What is the benefit of a bimetal bearing construction?

Bimetal bearings, like these with an aluminum base, offer a good balance of strength and conformability. The aluminum provides a solid foundation, while the bearing surface can adapt slightly to the crankshaft journal, helping to maintain consistent oil film and reduce wear.

Are these bearings sold individually or as a set?

This is a connecting rod bearing set, meaning it includes all the necessary bearings for the connecting rods on the specified engine configurations. You will receive a complete set for your engine's connecting rods.

Specifications

Brand: King Engine Bearings
Part #: CR4105AM1.0
UPC: 611500224843

King Engine Bearings Mazda FS-DE L4/FP L4/FS L4 DOHC 16 Valve (Size +1.0) Rod Bearing Set

Name: King Engine Bearings Mazda FS-DE L4/FP L4/FS L4 DOHC 16 Valve (Size +1.0) Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mazda-fs-de-l4-fp-l4-fs-l4-dohc-16-val-t14-280105
Price: 32.08 USD
Availability: BackOrder

$32.08

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Fits 1994-2005 Mazda Miata. King Engine Bearings bimetal rod bearing set, size +1.0, for rebuilding your engine.

Key Features

Fits 1994-1997 and 1999-2005 Mazda Miata.
Bimetal construction with an aluminum base for durability and conformability.
Rod bearing set sized +1.0, intended for use with machined crankshaft journals.
Designed for Mazda FS-DE L4, FP L4, and FS L4 DOHC 16-valve engines.
Compatible with various Mazda 626, MX-6, and Protege models.

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About this part

Product Details

Built with a bimetal construction, featuring an aluminum base, this connecting rod bearing set from King Engine Bearings is designed for Mazda engines. Specifically, these bearings are sized +1.0, meaning they are intended for use when the crankshaft journals have been machined down by 0.001 inches to account for wear or to achieve a specific clearance. This set is a key component for anyone rebuilding or refreshing the bottom end of their engine, ensuring proper oil clearance and smooth operation between the connecting rod and crankshaft.

These bearings are a solid option for the Mazda 626, MX-6, Protege, and most notably, the Miata models from 1993 through 2005 (with specific year breaks for the Miata). The bimetal design offers good conformability to the crankshaft journal while maintaining strength, which is crucial for handling the loads experienced during combustion and power delivery. When installing, always ensure the crankshaft journals are clean and within the specified machining tolerance for the +1.0 size to achieve optimal performance and longevity.