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Dorman 43-571 Leaf Spring Assembly - Rear
Durable Leaf Spring Assembly for Ford F-Series Trucks
The Dorman 43-571 leaf spring assembly is engineered to provide reliable suspension support for Ford F-100, F-150, F-250, and F-350 models. Constructed from high-quality steel with a black finish, this rear axle leaf spring assembly offers a standard replacement solution designed to restore your vehicle's ride height and load capacity.
- Constructed from durable steel material with a black finish for corrosion resistance
- Includes black bushings for smooth suspension articulation
- Standard suspension grade type suitable for everyday driving conditions
- Five-leaf configuration with 3-inch leaf width for balanced load distribution
- Designed for rear axle orientation with no axle modification required
- Load rate of 2450 lbs to support typical payloads
- Pack thickness of 1.89 inches and arch length of 6.875 inches for proper fitment
- Bushings included for direct replacement
Product Details and Specifications
The Dorman 43-571 leaf spring assembly is manufactured from high-strength steel (acero) to ensure durability and long service life. Its black powder-coated finish helps resist rust and wear from road conditions. This assembly features five leaves, each 3 inches wide, providing a balanced and stable suspension setup. The included black bushings reduce noise and vibration, enhancing ride comfort. Designed specifically for rear axle installation, this leaf spring assembly requires no axle modifications, making it a straightforward replacement for Ford F-100, F-150, F-250, and F-350 trucks. The spring pack thickness measures 1.89 inches, with an arch length of 6.875 inches, matching OEM specifications for proper suspension geometry.
Common Applications and Problem Resolution
- Restores sagging or worn rear suspension in Ford F-Series trucks
- Replaces broken or cracked leaf springs to maintain vehicle stability
- Improves load carrying capacity for trucks used in towing or hauling
- Eliminates excessive rear-end bounce and improves ride quality
- Addresses uneven tire wear caused by faulty suspension components
Installation Notes and Tips
Installation of the Dorman 43-571 leaf spring assembly is designed to be a direct replacement with no axle modifications required. Ensure the vehicle is safely supported and the rear axle is properly aligned before removing the old leaf spring. Since mounting hardware is not included, reuse existing bolts or acquire new hardware as needed. Inspect bushings and other suspension components during installation to ensure optimal performance.
Quality Assurance and Warranty
Dorman manufactures this leaf spring assembly to meet or exceed OEM standards for fit, form, and function. The steel construction and corrosion-resistant finish contribute to long-term durability. Bushings are included to provide a complete suspension solution. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in material and workmanship.
| Brand | Dorman |
| Part Number | 43-571 |
| Material | Acero |
| Material | Steel |
| Bushing Color | Black |
| Bushing Color | Negro |
| Bushing Color | Noir |
| Color | Black |
| Color | Negro |
| Color | Noir |
| Load Rate | 2450 |
| Suspension Grade Type | Reemplazo estándar |
| Suspension Grade Type | Standard |
| Leaf Quantity | 5 |
| Leaf Width | 3 |
| Axle Orientation | Arrière |
| Axle Orientation | Rear |
| Axle Orientation | Trasero |
| Helper Spring | No |
| Helper Spring | Non |
| Axle Modification Needed | No |
| Axle Modification Needed | Non |
| Bushings Included | Oui |
| Bushings Included | Sí |
| Bushings Included | Yes |
| Mounting Hardware Included | No |
| Mounting Hardware Included | Non |
| Length Axis 1 | 24 |
| Length Axis 2 | 24 |
| Pack Thickness | 1.89 |
| Leaf Spring Arch Length | 6.875 |
| Spring Research Institute Number | 43-571 |
This part fits 38 vehicles. Search below:
| Year | Make | Model | Body Type | Drive Type | Position | Notes |
|---|---|---|---|---|---|---|
| 1979 | Ford | F-150 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1979 | Ford | F-250 | Standard Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1979 | Ford | F-250 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1979 | Ford | F-250 | Cab & Chassis | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1979 | Ford | F-250 | 4WD | Rear | 5 Leaf; 3.0 In. Spring Width; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity; From Serial No. Y20001 | |
| 1979 | Ford | F-350 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1979 | Ford | F-350 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1978 | Ford | F-150 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1978 | Ford | F-250 | Standard Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1978 | Ford | F-250 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1978 | Ford | F-250 | Cab & Chassis | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1978 | Ford | F-250 | 4WD | Rear | 5 Leaf; 3.0 In. Spring Width; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity; From Serial No. Y20001 | |
| 1978 | Ford | F-350 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1977 | Ford | F-150 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1977 | Ford | F-250 | Standard Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1977 | Ford | F-250 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1977 | Ford | F-250 | Cab & Chassis | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1977 | Ford | F-250 | 4WD | Rear | 5 Leaf; 3.0 In. Spring Width; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity; From Serial No. Y20001 | |
| 1977 | Ford | F-350 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1976 | Ford | F-100 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1976 | Ford | F-150 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1976 | Ford | F-250 | Standard Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1976 | Ford | F-250 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1976 | Ford | F-250 | Cab & Chassis | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1976 | Ford | F-250 | 4WD | Rear | 5 Leaf; 3.0 In. Spring Width; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity; From Serial No. Y20001 | |
| 1976 | Ford | F-350 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1975 | Ford | F-100 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1975 | Ford | F-250 | Standard Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1975 | Ford | F-250 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1975 | Ford | F-250 | Cab & Chassis | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1975 | Ford | F-250 | 4WD | Rear | 5 Leaf; 3.0 In. Spring Width; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity; From Serial No. Y20001 | |
| 1975 | Ford | F-350 | Extended Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1974 | Ford | F-100 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1974 | Ford | F-250 | Standard Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1974 | Ford | F-250 | 4WD | Rear | 5 Leaf; 3.0 In. Spring Width; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity; From Serial No. Y20001 | |
| 1973 | Ford | F-100 | 4WD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity | |
| 1973 | Ford | F-250 | Standard Cab Pickup | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity |
| 1973 | Ford | F-250 | 4WD | Rear | 5 Leaf; 3.0 In. Spring Width; 1.875 In. Pack Thickness; 2,450 Lb. Average Capacity; From Serial No. Y20001 |
* 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.