These rubber insulators will replace the factory plastic spring insulators that are prone to cracking and breaking. If your truck is making a clunking noise from the rear on uneven terrain or turning corners, its possible your isolators are missing. These high durometer rubber rings will stop the noise and provide a cushion for spring interaction. Unlike plastic, they are extremely durable and impervious to the environment.
Rings fit most leaf springs 3" wide and thinner. Kit includes 4 rings. Enough for 1 truck.