What does the 0.25 size mean for these main bearings?

The 0.25 size indicates that these bearings are undersized by 0.025 inches. This is used when the engine's crankshaft journals have been machined down to remove wear or imperfections. It ensures the correct oil clearance is maintained with the reduced journal diameter.

What vehicles does this main bearing set fit besides the Nissan 510?

This set is also verified to fit the 1969-1972 Nissan 521 Pickup, 1973 Nissan 610, 1972-1974 Nissan 620 Pickup, and 1974 Nissan 710. Always confirm fitment for your specific vehicle.

What is the material of these main bearings?

These are bimetal bearings, featuring an aluminum base. This construction is common and well-regarded for its performance in engine applications.

Specifications

Brand: King Engine Bearings
Part #: MB534AM0.25
UPC: 611500165214

King Engine Bearings Datsun Mitsubishi (Size 0.25) Main Bearing Set

Name: King Engine Bearings Datsun Mitsubishi (Size 0.25) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-datsun-mitsubishi-size-0-25-main-beari-t14-4330061
Price: 90.75 USD
Availability: BackOrder

$90.75

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Fits 1968-1973 Nissan 510. King Engine Bearings Main Bearing Set (Size 0.25) for Datsun L18 engines. Essential for engine rebuilds.

Key Features

Fits 1968-1973 Nissan 510.
Includes a set of main bearings for Datsun L18 engines.
Bearings are bimetal with an aluminum base.
This set is sized 0.25 undersize, intended for use with machined crankshafts.
Also fits 1969-1972 Nissan 521 Pickup, 1973 Nissan 610, 1972-1974 Nissan 620 Pickup, and 1974 Nissan 710.
Part number MB534AM0.25.

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About this part

Product Details

When you're rebuilding the bottom end of your Datsun L18 engine, you'll get a set of main bearings in this package. These are bimetal bearings, meaning they have an aluminum base, which is a common and well-built material for engine bearings. This specific set is sized 0.25, which is an undersize measurement used when the crankshaft journals have been machined down to clean them up or correct wear.

King Engine Bearings is a well-known name in engine components, and these main bearings are made to fit your specific application. They are designed for the Datsun L18 engine, and also fit a range of other Nissan vehicles from the late 60s through the mid-70s, including the 510, 521 Pickup, 610, 620 Pickup, and 710. Using the correct size bearing is critical for proper oil clearance and engine longevity.