Federal Mogul 7148M50MM Engine Crankshaft Main Bearing Set Undersize - 0.50mm

The Federal Mogul (Sealed Power) 7148M is a complete engine crankshaft main bearing set engineered for precision fit and long-term durability. This set is supplied in a 0.50mm undersize specification, designed for use with crankshafts that have been reground to restore proper journal geometry and oil clearances during an engine rebuild.

Manufactured under the trusted Sealed Power brand — a Federal Mogul product line with decades of OEM and aftermarket bearing expertise — these main bearings are built to tight tolerances and designed to deliver reliable oil film support, reduce crankshaft wear, and maintain proper bearing crush for secure seating in the block.

Key Features:

• 0.50mm Undersize — engineered for reground crankshaft journals, restoring proper oil clearance after machining
• Precision-engineered tolerances for correct bearing crush and oil film thickness
• Steel-backed construction for structural rigidity and resistance to fretting
• Corrosion-resistant bearing material for extended service life under normal and demanding operating conditions
• Complete set — includes all main bearing shells required for a full crankshaft installation
• OEM-equivalent quality suitable for engine rebuilds and restorations

The Sealed Power 7148M main bearing set is a trusted choice for professional engine builders and serious DIY rebuilders seeking a quality, specification-correct bearing solution. Always verify crankshaft journal diameter with a micrometer before selecting bearing undersize to ensure proper oil clearance.