What does the +0.25mm size mean for my engine?

The +0.25mm size indicates these bearings are intended for use when the crankshaft journals have been machined down by 0.25mm. This is a common practice during engine rebuilds to clean up wear or imperfections on the crankshaft surface.

What is the XP material used in these bearings?

The XP material is a high-performance overlay developed by King Engine Bearings. It's designed to offer enhanced durability and better performance under the high stresses and heat found in performance or rebuilt engines.

Do these bearings come with installation instructions?

While these bearings are designed as a direct replacement, it is always recommended to refer to the manufacturer's installation instructions or consult a qualified mechanic for proper installation procedures and torque specifications.

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Specifications

Brand: King Engine Bearings
Part #: MB612XP0.25
UPC: 611500598166

King Engine Bearings Ford St 2.5L Turbo Hyda (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Ford St 2.5L Turbo Hyda (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-st-2-5l-turbo-hyda-size-0-25mm-ma-t14-771060
Price: 181.15 USD
Availability: BackOrder

$181.15

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King Engine Bearings Main Bearing Set MB612XP0.25 for Ford St 2.5L Turbo Hyda engines. Size +0.25mm.

Key Features

Main bearing set for Ford St 2.5L Turbo Hyda engines.
Size is +0.25mm, for use with machined crankshaft journals.
Features King's XP material for improved durability and performance.
Designed to maintain proper oil clearance and reduce friction.

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About this part

Product Details

If you're rebuilding the bottom end of your Ford St 2.5L Turbo Hyda engine, getting the main bearings right is crucial for long-term reliability. This set from King Engine Bearings is specifically made to fit those engines and comes at a +0.25mm size, meaning they are designed to be used when the crankshaft journals have been machined down by 0.25mm to clean up any wear or damage.

King Engine Bearings are known for their well-built construction. This particular set uses their XP material, which is a high-performance overlay designed for demanding applications. The material is chosen to handle the stresses and heat generated within the engine's rotating assembly, helping to ensure proper oil clearance and reduce friction. Installing these bearings correctly, with the crankshaft journals properly prepped and lubricated, is key to their performance and longevity.