1970 – 1980 Chevrolet NOS Engine STD Crankshaft Main Bearing GM # 3977528

This new old stock engine STD crankshaft main bearing was manufactured by General Motors for use on the following models:

Chevrolet  1970-1972 All 400 engine with 2BC,

Chevrolet  1973-1976 All 400 engine,

Chevrolet  1975-1978  All, Blazer, Jimmy with  400 engine,

Chevrolet  1979-1980  K-1, 2, 3, G-2, 3 with  400 engine,

GMC  1974-1976 Sprint with 400 engine,

Use on rear position     Replaced by 12329979  To complete an engine set use 4 # 3977522 bearings

NOTE:  Images show the condition and what is included in the sale.

*This item may be re-packaged to protect it from shelf wear.