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 MB5590SI1.0 Main Bearing Set GM - L40 LD2 LF0 2.3L

(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)

Part of: King Engine Bearings Main Bearing Set Oversize

Other options in this family: King Engine Bearings MB5835SI0.5 King Engine Bearings MB5557SI0.75 King Engine Bearings MB5280SI0.5 King Engine Bearings MB5770SI0.25 King Engine Bearings MB5845SI

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB5590SI1.0
13 reviews
Sale Price

$74.64

Estimated ship date Sunday, November 22

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 MB5590SI1.0 is a complete main bearing set engineered for General Motors 2.3L engines, including the L40, LD2, and LF0 engine families. Manufactured to OEM tolerances, this set ensures proper oil film retention, quiet operation, and long service life in both stock and performance rebuilds.

Material Construction:

  • Bi-Metal Silicon Aluminum — an aluminum-based alloy strengthened with 2.5–3% silicon content
  • Optimized for medium load engines and nodular cast iron crankshafts
  • Silicon aluminum offers excellent conformability, embeddability, and corrosion resistance
  • Provides a reliable bearing surface that protects crankshaft journals during startup and operation

Key Features:

  • Manufactured to precise thickness tolerances for consistent oil clearances
  • King's proprietary overlay enhances wear resistance and break-in performance
  • Designed as a direct replacement for OEM main bearings
  • 1.0mm oversized — suitable for crankshafts that have been ground 1.0mm undersize

King Engine Bearings is a globally recognized manufacturer trusted by OEM suppliers and professional engine builders alike. The MB5590SI1.0 is the correct choice when rebuilding GM 2.3L engines requiring a 1.0mm oversize main bearing set with a silicon aluminum bi-metal construction.

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

Undersize

1.0

Flange Oversize

FL ON MAX

Material

bimetal (aluminum silicon base)

It was quick and straight to the point without a whole lot of dialogue.

It was easy too shop and purchase

good

Better than average prices and easy to order.beats driving all over town looking

THe product is fantastic. My 03 Tacoma feels as tight as it felt back on 03 when is was brand new. Thank you for a great product and prices. I will be back to you when needs arise .

Easy transaction

quick, easy, good coupon code.

Great prices.

Okay

Liked the Amazon check out option

Easy and perfect

Best price. Best shipping rates.

Fast shipping and saved $60 on a $399 item. However you have to verify your part #'s with the vendor. The part discription on autoplicity sometimes is not what you get. I ordered an item that said it was an O2 plug and bung but when it showed up it was just the bung plug sold separate and customer service basically said it was my bad for not checking for a more accurate discription on the Allstar web site.

Share icon
Return Policy
Returns are easy at THMotorsports

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