![BC140J030 Main Bearing Set for 1959-1966 Buick 6.6L, 7.0L [+0.030 in. Oversize]](https://www.jegs.com/images/mini_750/400/416/416-bc140j030.jpg)
BC140J030 Main Bearing Set for 1959-1966 Buick 6.6L, 7.0L [+0.030 in. Oversize]
Size :
The Enginetech BC140J030 is a main bearing set for 1959-1966 Buick 6.6L, 7.0L.030 in. Oversize. Engineered to maintain proper crankshaft clearance and oil film.
Enginetech BC140J030 Main Bearing Set Features:
- Fitment: GM/Buick, 401 ci, 425 ci
- Size: +0.030 in. Oversize
- Engineered to OE specifications for direct replacement
Precision Bearing Support for Smooth, Reliable Engine Operation
Enginetech Main Bearings are engineered to provide stable crankshaft support and consistent rotation, helping maintain proper oil clearance and long-term engine durability. Backed by Enginetech’s reputation as a trusted supplier to professional engine builders, these bearings are manufactured using advanced materials such as aluminum-silicon alloys and traditional copper-based designs to balance load capacity, wear resistance, and anti-friction performance. Designed with precision machining and optimized crush characteristics, they help ensure proper seating, heat transfer, and resistance to bearing rotation under demanding conditions. Available in standard and multiple undersizes for rebuild applications, Enginetech main bearings provide reliable fitment, improved durability, and consistent performance for a wide range of domestic and import engines.
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