Chevy Silverado 2012, Si-Series 5 Pairs Main Bearing Set by King Engine Bearings®. Aluminum based material, strengthen by 2.5-3% silicon, for medium load engines or nodular cast iron crankshafts. This King Engine Bearings product is professionally and meticulously designed to provide superior durability you are looking for. The company does not accept compromises when it is going about quality, so you can be completely confident that this product is 2nd to none.
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