Enginetech BC302JSTD is a standard size main bearing set for 1964-1990 Chevy, GMC, Buick, Oldsmobile 3.0L-4.1L 181-252ci V6 engines.
Important Notes:
- Standard size - for standard (unmachined) crankshaft main journals only. Measure journal diameter before installation to confirm fit.
- Always replace main bearings as a complete set. Never mix new bearings with used bearings - uneven wear and clearance differences will cause premature failure.
| Part Number | BC302JSTD |
| Bearing Size | Standard |
| Quantity Per Set | 4 main bearings per set |
| Engine | 3.0L-4.1L 181-252ci V6 |
| Year Range | 1964-1990 |
| Makes | Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac |
| Country of Origin | IL |
| Weight | 1.0 lbs |
| UPC | 707473000000 |
| OEM Cross-Refs | ACL:4M960P, FEL-PRO:4263M, King Engine Bearings:MB443AM, MAHLE:MS-960AL |
Complete main bearing set covering all main journals for the V6 application - one set required per engine.
Fitment:
- 1964-1964 Buick Sportwagon 3.7L 225ci V6
- 1964-1964 Oldsmobile F85 3.7L 225ci V6
- 1964-1965 Oldsmobile F85 3.7L 225ci V6
- 1964-1967 Buick Skylark 3.7L 225ci V6
- 1964-1967 Buick Special 3.7L 225ci V6
- 1965-1965 Oldsmobile F85 3.7L 225ci V6
- 1977-1980 Oldsmobile Starfire 3.8L 231ci V6
- 1977-1980 Pontiac Sunbird 3.8L 231ci V6
- 1977-1981 Pontiac Catalina 3.8L 231ci V6
- 1977-1985 Buick LeSabre 3.8L 231ci V6
- 1977-1985 Oldsmobile Delta 88 3.8L 231ci V6
- 1978-1978 Buick Regal 3.8L 231ci V6
- 1978-1979 Buick Century 3.2L 196ci V6
- 1978-1979 Buick Regal 3.2L 196ci V6
- 1978-1979 Buick Skylark 3.8L 231ci V6
- 1978-1979 Chevrolet Monza 3.2L 196ci V6
- 1978-1979 Oldsmobile Omega 3.8L 231ci V6
- 1978-1979 Pontiac Phoenix 3.8L 231ci V6
- 1978-1980 Buick LeSabre 3.8L 231ci V6
- 1978-1980 Buick Skyhawk 3.8L 231ci V6
- 1978-1980 Chevrolet Monza 3.8L 231ci V6
- 1978-1980 Oldsmobile Cutlass Salon 3.8L 231ci V6
- 1985-1986 Oldsmobile Cutlass Salon 3.8L 231ci V6
- 1978-1981 Buick Century 3.8L 231ci V6
- 1978-1981 Oldsmobile Cutlass 3.8L 231ci V6
- 1978-1981 Pontiac Firebird 3.8L 231ci V6
- 1978-1981 Pontiac Grand LeMans 3.8L 231ci V6
- 1978-1981 Pontiac LeMans 3.8L 231ci V6
- 1978-1982 Buick Regal 3.8L 231ci V6
- 1978-1983 Chevrolet Malibu 3.8L 231ci V6
- ...and 75 additional applications
Enginetech main bearings are engineered to OEM specifications, drawing on over 40 years of engine rebuilding expertise to deliver the precise clearance, crush, and eccentricity required for long-term durability under both stock and moderate-performance loads. Each set is application-specific: materials, wall thickness, oil clearance, and surface finish are all matched to the crankshaft main journal geometry and operating loads of the engine family it serves. Main bearings are a wear component and must be selected to match the crankshaft main journal size - bearings sized for standard journals will not seat correctly on undersize-machined journals and vice versa, so verify your journal measurement with a precision micrometer before ordering or installing. Always replace main bearings as a complete set. Mixing new bearings with used bearings produces uneven oil clearance across the crankshaft and accelerates wear on the freshly installed bearings - the small cost of a complete set is insurance against premature failure on the bearings you just paid to install. Enginetech documents every set with clear application-specific notes, journal-size designation, and cross-references so the right part lands on the bench the first time.
WARNING: This product can expose you to chemicals including lead and nickel, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
