Dorman 43-1581 Leaf Helper Spring - Rear

Durable Leaf Helper Spring for Ford F-350 Super Duty

The Dorman 43-1581 leaf helper spring is engineered to provide additional support and load capacity for your Ford F-350 Super Duty. Constructed from high-quality steel, this component enhances suspension strength and stability under heavy loads.

Key Features of Dorman Leaf Helper Spring 43-1581

• Made from durable steel (acero) for long-lasting performance
• Length of 43.25 inches and width of 3 inches for precise fitment
• Thickness of 0.558 inches to increase leaf spring load capacity
• Load increase strength and maximum load rating of 600 lbs
• Finished in black for corrosion resistance and a clean appearance
• Compatible with Ford F-350 Super Duty suspension systems

Detailed Description of the Leaf Helper Spring

The Dorman 43-1581 leaf helper spring is designed to reinforce the existing suspension leaf springs on the Ford F-350 Super Duty. Its steel construction ensures rigidity and durability, while the 0.558-inch thickness provides a significant increase in load-bearing capacity. Measuring 43.25 inches in length and 3 inches in width, this helper spring fits seamlessly alongside the factory leaf springs to improve vehicle stability and handling when carrying heavy loads. The black finish offers protection against rust and wear, extending the service life of the component.

Common Applications and Problem Solving

• Supports additional payload capacity for heavy-duty towing and hauling
• Reduces sagging and bottoming out under heavy loads
• Improves rear suspension stability and ride quality
• Helps maintain proper vehicle height and alignment
• Mitigates excessive leaf spring stress and potential damage

Installation Notes and Tips

Installation of the Dorman 43-1581 leaf helper spring requires removal of the rear leaf springs on the Ford F-350 Super Duty. Ensure the vehicle is securely lifted and supported before beginning work. This part does not include mounting hardware, so verify that existing bolts and brackets are in good condition or obtain appropriate hardware separately. Proper torque specifications should be followed to maintain safety and performance.

Quality Assurance and Warranty

Dorman manufactures the 43-1581 leaf helper spring to meet or exceed OEM standards for material and construction. The steel used provides consistent strength and durability under demanding conditions. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in material and workmanship.