What does the '+0.25mm' size mean for these bearings?

The '+0.25mm' indicates that these bearings are 0.25 millimeters larger in diameter than standard size. This is used when the crankshaft journals have been machined down (ground undersize) and then brought back up to size with this bearing. It's crucial to match the bearing size to the machined journal size.

What is a bimetal bearing construction?

A bimetal bearing uses two different metals bonded together. In this case, it has an aluminum base layer, which is good for heat dissipation, combined with other materials to create a durable and effective bearing surface that can withstand engine operating conditions.

Do these bearings come with installation instructions?

While these bearings are designed as a direct fit replacement, it is always recommended to refer to the manufacturer's installation guidelines or a service manual for the proper procedure. This ensures correct oil clearance and installation torque.

King Engine Bearings Mazda Vc/Ub/Na/Va (Size +0.25mm) Connecting Rod Bearing Set

Specifications

Brand: King Engine Bearings
Part #: CR4159AM0.25
UPC: 611500322716

King Engine Bearings Mazda Vc/Ub/Na/Va (Size +0.25mm) Connecting Rod Bearing Set

Name: King Engine Bearings Mazda Vc/Ub/Na/Va (Size +0.25mm) Connecting Rod Bearing Set
Brand: King Engine Bearings
Price: 43.72 USD
Availability: InStock

$43.72

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Fits 1972-1976 Mazda B1600. King Engine Bearings connecting rod bearing set, 0.25mm oversize.

Key Features

Fits 1972-1976 Mazda B1600, 1972-1974 Mazda 808, 1970-1972 Mazda 616, and 1967-1970 Mazda 1500.
These are connecting rod bearings, sized 0.25mm oversize for machined crankshaft journals.
Constructed with a bimetal design featuring an aluminum base for good heat transfer.
From King Engine Bearings, a popular manufacturer of engine components.

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Product Details

If you're working on the engine for your 1972-1976 Mazda B1600, these connecting rod bearings from King Engine Bearings are a solid option. They are specifically sized at 0.25mm oversize, which is important if you've had your crankshaft journals machined to match this size during an engine rebuild. These bearings are made with a bimetal construction, meaning they have an aluminum base, which helps with heat transfer and durability.

King Engine Bearings is a well-known name in the engine component world, and these bearings are built to perform. The bimetal design is a common and effective way to create a bearing that can handle the pressures and temperatures inside an engine. When you're rebuilding an engine, getting the bearing clearances just right is critical for oil pressure and longevity, and using the correct size bearings, like these 0.25mm oversize ones, is a key part of that process.