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King Engine Bearings MB5590SI0.75 Main Bearing Set GM L40 LD2 LF0 2.3L Silicon Aluminum

(Pontiac Grand Prix 1990-91, Grand Am 1988-95, Sunfire 1995; Chevrolet Cavalier 1995, Beretta 1990-94; Oldsmobile Cutlass Supreme 1990-91 + 4 more models)

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB5590SI0.75
11 reviews
Sale Price

$74.52

Estimated ship date Friday, November 20

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Product Details

The King Engine Bearings MB5590SI0.75 is a main bearing set engineered for General Motors 2.3L engines, including the L40, LD2, and LF0 engine families. This set is manufactured in a 0.75mm undersize to accommodate crankshafts that have been machined or reground to factory-approved undersize specifications.

These bearings are constructed from King's Bi-Metal Silicon Aluminum material — an aluminum-based alloy strengthened with 2.5–3% silicon content. This composition is well-suited for medium-load engine applications and offers excellent compatibility with nodular cast iron crankshafts, providing reliable wear resistance and conformability under normal operating conditions.

Key Features:

  • Application-specific fit for GM L40, LD2, and LF0 2.3L engines
  • 0.75mm undersize for use with reground crankshafts
  • Bi-Metal construction: aluminum alloy overlay bonded to a steel backing
  • Silicon Aluminum material — 2.5–3% silicon content for added strength
  • Suitable for medium-load engines and nodular cast iron crankshafts
  • Manufactured by King Engine Bearings, a leading OEM and performance bearing supplier

King Engine Bearings is an ISO-certified manufacturer trusted by engine builders worldwide. The MB5590SI0.75 is an ideal choice for professional engine rebuilders looking for a precise, quality replacement main bearing set for these General Motors applications.

Products specifications

Fits

Pontiac Grand Prix 1990-91, Grand Am 1988-95, Sunfire 1995; Chevrolet Cavalier 1995, Beretta 1990-94; Oldsmobile Cutlass Supreme 1990-91, Cutlass Calais 1988-91, Calais 1987, Achieva 1992-95; Buick Skylark 1988-95

Flange Oversize

FL ON MAX

Undersize

0.75

Material

bimetal (aluminum silicon base)

thank you

easy - nice to be able to pay via amazon. Quick delivery, all as promised. Product: Titan SideKick tank. Tank and ground seem well made. Shape allows mounting with minimal interference with bed layout. My PowerTrax bed cover moves freely above the SideK

Fast shopping experience

Easy online ordering

Great Website.

So far so good...

Product was the cheapest I could find. One other store was cheaper but did not have my product in stock. Autoplicity shipped within 2 days and the product arrived as described. I am happy with my purchase and would do business with Autoplicity again. The only thing I marked them on was that I wish they shipped within 1 day instead of 2.

I am very satisfied with the shopping experience I had. Finding part was easy and I received the part very quickly.

Very fast response to order. Only place I could find the product I wanted.

So far so good

Good prices and quick shipping. Thanks!

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