1966 GMC P-Series Helper Springs
- Firestone Suspension®Coil-Rite™ Front Air Helper SpringGMC PB3500 Van 1966, Coil-Rite™ Front Replacement Air Helper Spring by Firestone Suspension®. Quantity: 1 per Pack. These air springs bellow provide adjustable spring rates far superior to the standard coil spring. This top-grade...Control the air pressure in the air helper springs for varying loads and road conditionsSpring performance can be altered as easily as inflating a tire$72.56
- Firestone Suspension®Coil-Rite™ Front Air Helper Spring KitGMC PB3500 Van With Jounce Bumpers Mounted At Bottom Of Frame Rails 1966, Coil-Rite™ Front Air Helper Spring Kit by Firestone Suspension®. Mount inside an existing open coil spring suspension. These air springs provide adjustable...Control the air pressure in the air helper springs for varying loads and road conditionsSpring performance can be altered as easily as inflating a tire$148.42
- Firestone Suspension®Ride-Rite™ Rear 224C Air Helper SpringGMC PB3500 Van With Jounce Bumpers Mounted At Bottom Of Frame Rails 1966, Ride-Rite™ Rear Replacement 224C Air Helper Spring by Firestone Suspension®. Quantity: 1 per Pack. This is replacement air spring bellow for Firestone’s...Tested to outperform all comparable products on the marketMade from premium materials to endure years of abuse$209.38
1966 GMC P-Series Models