My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

King Engine Bearings MB5590SI0.25 Main Bearing Set +0.25mm Oversize Bi-Metal Si-Al

(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

MB5590SI0.25
13 reviews
Sale Price

$74.64

Estimated ship date Saturday, November 21

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The King Engine Bearings MB5590SI0.25 is a +0.25mm oversize crankshaft main bearing set engineered for General Motors L40, LD2, and LF0 2.3L engines. Manufactured using King's bi-metal Silicon Aluminum (SI) construction, this set is purpose-built for medium-load engine applications and engines with nodular cast iron crankshafts.

Material & Construction:

  • Bi-Metal Silicon Aluminum — aluminum-based bearing material strengthened with 2.5–3% silicon content
  • Designed for medium-load engine applications and compatibility with nodular cast iron crankshafts
  • +0.25mm oversize bore diameter to accommodate reground or worn crankshaft journals
  • Steel-backed construction for rigidity and precise dimensional stability
  • Manufactured to OEM tolerances for reliable oil film maintenance and long service life

About King Engine Bearings:

King Engine Bearings has specialized exclusively in engine bearings since 1960, supplying high-quality main bearings, rod bearings, thrust bearings, and cam bearings for automotive, light truck, marine, and industrial applications. Every bearing passes rigorous quality control checkpoints during manufacturing to ensure consistent performance.

Cross-Reference Part Numbers:

  • ACL: 5M8511P-STD
  • Clevite: MS-1703P
  • Federal Mogul: 7054MA

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

Material

bimetal (aluminum silicon base)

Flange Oversize

FL ON MAX

Undersize

0.25

They had the lowest price on the web and carried the part I needed. They used amazon. Heck out so it was super easy to place the order and the part shipped right away. Will definitely order from again.

Nice easy part searches; fast and accurate results.

Quick simple and easy. Had no issues with this order so far

Great price

Great pricing on hard to find products. Fast processing and shipping.

Always really great prices from these guys. Believe me, I always look around and always come back to autoplicity. I ordered a super heavy part and shipping was very reasonable. This is my 5th order with these guys. Very happy customer.

Fast, and easy!

Anxious to try your product

I just wish there would have been a picture in the description.

just want to make sure I got the right ones.

Good transaction.

I had never heard of Autoplicity prior to this purchase, so I was a little hesitant to order from them. Man I am glad that I did!! Not only did they have the lowest price (by FAR) on the product I was looking for, but it showed up to my doorstep just TWO days after placing my order!! Autoplicity is awesome and will definitely be getting future business from me!!

Great Price!!!! Nobody beats their price an free shipping.......psshhh

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy