ATI LS Harmonic Balancer 5.67 25% UD GM Y-Body RS007B0113W 25" x 25" x 10"

25" x 25" x 10"

Voltage: 9V - 18V DC

but internally regulated to 7 PSI

1986-1987 Pontiac Firebird

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

ATI LS Harmonic Balancer 5.67 25% UD GM Y-Body RS007B0113W 25" x 25" x 10"Product 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