Sealed Power Engine Crankshaft Main Bearing Set P/N:7321MA
$165.99
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Support the crankshaft and hold precise oil clearance with the Sealed Power engine crankshaft main bearing set 7321MA. It's a direct-fit replacement for many vehicles, among them the 1997-1999 Chevrolet Malibu, 1996-2002 Chevrolet Cavalier and 1996-2002 Pontiac Sunfire — see the Buyer's Guide tab for the full list of applications and engines. These crankshaft main bearings seat between the block's main saddles and the rotating crank journals, providing the low-friction bearing surface the oil film rides on.
Made with silicon: provides greater surface hardness.
Exacting tolerances: designed to help reduce bearing wear.
OE-level build: meets or exceeds OEM specifications.
If worn main bearings are behind low oil pressure, a deep knocking noise, or excessive crankshaft play, this application-specific set replaces them during an engine rebuild or reseal.
This part cross-references / interchanges with the following part numbers:
MS2056A, MS2056P, BC504JSTD, MB5367SI, BM26-170-S
Frequently Asked Questions
What does a crankshaft main bearing set do?
The main bearings sit between the engine block's main saddles and the crankshaft journals, giving the rotating crank a low-friction surface and maintaining the oil clearance the oil film needs.
What vehicles does the Sealed Power 7321MA fit?
It fits many vehicles, among them the 1997-1999 Chevrolet Malibu, 1996-2002 Chevrolet Cavalier and 1996-2002 Pontiac Sunfire. Check the Buyer's Guide tab for the full list and engines.
What are the bearings made of?
They use an A-Series bi-metal aluminum alloy made with silicon for greater surface hardness, offering greater seizure resistance than tri-metal material.
What are signs the main bearings may need replacing?
Low oil pressure, a deep knocking noise from the lower engine, or excessive crankshaft play can be signs. Diagnose the cause before ordering, since these symptoms can have other sources.
Do these meet factory specifications?
Yes. Sealed Power builds this set to exacting tolerances, and it meets or exceeds OEM specifications. It is designed to help reduce bearing wear.
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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.
