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 MB5257SI.026 Main Bearing Set for GM 379 V8

(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)

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 MB4102SI0.25 King Engine Bearings MB5280SI0.5 King Engine Bearings MB5770SI0.25

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB5257SI.026
14 reviews
Sale Price

$65.87

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 MB5257SI.026 is a precision-engineered main bearing set designed specifically for General Motors 379 cubic inch V8 overhead valve engines. This complete bearing set provides reliable protection for your engine's crankshaft and block interface during operation.

Material Construction:

  • Bi-metal silicon aluminum construction for enhanced durability
  • Aluminum-based material strengthened with 2.5-3% silicon content
  • Optimized for medium load engine applications
  • Compatible with nodular cast iron crankshafts
  • 026 oversize for precision fitment on machined journals

King Engine Bearings are manufactured to exacting tolerances to ensure proper oil clearances and optimal bearing crush. The silicon-aluminum alloy provides excellent wear resistance and conformability, making these bearings ideal for street performance and standard replacement applications on GM 379 V8 engines.

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

.026

Title

King Bearings

Prop 65

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

vert simple.

Best price I could find, and free shipping. ..I am hoping to get the tank soon

Quick & good price

Good price

Shopping here was a breeze.. Information was clear and helpful. I will definitely consider shopping here in the future.

Excellent price, quick shipment, and recommended to anyone! They have the cheapest prices on the web! Period!

So far so good

Ticketyboo

ASAP tracking

Hope I get the parts I expect some of the description is hard to interpret.

Quick & Easy, very fast delivery.

easy so far

good so far. just placed order

Loved it

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