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King Engine Bearings MB5212SI020 Main Bearing Set Chevy Big Block - for 396/400/427/502

(1990-1993 Chevrolet C1500 454 SS; 1966 Chevrolet Chevelle Super Sport 396; 1967-1968 Chevrolet Chevelle SS 396; 1968-1969 Chevrolet El Camino SS + 1 more model)

Part of: King Engine Bearings Main Bearing Set Chevy Big Block

Other options in this family: King Engine Bearings MB556SI030

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB5212SI020
14 reviews
Sale Price

$118.07

2 left at this price

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Usually delivered within 2 days

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Product Details

The King Engine Bearings MB5212SI020 is a precision-engineered main bearing set designed for Chevrolet big block engines including 396, 400, 427, and 502 cubic inch 16-valve configurations. This SI-Series bearing set features a 0.020 inch crankshaft undersize specification, making it ideal for engine rebuilds where the crankshaft has been machined undersize to restore proper clearances.

Key Features:

  • SI-Series bi-metal construction with silicon aluminum overlay
  • 0.020 inch undersize for machined crankshafts
  • Recommended for OE replacement and aftermarket rebuilds
  • Designed for performance engines with factory crankshafts
  • Precision manufacturing with rigorous quality control

King SI-Series main bearings are specifically engineered for OE applications and aftermarket gasoline engine rebuilding. Each bearing utilizes high-quality silicon aluminum materials and advanced manufacturing processes to ensure consistent sizing and reliable performance. Ideal for street performance applications, engine rebuilds, and restoration projects requiring precise crankshaft-to-bearing clearances.

Products specifications

Fits

1990-1993 Chevrolet C1500 454 SS; 1966 Chevrolet Chevelle Super Sport 396; 1967-1968 Chevrolet Chevelle SS 396; 1968-1969 Chevrolet El Camino SS; 1975-1979 Excalibur Phaeton Base

Price was excellent for this product(Hypertech Econ) and delivery was right on time! I will look for parts from this vendor in the future!

Awsom

Great

Great, simple shopping experience. Best price on the web.

Ordered the ARB 50QT fridge from Autoplicity b/c they had every merchant beat by more than $100. Very happy with the transaction and would highly recommend - best prices bare none. I called Auto Anything and was told they match pricing with most vendors - except Autoplicity. I can see why. My first order but not my last!

Easy shopping, good prices. Would like just a little more specific information on the item descriptions.

Best prices around and fast shipping! A+

good

Was looking online for the best price on a part and found that autoplicity had the lowest price and free shipping on it. I ordered it and it was shipped the next day along with tracking number. I will be ordering a few more parts from autoplicity. Order Number: 27769

quick and easy

Excellent payment options and no hassle.

Liked the prices a lot. Disappointed that there was no break in shipping costs when ordering multiple items.

Best Price by far and fast service and very easy because of checkout system.

the shipping charges were high, but still cheaper than any place else with free shipping!

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