ATI Super Damper SFI 18.1 Harmonic Balancer - 7.425 in OD - Black Oxide - External Balance - Big Block Chevy H76403FS 1979-1983 Chevrolet P20

1979-1983 Chevrolet P20

Jeep CJ 1972-75

MAC-1X Helmet Air Pumper

1970-1971 Pontiac GTO

6 AN Swivel to 3/8 in Quick Disconnect

ATI Super Damper SFI 18.1 Harmonic Balancer - 7.425 in OD - Black Oxide - External Balance - Big Block Chevy H76403FS 1979-1983 Chevrolet P20Product Description: Harmonic Balancer Super Damper 7. 425 in OD SFI 18. 1 Steel Black Oxide External Balance Big Block Chevy Sold Individually ATI Performance Products is a company founded on innovation, precision and service. ATI harmonic Super Dampers add horsepower and torque to race, street and truck engines. ATI Performance Products is the creation of over 40 years of Transmission and performance component manufacturing and racing experience.