Enginetech BC378J.50 is a 0.50mm undersize main bearing set for 1980-1985 Chevy, GMC, Jeep, Buick 2.8L 173ci V6 engines.
Important Notes:
- Sized for crankshaft main journals machined .50mm undersize. Measure journal diameter before installation - installing on the wrong journal size will cause immediate clearance failure.
- Always replace main bearings as a complete set. Never mix new bearings with used bearings - uneven wear and clearance differences will cause premature failure.
- W/small diameter main journal.
| Part Number | BC378J.50 |
| Bearing Size | 0.50mm Undersize |
| Quantity Per Set | 4 main bearings per set |
| Engine | 2.8L 173ci V6 |
| Year Range | 1980-1985 |
| Makes | Buick, Cadillac, Chevrolet, GMC, Jeep, Oldsmobile, Pontiac |
| Country of Origin | IL |
| Weight | 1.25 lbs |
| UPC | 707473000000 |
| OEM Cross-Refs | ACL:4M1494P, Clevite:MS-2276A, FEL-PRO:5090M, King Engine Bearings:MB427AM, MAHLE:MS-1494P |
Complete main bearing set covering all main journals for the V6 application - one set required per engine.
Fitment:
- 1980-1980 Buick Skylark 2.8L 173ci V6
- 1980-1980 Chevrolet Citation 2.8L 173ci V6
- 1980-1980 Oldsmobile Omega 2.8L 173ci V6
- 1980-1980 Pontiac Phoenix 2.8L 173ci V6
- 1981-1983 Chevrolet Citation 2.8L 173ci V6
- 1981-1984 Oldsmobile Omega 2.8L 173ci V6
- 1981-1984 Pontiac Phoenix 2.8L 173ci V6
- 1981-1985 Buick Skylark 2.8L 173ci V6
- 1982-1984 Buick Skylark 2.8L 173ci V6
- 1982-1984 Chevrolet Camaro 2.8L 173ci V6
- 1982-1984 Oldsmobile Omega 2.8L 173ci V6
- 1982-1984 Pontiac Firebird 2.8L 173ci V6
- 1982-1984 Pontiac Phoenix 2.8L 173ci V6
- 1982-1985 Chevrolet Celebrity 2.8L 173ci V6
- 1982-1985 Chevrolet S10 2.8L 173ci V6
- 1982-1985 GMC S15 2.8L 173ci V6
- 1982-1985 Pontiac 6000 2.8L 173ci V6
- 1983-1984 Pontiac 6000 2.8L 173ci V6
- 1983-1984 Pontiac Firebird 2.8L 173ci V6
- 1983-1985 Chevrolet S10 Blazer 2.8L 173ci V6
- 1983-1985 GMC S15 Jimmy 2.8L 173ci V6
- 1984-1984 Chevrolet Celebrity 2.8L 173ci V6
- 1984-1984 Chevrolet Citation II 2.8L 173ci V6
- 1984-1985 Chevrolet Citation II 2.8L 173ci V6
- 1984-1985 Jeep Cherokee 2.8L 173ci V6
- 1984-1985 Jeep Wagoneer 2.8L 173ci V6
- 1985-1985 Buick Skylark 2.8L 173ci V6
- 1985-1985 Cadillac Cimarron 2.8L 173ci V6
- 1985-1985 Chevrolet Camaro 2.8L 173ci V6
- 1985-1985 Chevrolet Cavalier 2.8L 173ci V6
- ...and 6 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.
