What does the '.25' size designation mean for these bearings?

The '.25' in the part number, MB5128AM0.25, indicates that these bearings are 0.010 inches undersize. This means they are intended for use when the engine's crankshaft has been machined down by 0.010 inches during a rebuild to correct wear or runout.

What is the construction of these main bearings?

These main bearings feature a bimetal construction. This design utilizes an aluminum base, which is known for its good performance characteristics in bearing applications.

What vehicles does this main bearing set fit?

This main bearing set is designed for specific Isuzu engines found in vehicles such as the 1990-1993 Geo Storm, 1988 Chevrolet Nova, 1991-1992 Isuzu Impulse, 1991-1993 Isuzu Stylus, and 1990-1992 Lotus Elan.

Specifications

Brand: King Engine Bearings
Part #: MB5128AM0.25
UPC: 611500190414

King Engine Bearings Isuzu 4XE1/4XF1/4XC1T (Size .25) Main Bearing Set

Name: King Engine Bearings Isuzu 4XE1/4XF1/4XC1T (Size .25) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-isuzu-4xe1-4xf1-4xc1t-size-25-main-bea-t14-721330
Price: 50.12 USD
Availability: BackOrder

$50.12

On Backorder

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

Fits 1990-1993 Geo Storm. This is a main bearing set for Isuzu 4XE1, 4XF1, and 4XC1T engines, sized 0.010 inches undersize.

Key Features

Fits 1990-1993 Geo Storm, 1988 Chevrolet Nova, 1991-1992 Isuzu Impulse, 1991-1993 Isuzu Stylus, and 1990-1992 Lotus Elan.
This is a main bearing set for Isuzu 4XE1, 4XF1, and 4XC1T engines.
The bearings are sized 0.010 inches undersize, for use with a machined crankshaft.
Constructed with a bimetal design featuring an aluminum base.
Includes the necessary main bearings for a complete set.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

About this part

Product Details

When you're rebuilding the bottom end of your 1990-1993 Geo Storm, or any Isuzu with a 4XE1, 4XF1, or 4XC1T engine, getting the main bearings right is crucial. This set from King Engine Bearings is designed to replace your worn-out main bearings, helping to ensure proper crankshaft support and oil clearance. These bearings are built with a bimetal construction, using an aluminum base for good performance characteristics.

This particular set is sized 0.010 inches undersize, meaning it's intended for crankshafts that have been machined down by that amount during a rebuild. King Engine Bearings is a well-known name in engine components, and this set is made to fit your specific Isuzu engine application. Proper installation is key to their performance, so be sure to follow the manufacturer's guidelines for cleaning and assembly.