What does the '.75' in the part number mean?

The '.75' in the part number 5M1957A-.75 indicates that these are undersize bearings. Specifically, they are 0.00075 inches smaller than standard size. This means they are intended for use with a crankshaft that has been machined down by that amount during an engine rebuild.

Are these bearings sold individually or as a set?

This is a set of crankshaft main bearings. It includes all the necessary bearings to replace the main bearings on your engine during an overhaul.

What is the purpose of main bearings in an engine?

Main bearings are critical components that support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while bearing the load of the engine's combustion forces and transferring power.

1999 Isuzu Oasis Crankshaft Main Bearing Set

Name: ACL Honda 4 1590-1958-2056cc 1988-95 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-honda-4-1590-1958-2056cc-1988-95-engine-crankshaft-main-bearing-set-t14-631118
Price: 17.84 USD
Availability: BackOrder

ACL Honda 4 1590-1958-2056cc 1988-95 Engine Crankshaft Main Bearing Set

$17.84

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1999 Isuzu Oasis. ACL crankshaft main bearing set for 1590-2056cc engines. Essential for engine rebuilds.

Key Features

Fits 1999 Isuzu Oasis.
ACL main bearing set for 1590cc to 2056cc engines (1988-1995 model years).
Part number 5M1957A-.75 indicates a 0.00075 inch undersize bearing.
Features a multi-layer overlay material for wear resistance.
Designed to support the crankshaft and maintain proper oil clearance.

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Product Details

When you're rebuilding the heart of your 1999 Isuzu Oasis, especially if you're dealing with engines in the 1590cc to 2056cc range from the 1988-1995 era, getting the crankshaft main bearings right is crucial. These ACL main bearings are a popular choice for many mechanics because they're made to handle the pressures and heat inside your engine. They sit between the crankshaft and the engine block, allowing the crank to spin smoothly while supporting the engine's weight.

ACL makes these bearings with a specific multi-layer overlay material that's designed to resist wear, even under demanding conditions. This means they can help extend the life of your engine rebuild. The .75 in the part number indicates these are an undersize bearing, meaning they're meant for a crankshaft that has been machined down by 0.00075 inches to ensure a perfect fit and proper oil clearance after a rebuild. Getting the right clearance is key for oil flow and preventing premature wear.

If you're in the middle of an engine overhaul, these bearings are a solid option to consider. Make sure you've confirmed your crankshaft has been machined to the correct undersize before ordering.