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Dorman 43-1577 Leaf Helper Spring - Rear
Durable Leaf Helper Spring for Ford F-250 and F-350 Super Duty
The Dorman 43-1577 leaf helper spring is engineered to provide additional support and improved load capacity for your Ford F-250 Super Duty and F-350 Super Duty trucks. Constructed from high-quality steel, this black leaf spring enhances suspension strength and stability under heavy loads.
- Made from durable steel material for long-lasting performance
- Measures 41.625 inches in length, 3 inches in width, and 0.527 inches in thickness
- Increases leaf spring load capacity by 550 lbs
- Black finish for corrosion resistance and a clean appearance
- Compatible with Ford F-250 Super Duty and F-350 Super Duty models
- Part number 43-1577 for precise identification
Product Details and Specifications
The Dorman 43-1577 leaf helper spring is designed to reinforce your vehicle’s existing suspension system. Made from robust steel, it offers a thickness of 0.527 inches and a width of 3 inches, ensuring reliable support. The 41.625-inch length fits the suspension setup of Ford F-250 and F-350 Super Duty trucks, providing an additional 550 lbs of load capacity. Its black coating helps resist rust and wear, maintaining structural integrity over time. This leaf helper spring is sold as a single leaf spring without mounting hardware.
Applications and Benefits
- Supports heavy payloads and towing demands on Ford F-250 Super Duty and F-350 Super Duty trucks
- Reduces sagging and improves vehicle stability under load
- Enhances suspension performance for safer handling
- Helps prevent premature wear on primary leaf springs
- Ideal for trucks frequently carrying heavy equipment or trailers
Installation Notes and Tips
Installation of the Dorman 43-1577 leaf helper spring requires proper tools and mechanical knowledge. Since mounting hardware is not included, ensure you have the correct bolts and brackets compatible with your vehicle’s suspension. It is recommended to inspect existing leaf springs and suspension components for wear before installation. Professional installation is advised to guarantee correct fitment and safety.
Quality Assurance and Warranty
Dorman manufactures this leaf helper spring to meet or exceed OEM standards for durability and performance. The steel construction and protective black finish contribute to its longevity. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship. Verify warranty terms with the product documentation or supplier.
| Brand | Dorman |
|---|---|
| Part Number | 43-1577 |
| Material | Acero |
| Material | Steel |
| Length | 41.625 |
| Color | Black |
| Color | Negro |
| Color | Noir |
| Thickness | 0.527 |
| Leaf Spring Load Increase Strength | 550 |
| Maximum Load Rating | 550 |
| Width | 3 |
| Mounting Hardware Included | No |
| Mounting Hardware Included | Non |
| Contenidos del paquete | 1 hoja de muelle |
| Package Contents | 1 leaf spring |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 2007 | Ford | F-250 Super Duty | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity | |
| 2007 | Ford | F-350 Super Duty | Standard Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
| 2007 | Ford | F-350 Super Duty | Extended Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
| 2007 | Ford | F-350 Super Duty | Crew Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
| 2006 | Ford | F-250 Super Duty | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity | |
| 2006 | Ford | F-350 Super Duty | Standard Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
| 2006 | Ford | F-350 Super Duty | Extended Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
| 2006 | Ford | F-350 Super Duty | Crew Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
| 2005 | Ford | F-250 Super Duty | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity | |
| 2005 | Ford | F-350 Super Duty | Standard Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
| 2005 | Ford | F-350 Super Duty | Extended Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
| 2005 | Ford | F-350 Super Duty | Crew Cab Pickup | Rear | 1 Leaf; Full Taper; 1/2 In. Leaf Thickness; 550 Lb. Average Capacity; w/Single Rear Wheel (SRW) |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.