Sealed 4400MA 30 main bearing set for the 1990-1993 Chevrolet C1500 V8 7.4L and other vehicles supports the crankshaft as it turns in the block. Seizure resistance is greater than with tri-metal material.
A knock from the lower engine or a low oil pressure light can mean worn main bearings, though a low oil level or a weak oil pump can produce the same signs, so find the cause before you replace the set.
As a main bearing set for V8 engines, it fits the 1990-1993 Chevrolet C1500 V8 7.4L, the 1965-1969 Chevrolet Impala V8 6.5L, the 1966-1969 Impala V8 7.0L, the 1970-1972 Impala V8 6.6L, the 1970-1976 Impala V8 7.4L, the 1967-1969 Chevrolet Camaro V8 6.5L, the 1969 Camaro V8 7.0L and the 1970-1972 Camaro V8 6.6L. Owners of other Chevrolet, GMC and Pontiac models can look up their year and engine in the "Vehicles it fits" section.
One main bearing set, which matches the one set the fitment calls for per application.
Interchange: BM26-255-3 · MB3111.30
MB556SI 030 · MS829A30 · MS829P30 · BC364J030
This part cross-references / interchanges with the following part numbers:
Does the Sealed 4400MA 30 main bearing set fit the 1990-1993 Chevrolet C1500 V8 7.4L?
Yes. Sealed 4400MA 30 fits the 1990-1993 Chevrolet C1500 V8 7.4L, and the fitment calls for one set per application.
How many main bearing sets come in this Sealed Power listing?
This listing is one main bearing set, which matches the one set per application in the fitment.
What is the Sealed 4400MA 30 made from?
The Sealed 4400MA 30 uses A-Series aluminum in a bi-metal build, made with silicon for greater surface hardness.
What are the signs of worn crankshaft main bearings?
A knock from the lower engine or a low oil pressure warning light can be signs. Have the car checked promptly, because a shop has to open the engine to inspect them.
Is MS829A30 the same as this main bearing set?
Yes. MS829A30 is on the interchange list for the Sealed 4400MA 30, along with several other numbers printed at the bottom of the page.
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