King Engine Bearings SI-Series Main Bearing Set Oversize

King Engine Bearings SI-Series main bearings are engine crankshaft main bearing sets for gasoline and diesel engine rebuilds. They also suit performance engines that keep the factory crankshaft. The SI-Series is recommended for OE-type applications and is made for passenger car engines with low to medium loads.

Key Features:

• Bi-metal construction: The silicon-aluminum bearing material is strengthened with silicon. It is designed for medium-load engines and nodular cast iron crankshafts.
• Improved oil clearance: Helps reduce wear and extend engine life. It also helps lower operating noise, vibration and excess oil flow.
• Crankshaft-friendly finish: Reduces microscopic ferrite peaks on improperly ground or polished nodular cast iron crankshafts.
• Direct-replacement design: Built for stock replacement and mild-performance rebuilds with a factory crankshaft.

King Engine Bearings has supplied bearings since 1960. Choose the SI-Series bearing set that matches your engine and crankshaft journal size.