What does 'STD' mean for these bearings?

STD stands for standard size. This means the bearings are designed to fit crankshaft journals that are still within their original factory specifications, without any machining or grinding.

What is the 'high-performance overlay' on these bearings?

The high-performance overlay is a specialized material applied to the bearing surface. It's engineered to offer increased durability and better resistance to wear and load, which is beneficial in high-performance engines.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary bearings to replace the main bearings for the engine's crankshaft.

Specifications

Brand: King Engine Bearings
Part #: MB612XP
UPC: 611500595592

King Engine Bearings Ford ST 2.5L TURBO HYDA Main Bearing Set - Size STD

Name: King Engine Bearings Ford ST 2.5L TURBO HYDA Main Bearing Set - Size STD
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-st-2-5l-turbo-hyda-main-bearing-s-t14-472248
Price: 171.39 USD
Availability: BackOrder

$171.39

On Backorder — Expected to ship by Jun 14, 2026

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

King Engine Bearings Ford ST 2.5L TURBO HYDA Main Bearing Set - Size STD. These bearings are built with a high-performance overlay for improved durability.

Key Features

This is a standard size (STD) main bearing set.
Features King's high-performance overlay for improved durability and load capacity.
Designed for Ford ST 2.5L TURBO HYDA engines.
Helps reduce friction and wear on the crankshaft journals.
Built with advanced bearing technology for engine longevity.

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About this part

Product Details

The MB612XP main bearing set from King Engine Bearings features a unique high-performance overlay. This overlay is designed to provide increased durability and better load-carrying capacity, which is crucial for the demanding environment inside a performance engine like the Ford ST 2.5L TURBO HYDA. These bearings are a standard size, meaning they are intended for engines where the crankshaft journals are still within their original factory specifications.

King Engine Bearings is known for its focus on materials and construction. The MB612XP set utilizes advanced bearing technology to help reduce friction and wear, contributing to the overall health and longevity of your engine. When you're rebuilding or refreshing an engine, especially one with a turbocharger, ensuring the main bearings are in top condition is essential for proper crankshaft support and oil flow.

For a successful engine build, it's important to ensure your crankshaft journals are clean and within the specified tolerances before installing these standard-size bearings. Always refer to the manufacturer's installation instructions for detailed guidance.