The Dayton Parts Rear Leaf Spring for Kenworth / Peterbilt is a high-quality replacement part designed to meet or exceed OEM specifications. With a spring width of 3.00" and 11 leaves, this multi-leaf spring has a spring pack thickness of 4.62" and a spring capacity at pad of 38,000 lbs. This ensures that it will perform safely and reliably under all driving conditions. This leaf spring is specifically designed for Peterbilt applications and is made from durable materials to withstand heavy loads and constant use. It is a perfect replacement for worn or damaged rear leaf springs and will help restore the smooth ride and handling of your vehicle. With its superior quality and reliable performance, the rear leaf spring is a smart investment for any truck owner. FleetPride is your First Click in Heavy Duty®.