Top Line Manufacturing Engine Crankshaft Main Bearing Set

The Top Line Manufacturing Engine Crankshaft Main Bearing Set is a replacement main bearing set for engine rebuilds and repairs. Main bearings (also called crankshaft bearings or crank main bearings) sit between the crankshaft journals and the engine block. They support the crankshaft as it rotates and hold a thin film of oil between the moving surfaces.

Key Features:

• Replacement main bearing set for engine overhauls and rebuilds
• Supports the crankshaft and helps reduce friction and wear between the journals and the block
• Available in multiple engine applications and bearing sizes, such as standard and undersize options, each under its own part number
• From Top Line Manufacturing, a supplier of import and domestic engine components including bearings, crankshafts and pistons

Replacing worn main bearings during a rebuild helps restore proper oil clearance and smooth crankshaft rotation. Choose the child part number that matches your engine and crankshaft journal size.