What does the +0.25mm sizing mean for these bearings?

The +0.25mm sizing indicates that these bearings are 0.25mm undersize compared to standard bearings. This means they are intended for use when the crankshaft journals have been machined down by 0.25mm to address wear or damage.

Are these bearings suitable for a performance build?

King Engine Bearings are known for their durable construction and are often used in performance applications. These bearings are built to handle the demands of modern engines, including turbocharged platforms like the Ecoboost.

What is the primary function of main bearings?

Main bearings support the crankshaft within the engine block. They create a low-friction surface that allows the crankshaft to rotate smoothly and maintain proper oil clearance.

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Specifications

Brand: King Engine Bearings
Part #: MB4570MC0.25
UPC: 611500630774

King Engine Bearings Ford Ecoboost 3.5L V6 (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Ford Ecoboost 3.5L V6 (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-ecoboost-3-5l-v6-size-0-25mm-main-t14-770429
Price: 92.08 USD
Availability: BackOrder

$92.08

On Backorder

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

This is a King Engine Bearings Main Bearing Set for Ford Ecoboost 3.5L V6 engines, sized +0.25mm. It's a well-built replacement for worn bearings.

Key Features

This is a King Engine Bearings Main Bearing Set.
Designed for Ford Ecoboost 3.5L V6 engines.
Bearings are sized +0.25mm, meaning they are 0.25mm undersize.
This set includes the main bearings needed for engine assembly.

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About this part

Product Details

What you get here is a set of main bearings from King Engine Bearings, specifically sized at +0.25mm for Ford Ecoboost 3.5L V6 engines. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. When your engine's original bearings have seen better days, perhaps due to high mileage or heavy use, a fresh set like these can be a key part of a rebuild or repair.

King Engine Bearings are known for their durable construction. These particular bearings are built to handle the demands of modern engines, including the turbocharged Ecoboost platform. The +0.25mm sizing means they are intended for use when the crankshaft journals have been machined down by 0.25mm to clean up wear or damage. Using the correct undersize bearing is essential for achieving proper oil clearance and ensuring the longevity of your engine rebuild.