What does the +0.25 size mean for these main bearings?

The +0.25 size indicates that these bearings are intended for use when the engine's crankshaft has been machined down by 0.025 inches during an engine rebuild. This ensures proper oil clearance with the reduced journal diameter.

What type of engine load is this bearing set best suited for?

This bearing set is ideal for medium-load engines. Its bi-metal aluminum construction with a lead-free composite is designed to handle moderate operational demands effectively.

Are these bearings environmentally safe?

Yes, these bearings feature a lead-free composite material, making them an environmentally safe option.

Specifications

Brand: King Engine Bearings
Part #: MB5281SI0.25
UPC: 611500452680

King Engine Bearings Ford 281CI 4.6L V8 (Size +0.25) Main Bearing Set

Name: King Engine Bearings Ford 281CI 4.6L V8 (Size +0.25) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-281ci-4-6l-v8-size-0-25-main-bear-t14-4326309
Price: 56.91 USD
Availability: BackOrder

$56.91

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King Engine Bearings Ford 4.6L V8 Main Bearing Set (+0.25). Lead-free composite for medium-load engines.

Key Features

Fits 1993-2010 Ford, Lincoln, Mercury, Avanti, Panoz, and Qvale vehicles with a 4.6L V8 engine.
Main bearing set is sized +0.25 inches for use with a machined crankshaft.
Features a lead-free, environmentally safe composite material.
Constructed with a bi-metal aluminum material.
Ideal for medium-load engines.

⚠️ 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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About this part

Product Details

King Engine Bearings has been specializing in engine bearings since 1960, aiming to provide the highest quality available. This main bearing set is designed for Ford 281 cubic inch, 4.6L V8 engines and is sized at +0.25 inches, meaning it's intended for crankshafts that have been machined down by that amount during a rebuild. It fits a wide range of vehicles, including popular models like the Ford F-150, Ford Mustang, and Lincoln Continental.

This particular set features a lead-free, environmentally safe composite material. This bi-metal aluminum construction is well-suited for medium-load engines, offering reliable performance for many applications. When rebuilding an engine, using bearings that are the correct size and made from appropriate materials is crucial for proper oil clearance and long-term durability.