Sealed Power Engine Crankshaft Main Bearing Set

Sealed Power engine crankshaft main bearing sets, also called main bearings or crank bearings, support the crankshaft in the engine block and keep it turning smoothly. A thin oil film separates the bearing surface from the journal. This reduces friction and wear and helps keep oil pressure steady across the rotating assembly. These sets are intended for engine rebuilds and overhauls.

Key Features:

• Precision-manufactured main bearing halves that fit the crankshaft journals and block bores
• Multi-layer construction with a steel backing and a bearing surface designed to resist wear and fatigue
• Oil-hole and groove designs that distribute lubrication across the journal
• Available in standard and select undersize options to suit machined crankshafts
• Backed by Sealed Power, a long-established brand in engine rebuilding components

Replacing the main bearings during a rebuild helps restore proper oil clearance and supports long engine life. Check crankshaft journal condition and measure oil clearance during installation.