What does 0.25mm undersize mean for these bearings?

The 0.25mm undersize specification means these bearings are slightly smaller than standard size. They are intended for use when the engine's crankshaft has been machined down by 0.25mm to correct wear or damage. Always verify your crankshaft dimensions before ordering.

What is the construction of these main bearings?

These main bearings utilize a bimetal construction with an aluminum base. This type of material is commonly used in engine bearings for its ability to handle load and provide good wear characteristics.

Do these bearings come with installation instructions?

While these bearings are designed as direct replacements, it is always recommended to refer to the vehicle manufacturer's service manual or a professional mechanic for proper installation procedures and torque specifications.

Specifications

Brand: King Engine Bearings
Part #: MB587AM1.25
UPC: 611500174322

King Engine Bearings Nissan L20B/Z20/Z22/Z24 (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Nissan L20B/Z20/Z22/Z24 (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-nissan-l20b-z20-z22-z24-size-0-25mm-ma-t14-771032
Price: 65.23 USD
Availability: BackOrder

$65.23

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King Engine Bearings Main Bearing Set for Nissan L20B/Z20/Z22/Z24 engines. 0.25mm undersize for a precise fit during engine rebuilds.

Key Features

Fits Nissan L20B, Z20, Z22, and Z24 engines.
Main bearing set for crankshaft support during engine rebuilds.
Features a bimetal construction with an aluminum base.
Size is 0.25mm undersize, intended for use with a machined crankshaft.
Compatible with a range of Nissan vehicles including 200SX, 720, and D21.

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About this part

Product Details

When you're rebuilding the bottom end of your Nissan L20B, Z20, Z22, or Z24 engine, getting the main bearings right is crucial for smooth operation and longevity. These main bearings from King Engine Bearings are designed to be a direct replacement for a wide range of Nissan vehicles, including models like the 200SX, 720 pickup, and D21. They are essential for supporting the crankshaft and ensuring it spins freely within the engine block.

This set features a bimetal construction with an aluminum base, a well-known material for its good bearing properties. The bearings in this set are 0.25mm undersize, which is important to note if you're machining your crankshaft to match. King Engine Bearings is a popular name in engine components, and these bearings are built to meet the demands of an engine rebuild, helping to restore proper oil clearance and support.

Make sure to check your specific crankshaft dimensions to confirm compatibility with the 0.25mm undersize. Having the correct main bearings is a key step in ensuring your engine rebuild is successful and runs reliably for miles to come.