Sealed Power Engine Crankshaft Main Bearing Set P/N:4999MA
Support the crankshaft on a stable oil film with the Sealed Power Engine Crankshaft Main Bearing Set 7321MA. Main bearings cradle the crankshaft in the block and provide the low-friction surface it rides on as it rotates. This premium-grade set installs as a direct-fit replacement for the 1996-1998 Buick Skylark [L4-2.4L], 1996-2002 Chevrolet Cavalier [L4-2.4L], 1997-1999 Chevrolet Malibu [L4-2.4L], 1996-1998 Oldsmobile Achieva [L4-2.4L], 1999-2001 Oldsmobile Alero [L4-2.4L], 1996-2001 Pontiac Grand Am [L4-2.4L], and 1996-2002 Pontiac Sunfire [L4-2.4L].
Designed to help dramatically reduce or eliminate bearing wear, this set supplies fresh bearing surfaces during an engine rebuild or main-bearing service. Worn main bearings can show up as a deep knock, low oil pressure, or metal in the oil; if worn main bearings are the cause, this set replaces them. Country of origin: Mexico. Manufacturer part number 7321MA.
This part cross-references / interchanges with the following part numbers:
What does the Sealed Power 7321MA main bearing set do?
It provides the low-friction bearing surfaces that cradle the crankshaft in the engine block, letting it rotate on a film of oil.
Which vehicles does this set fit?
It fits the L4-2.4L engine in seven 1996-2002 GM models including the Pontiac Grand Am, Chevrolet Cavalier, and Buick Skylark. See the Buyer's Guide tab for the full list.
What are the bearings made of?
They use an A-Series bi-metal aluminum alloy made with silicon for greater surface hardness, offering more seizure resistance than tri-metal material.
What are signs the main bearings may need replacing?
A deep engine knock, low oil pressure, or metal particles in the oil can be signs. Diagnose the cause first; if worn main bearings are it, this set replaces them.
Where is this set made and does it meet OEM specs?
Country of origin is Mexico. It is machined to exacting tolerances and meets or exceeds OEM specifications.
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.