What does the '+0.020 Os Od (Size +0.50mm)' mean for these bearings?

This indicates that the bearings are manufactured to be 0.020 inches (or 0.50mm) smaller than the standard factory size. This is used when the engine's crankshaft has been machined (ground) down to this specific undersize to correct wear or damage.

What is the advantage of King Engine Bearings' overlay material?

King's specialized overlay material is designed for improved wear resistance. It's applied in multiple layers, including a steel backing for strength and a bronze-aluminum alloy layer that helps with embeddability and heat dissipation.

Do these bearings come with installation instructions?

While these bearings are designed for a direct fit, it is always recommended to consult the official service manual for your specific Ford Ecoboost engine. This will provide the correct installation procedures, torque specifications, and any other necessary details.

Specifications

Brand: King Engine Bearings
Part #: MB4569MC0.5
UPC: 611500631740

King Engine Bearings Ford Ecoboost 3.5L V6 +0.020 Os Od (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Ford Ecoboost 3.5L V6 +0.020 Os Od (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-ecoboost-3-5l-v6-0-020-os-od-size-t14-770427
Price: 154.38 USD
Availability: BackOrder

$154.38

On Backorder

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King Engine Bearings 3.5L V6 Main Bearing Set MB4569MC0.5. This +0.020 inch undersize set is for Ford Ecoboost engines.

Key Features

Fits Ford 3.5L V6 Ecoboost engines.
Main bearing set is 0.020 inch (0.50mm) undersize.
Features King's specialized overlay material for improved wear resistance.
Multi-layer bearing construction with steel backing and bronze-aluminum alloy overlay.
Designed to maintain oil clearance and protect crankshaft journals.

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About this part

Product Details

This is a set of main bearings from King Engine Bearings, part number MB4569MC0.5. These bearings are specifically made to be 0.020 inches (or 0.50mm) undersize, which is important when rebuilding or repairing an engine that has had its crankshaft ground down to match this size. They are designed for Ford 3.5L V6 Ecoboost engines.

King Engine Bearings uses a specialized overlay material that offers improved wear resistance compared to standard bearings. This overlay is applied in multiple layers, with a steel backing for strength and a bronze-aluminum alloy layer for good embeddability and heat dissipation. The design helps to maintain oil clearance and protect the crankshaft journals during operation, especially in high-performance applications like the Ecoboost V6.

When installing these bearings, it's crucial to ensure the crankshaft journals are clean and within the specified size tolerance. Always refer to the manufacturer's service manual for the correct installation procedures and torque specifications for your specific Ford Ecoboost engine.