Sealed Power Engine Crankshaft Main Bearing Set P/N:963M 20
Sealed 963M 30 main bearing set for the 1957-1960 Mercury Colony Park V8 5.1L and other vehicles supports the crankshaft in the engine block. Also called crankshaft main bearings, the set meets or exceeds OEM specifications.
Worn main bearings can show up as low oil pressure, a knock from the bottom of the engine or metal particles in the oil. Before you replace the bearings, rule out the oil level, the oil pump and the oil pressure sender, since a low reading can come from those too.
The vehicles it fits include the 1957-1960 Mercury Commuter V8 5.1L and the 1959-1960 Mercury Country Cruiser V8 5.1L, and each takes one set. Open the "Vehicles it fits" section to check your exact model and engine.
Fit and size
Build and materials
Interchange: MS195P30
This part cross-references / interchanges with the following part numbers:
Will the Sealed 963M 30 main bearing set fit a 1957-1960 Mercury Commuter V8 5.1L?
Yes. Sealed 963M 30 fits the 1957-1960 Mercury Commuter V8 5.1L and the 1959-1960 Mercury Country Cruiser V8 5.1L. For other models, open the "Vehicles it fits" section.
What does 0.030 undersize mean on this main bearing set?
Sealed 963M 30 is 0.030 inch undersize, made for a crankshaft whose journals are ground to that size. A machine shop can confirm the journal size.
What is the lining on these main bearings made of?
This main bearing set uses a steel-backed overplated bronze alloy, known for fatigue resistance and strength.
How can I tell main bearings are wearing out?
A knock from the lower engine, low oil pressure or metal particles in the oil can be signs of worn main bearings. A shop can confirm the cause.
Does MS195P30 cross-reference to this Sealed Power main bearing set?
Yes. MS195P30 is listed as an interchange number for Sealed 963M 30.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.