Give your crankshaft a fresh, precise bearing surface with the Sealed Power Engine Crankshaft Main Bearing Set 7456MA20. This main bearing set supplies replacement bearings for the crankshaft main journals on a huge range of classic Ford, Lincoln, and Mercury applications — including the 1963 Ford 300, 1966-1977 Ford Bronco, 1964-1973 Ford Mustang, 1975-1996 Ford F-150, and 1996-2001 Ford Explorer. It covers 84 applications in all, so see the Buyer's Guide tab for the complete list.
The main bearings sit between the crankshaft's main journals and the engine block, carrying the pressurized oil film that keeps the crank riding on a cushion of oil rather than metal-on-metal.
- Full main bearing set: supplies the main bearings needed to service one engine's crankshaft.
- Rebuild-ready: replaces worn bearings so the crank can be set to proper running clearance during a rebuild or reseal.
- Signs of wear: low oil pressure, a deep knock at low RPM, or metal in the oil may indicate worn main bearings.
Diagnose the cause and check journal condition and clearances before installing, as bearing wear can accompany other engine issues.
Interchange: MB4549SI0.5 · Manufacturer part number 7456MA20
