Dorman 43-1803 Leaf Spring Assembly - Rear

Durable Dorman Leaf Spring Assembly for Rear Suspension

The Dorman 43-1803 leaf spring assembly is engineered to provide reliable rear suspension support for compatible vehicles. Constructed from high-quality steel with a black finish, this assembly is designed to restore proper ride height and handling characteristics.

• Made from durable steel material for long-lasting performance
• Includes black bushings to reduce noise and vibration
• Standard replacement suspension grade for reliable support
• Consists of 9 leaves with a 3-inch width for balanced load distribution
• Load rate of 6100 lbs suitable for rear axle applications
• No axle modification required for installation
• Leaf spring arch length of 4.75 inches and pack thickness of 4.951 inches

Technical Details and Construction

This Dorman leaf spring assembly (part number 43-1803) is constructed from high-strength steel, finished in black to resist corrosion and wear. The assembly features nine individual leaves, each 3 inches wide, stacked to provide a load rate of 6100 pounds. The black bushings included help minimize suspension noise and improve ride comfort. Designed specifically for rear axle orientation, this leaf spring assembly does not require any axle modifications during installation. The arch length of 4.75 inches and pack thickness of just under 5 inches ensure proper suspension geometry and load handling.

Common Applications and Problem Resolution

• Restores sagging or worn rear suspension springs
• Improves vehicle stability and load carrying capacity
• Eliminates excessive rear-end bounce or sway
• Replaces broken or cracked leaf springs
• Addresses uneven ride height or suspension noise

Installation Notes and Tips

Installation of the Dorman 43-1803 leaf spring assembly requires no axle modifications, making it a straightforward replacement for compatible rear suspension systems. Ensure the vehicle is properly supported and the old springs are removed carefully to avoid damage to surrounding components. Although mounting hardware is not included, use OEM or equivalent hardware for secure installation. Verify the correct orientation of the leaf spring assembly before tightening all fasteners to manufacturer torque specifications.

Quality Assurance and Warranty

Dorman manufactures this leaf spring assembly to meet or exceed OEM standards for material and construction. The steel components and bushings are designed for durability and consistent performance under load. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Refer to Dorman’s official documentation for complete warranty information.