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King Engine Bearings MB557SI030 Main Bearing Set for GM Small Block - V8

(GMC G2500 1979-95, Yukon 1992-2000, K1500 1979-86, 1988-99, C1500 1979-86, 1988-99, K2500 1979-86, 1988-2000, Jimmy 1970-91 + 225 more models)

Part of: King Engine Bearings Main Bearing Set Oversize

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

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB557SI030
9 reviews
Sale Price

$20.07

In Stock (6)

delivery box

Usually delivered within 2 days

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Product Details

The King Engine Bearings MB557SI030 main bearing set is engineered for General Motors small block V8 engines, including 262, 267, 302, 307, 327, and 350 cubic inch displacements. This precision-manufactured bearing set provides reliable crankshaft support for street performance and stock replacement applications.

Key Features:

  • Bi-metal construction with silicon aluminum alloy for enhanced durability
  • Aluminum-based material strengthened with 2.5-3% silicon content
  • Optimized for medium-load engines and nodular cast iron crankshafts
  • 0.030" oversize for worn or machined crankshafts
  • Complete main bearing set for full engine rebuild
  • Precision tolerances ensure proper oil clearance and load distribution

King Engine Bearings are manufactured to OEM specifications and beyond, making them an excellent choice for engine rebuilders and performance enthusiasts. The silicon aluminum composition offers superior conformability and embedability compared to traditional bearing materials, helping protect your crankshaft from damage while maintaining consistent oil film thickness under demanding conditions.

Products specifications

Fits

GMC G2500 1979-95, Yukon 1992-2000, K1500 1979-86, 1988-99, C1500 1979-86, 1988-99, K2500 1979-86, 1988-2000, Jimmy 1970-91, Savana 2500 1996-2002, Savana 3500 1996-2002, Savana 1500 1996-2002, C3500 1979-86, 1988-2000 + 221 more models

Bearing Material

Bi-metal, silicon aluminum

Bearing Usage

Direct replacement

Groove Location

Upper

Groove Style

1/2

Grooved Bearing

Yes

Quantity

Sold as a set of 5.

Undersize

030

Material

bimetal (aluminum silicon base)

Flange Oversize

FL ON MAX

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Title

King Bearings

this is my new home... very cool site, beat summit and jegs by $20 to $30

Great customer service. Fast order processing. Hassle free transaction.

Very fast shipping, received it Monday when I ordered it on Thursday. Thanks!

Great price and fast shipping! If your looking for quality brands at the best price available!!<br>

I found my part easily (vent visors), checkout was simple, and I was notified the very next day that my item has been sent. The price (including shipping) was way lower than anywhere else online or in town.

Autoplicity is awsome!! lowest prices.. fast shipping great customer service.. this is hard to find in todays world!!

Easy order. Like being able to buy through my amazon account.

Great service and communication. Once it was shipped, I was able to track my item. Best price I could find on the internet!! Would definitely do business with anytime.

Fantastic ! Ordered a Weather Tech Cargo Liner for my 2012 Ford Explorer. Price was $60 less here than ALL other sites on web. I was skeptical that this was going to be a counterfeit -- as the price was too good to be true. I was extremely happy to receive the genuine product as I expected in less than a week -- and for $60 less than the competitors ! GREAT VALUE and great service ! I will definitely be back !!

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