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King Engine Bearings MB556SI040 Main Bearing Set Chevrolet 396-502 Gen IV V VI Silicon Aluminum

(Chevrolet Camaro 1967-72, Corvette 1965-74, Impala 1965-76, Malibu 1965-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74 + 110 more models)

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB556SI040
8 reviews
Sale Price

$32.98

3 left at this price

delivery box

Usually delivered within 2 days

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Product Details

The King Engine Bearings MB556SI040 is a complete main bearing set designed for Chevrolet 396–502 cubic inch Big Block engines across Generation IV, V, and VI applications. Engineered to OE tolerances, this set delivers reliable performance and long service life in a wide range of street and performance rebuilds.

Material Construction:

  • Bi-Metal Silicon Aluminum — An aluminum-based bearing material strengthened with 2.5–3% silicon content
  • Well-suited for medium-load engine applications
  • Compatible with nodular cast iron crankshafts
  • Silicon aluminum alloy provides excellent conformability and resistance to fatigue

Key Features:

  • Oversized by 0.040" (1.00mm) for use with reground or undersized crankshaft journals
  • Complete main bearing set for Chevrolet Big Block Gen IV, V, and VI engines
  • Manufactured to tight dimensional tolerances for consistent oil film thickness
  • King's bi-metal construction balances strength and embedability for dependable engine protection

The MB556SI040 is an ideal choice for engine builders seeking a quality, cost-effective main bearing solution for Chevrolet 396, 402, 427, 454, 496, and 502 cubic inch Big Block rebuilds where a 0.040" undersize is required.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1965-74, Impala 1965-76, Malibu 1965-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74, C10 Pickup 1966-74, Caprice 1966-76, C10 1975-80, El Camino 1966-75, Monte Carlo 1970-75 + 105 more models

Bearing Material

Bi-metal, silicon aluminum

Bearing Usage

Direct replacement

Groove Location

Upper

Groove Style

1/2

Grooved Bearing

Yes

Notes

Designed for marine applications only.

Quantity

Sold as a set of 5.

Material

bimetal (aluminum silicon base)

Flange Oversize

FL ON MAX

Undersize

040

Prop 65

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

Title

King Bearings

Easy to find the part that I needed and easy to place the order.

Best price around! I can't believe the deal I got on my part for my Jeep Cherokee. Just waiting now for it to arrive in the mail.

Great to order from shipping was fast and just awesome service will order from here again

Very speedy and in excellent shape. Easy to install and only took minutes. Autoplicity in my book is a great place to shop. <br><br>-Jason Chance<br> Cape Fair, MO

Great prices and fast delivery. I ordered my cam+springs+phaser kit for my 2007 mustang, I found the best prices with Autoplicity. Strongly recommend and most certainly purchasing here again

Great customer service. Quick and fast service. Great product knowledge

My first order and I must say, very impressive! Awesome prices and super-fast shipping direct from the manufacturer. Couldn't ask for more! I will return.

Excellent price on name brand items, best prices for Bosch oxygen sensors.

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