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King Engine Bearings MB5257SI0.75 Main Bearing Set GM 379 V8 OHV Si-Al Bi-Metal

(GMC G2500 1983-95, Yukon 1994-97, K1500 1982-86, 1988-98, C1500 1982-86, 1988-97, K2500 1982-86, 1988-2000, Jimmy 1982-91 + 72 more models)

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB5257SI0.75
10 reviews
Sale Price

$85.18

Estimated ship date Monday, November 30

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Product Details

The King Engine Bearings MB5257SI0.75 is a complete main bearing set engineered for General Motors 379 V8 OHV engines. This set is manufactured to precise tolerances, delivering reliable crankshaft support and long service life in medium-duty applications.

Material & Construction:

  • Bi-Metal Silicon Aluminum construction — an aluminum-based alloy strengthened with 2.5–3% silicon content
  • Designed specifically for medium load engines and engines equipped with nodular cast iron crankshafts
  • Silicon aluminum material provides excellent wear resistance, conformability, and corrosion resistance
  • Bi-metal design offers a strong steel backing bonded to the bearing lining for structural integrity

Specifications:

  • Part Number: MB5257SI0.75
  • Size: +0.75mm oversize
  • Material: Bi-Metal Silicon Aluminum
  • Application: General Motors 379 V8 OHV

King Engine Bearings is a globally recognized manufacturer known for producing precision engine bearings to OEM and performance standards. The MB5257SI0.75 is an oversize bearing set, making it ideal for engine rebuilds where the crankshaft journals have been machined undersize to restore proper clearances.

Products specifications

Fits

GMC G2500 1983-95, Yukon 1994-97, K1500 1982-86, 1988-98, C1500 1982-86, 1988-97, K2500 1982-86, 1988-2000, Jimmy 1982-91, Savana 2500 1996-2002, Savana 3500 1996-2002, C3500 1982-86, 1988-2000, K2500 Suburban 1982-86, 1994-99 + 68 more models

Material

bimetal (aluminum silicon base)

Flange Oversize

FL ON MAX

Undersize

0.75

great service and fast shipping and the best prices by far

They have the best prices and very fast shipping

Quick, easy. I like the great price & free shipping. Only problem is, the item is a black, diamond-plate METAL trailer box. It was packed simply in cardboard, no protective package around it either inside the box or around the item. That's it, ite

Good

great so far,,,easy to use site

Ordered some headlight/taillight covers for my challenger, order # 10491. The covers were a brand that I like and for a cheap price for the pair! Can't beat that! I definetly recommend them for auto accessories, I know I'll be coming back :-)

Best Price I could find on this item

The part I purchased had the lowest price I could find online anywhere.. Simple transaction and fast shipping.. Ordered on a Monday and delivered by Friday..

Good prices and shipping costs.<br>They use FedEx (Yea!)<br>I'm not overjoyed w/partial shipments.

I ordered thermo tec express sleeve heat suppression for my honda s2000 through autoplicity.<br><br>I ordered it on 07/06/2012 and recieved a day later,very fast processing. Order came well packaged and competitive pricing.

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