What does the '+1.0' sizing mean for these bearings?

The '+1.0' indicates that these main bearings are 0.001 inches larger in diameter than standard size. This sizing is used when the engine's main bearing journals have been machined down by 0.001 inches during an engine rebuild to remove wear or imperfections.

What is the advantage of a bimetal aluminum silicon base?

A bimetal construction typically uses a steel backing for strength and a bearing material overlay for wear resistance and compatibility with the crankshaft. The aluminum silicon alloy offers good embeddability and wear characteristics, making it suitable for the high-load environment of main bearings.

Does this set include all the main bearings needed for the engine?

Yes, this is a main bearing set, which means it contains all the necessary main bearings to replace the main bearings for the crankshaft in your Ford 4.6L V8 engine.

Specifications

Brand: King Engine Bearings
Part #: MB5281SI1.0
UPC: 611500519468

King Engine Bearings Ford 281CI 4.6L V8 (Size +1.0) Main Bearing Set

Name: King Engine Bearings Ford 281CI 4.6L V8 (Size +1.0) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-281ci-4-6l-v8-size-1-0-main-beari-t14-4326312
Price: 60.30 USD
Availability: BackOrder

$60.30

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King Engine Bearings main bearing set for Ford 281ci 4.6L V8 engines. Size +1.0. Bimetal aluminum silicon construction.

Key Features

Fits Ford 281ci 4.6L V8 engines.
Main bearing set is sized +1.0 for machined crankshafts.
Constructed with a bimetal aluminum silicon base for durability.
Designed for a wide range of Ford, Lincoln, and Mercury vehicles.
This is a main bearing set, not a connecting rod bearing set.

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About this part

Product Details

Built with a bimetal aluminum silicon base, this main bearing set from King Engine Bearings is designed for Ford 281ci 4.6L V8 engines. These bearings are a critical component for the crankshaft's smooth rotation, and this set is specifically sized at +1.0 to accommodate engines that have been machined to that specification during a rebuild. King is a well-known name in engine bearings, and this set is a solid option for anyone working on these popular Ford V8s.

This main bearing set fits a wide range of Ford, Lincoln, and Mercury vehicles, including popular models like the Ford F-150, Ford Mustang, and Lincoln Navigator. The bimetal construction offers good wear resistance and load-carrying capacity, essential for the demanding environment inside an engine. When you're rebuilding or refreshing the bottom end of your 4.6L V8, using bearings that are sized correctly and made from durable materials is key to a long-lasting engine.