearings, specifically designed for Ford Windsor engines like the 260, 289, 302, and 5.0L displacements. These bearings are a critical part of your engine's rotating assembly, supporting the crankshaft and ensuring it spins smoothly within the engine block. If you're rebuilding your engine or addressing bottom-end noise, a well-built set of main bearings is essential for proper oil pressure and long-term durability.

King Engine Bearings specializes in this area, and this MB529XP010 set utilizes their PMaxBlack technology, which is engineered to handle superior load capacities. The bearings are made from a tri-metal copper-based material, offering a solid foundation for performance. They also feature Radialock, a design element that helps maintain optimal crush height during installation, which is important for a snug fit and proper oil sealing. This set is 0.010 inch undersize, so be sure to check your crankshaft journals for proper sizing before installation.

This set fits a wide range of Ford vehicles, including models like the Ford Bronco, F-100, and Explorer, among many others. Always refer to the full fitment guide to confirm compatibility with your specific application.