What does the '+0.75' sizing mean for these main bearings?

The '+0.75' indicates that these main bearings are 0.75mm larger in diameter than standard size. They are intended for use when the crankshaft journals have been machined down by 0.75mm during an engine rebuild to correct wear or damage.

What is the construction of these King main bearings?

These bearings utilize a bimetal construction with an aluminum base. This design is chosen for its ability to manage heat effectively and provide good wear resistance, while also allowing for proper conformity to the crankshaft.

Are these bearings suitable for all engine types in the listed vehicles?

This specific set is designed for DOHC 16 Valve, SOHC 8 Valve, and SOHC 16 Valve engine configurations found in the compatible Ford and Mazda models. Always confirm your specific engine's valve and camshaft configuration.

King Ford/Kia/Mazda DOHC 16 Valve/SOHC 8 Valve/SOHC 16 Valve (Size +0.75) Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB5537AM0.75
UPC: 611500202131

King Ford/Kia/Mazda DOHC 16 Valve/SOHC 8 Valve/SOHC 16 Valve (Size +0.75) Main Bearing Set

Name: King Ford/Kia/Mazda DOHC 16 Valve/SOHC 8 Valve/SOHC 16 Valve (Size +0.75) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-ford-kia-mazda-dohc-16-valve-sohc-8-valve-sohc-16-valv-t14-280164
Price: 45.96 USD
Availability: BackOrder

$45.96

On Backorder

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Fits 1988-1993 Ford Festiva. King main bearing set, size +0.75, for DOHC/SOHC engines. Essential for engine rebuilds.

Key Features

Fits 1988-1993 Ford Festiva, 1994-1997 Ford Aspire, 1999-2003 Mazda Protege, and 1991-1994 Mercury Capri.
Main bearing set sized at +0.75mm for use with machined crankshaft journals.
Features a bimetal construction with an aluminum base for effective heat management and wear resistance.
Designed for DOHC 16 Valve, SOHC 8 Valve, and SOHC 16 Valve engine configurations.
Part number MB5537AM0.75.

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Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your 1988-1993 Ford Festiva, or a compatible Mazda 323 or Ford Aspire, a fresh set of main bearings is crucial. These King main bearings are specifically sized at +0.75mm, meaning they're designed to fit crankshaft journals that have been machined down by 0.75mm during an engine rebuild. They feature a bimetal construction with an aluminum base, which helps manage heat and wear effectively in DOHC and SOHC engines.

King Engine Bearings is a well-known name in the performance and rebuild world, and this MB5537AM0.75 set is built to handle the demands of a refreshed engine. The aluminum base offers good embeddability and conformability, allowing the bearing to adapt to the crankshaft surface for optimal oil film support. This is important for ensuring proper oil pressure and reducing friction between the crankshaft and the engine block.

When you're putting an engine back together, using bearings that are the correct size and made with reliable materials makes a big difference in the longevity and performance of your rebuild. This set is designed to fit right and perform as expected for your specific application.