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Fits Peterbilt 379 386 388 389 (1987 And Newer) Models
Forced convection design with cooling fan and heat sink
Designed to fit threaded dash air brake valves
Whelen - 5
Bolts located underneath spring-loaded twist-off top
Grand Rock - 7" x 48" Aussie 7" O.D. Chrome Exhaust Stack page10_23 Fits Peterbilt 379 386 388Grand Rock 7" x 48" Aussie 7" O. D. Chrome Exhaust Stack The Grand Rock 7" x 48" Aussie 7" O. D. Chrome Exhaust Stack (A7 48SBC) is built to make a bold statement while delivering dependable exhaust performance. Manufactured by Grand Rock, this stack features a full 7 inch outside diameter and an impressive 48 inch height, creating a tall, commanding profile that stands out on both custom show trucks and hardworking diesel rigs. The distinctive Aussie
