Dorman 540-894 Suspension Coil Spring Insulator

The Dorman 540-894 Coil Spring Insulator is a precision-engineered replacement suspension component designed to restore proper ride quality and reduce noise, vibration, and harshness (NVH) in the suspension system. Also known as a coil spring isolator or coil spring pad, this insulator seats between the coil spring and the spring perch, cushioning the interface and preventing metal-to-metal contact.

Over time, original equipment spring insulators can crack, compress, or deteriorate due to heat, road salt, and constant load cycling — leading to suspension clunking, uneven spring seating, and a harsher ride. The Dorman 540-894 is manufactured to match OE geometry and durometer for a direct, no-modification fit.

Key Features:

• Direct OE replacement coil spring insulator
• Precision-engineered to match original equipment geometry and material specifications
• Reduces noise, vibration, and harshness (NVH) at the spring contact point
• Prevents metal-to-metal contact between the coil spring and spring seat
• Rigorously tested to meet or exceed original equipment performance standards
• Manufactured by Dorman, a trusted name in aftermarket automotive parts

Dorman is a leading aftermarket auto parts manufacturer headquartered in Colmar, Pennsylvania, with over a century of experience delivering reliable replacement solutions for both light-duty and heavy-duty vehicles. The 540-894 is sold as a single insulator — confirm quantity requirements for your application before ordering.