ATI LS Harmonic Balancer 5.67 25% UD GM Y-Body RS007B0113W Provides maximum possible spark advance

Provides maximum possible spark advance while preventing damaging detonation or ''ping''

Completely external seam construction reducing pressure points and abrasion

but internally regulated to 7 PSI

use AFCO brake pads with this rotor

Voltage: 9V - 18V DC

ATI LS Harmonic Balancer 5.67 25% UD GM Y-Body RS007B0113W Provides maximum possible spark advanceProduct Description: Harmonic Balancer Serpentine Super Damper 5. 67 in OD SFI 18. 1 Aluminum Steel Black Internal Balance GM LS Series 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