King Engine Bearings High Performance Main Bearing Set

King Engine Bearings High Performance (HP Series) crankshaft main bearing sets are built for drag racing, monster truck, tractor pull and other high-load engine builds. Use them when you need a tougher alternative to standard OE-style bearings. They are also called engine main bearings or crank main bearings. Each set is made to support the crankshaft and keep it supported by a stable oil film under load.

Key Features:

• Alecular bi-metal construction: An aluminum-based alloy layer is bonded to a high-strength steel backing. The surface is harder than a conventional tri-metal bearing and still embeds debris well.
• Resists extrusion and material migration: The material holds up under high load for short durations or medium load for long durations.
• Lead-free material: The bearing material contains no lead.
• Improved oiling: Greater eccentricity supports oil flow at high RPM.
• Precision tolerances: King's Bull's Eye Tolerance process is designed to give consistent clearances. RadiaLock crush-height optimization helps the bearing seat securely in the housing.
• Narrowed design: Narrowed bearings can clear large crankshaft fillets.
• Multiple size options: Standard, extra-clearance and undersize options are offered across the line, so you can match your crankshaft and clearance requirements.

King has built nothing but engine bearings since 1960. The HP Series suits applications that use nodular cast iron crankshafts and builds that need more load capacity than OE-replacement bearings provide.