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Dorman 43-591 Leaf Spring Assembly - Rear
Durable Leaf Spring Assembly for Ford F-100 and F-150
The Dorman 43-591 leaf spring assembly is engineered to restore the rear suspension performance of your Ford F-100 or F-150. Constructed from high-quality steel with black bushings, this replacement part offers reliable support and consistent load handling for your vehicle.
- Constructed from durable steel material for long-lasting strength
- Includes black bushings for smooth suspension operation
- Standard replacement grade suspension component
- Five-leaf pack with 2.5-inch leaf width and 1.821-inch pack thickness
- Designed for rear axle orientation with no axle modification required
- Load rate of 1650 lbs suitable for typical Ford F-100 and F-150 applications
- Leaf spring arch length measures 7.375 inches for proper fitment
Detailed Description of Dorman Leaf Spring Assembly 43-591
This leaf spring assembly is designed specifically for rear suspension use on Ford F-100 and F-150 trucks. The five-leaf pack configuration provides balanced support and ride quality, while the steel construction ensures durability under load. The black bushings included help reduce noise and vibration, contributing to a smoother driving experience. With a load rate of 1650 lbs, this assembly meets standard replacement suspension requirements without the need for axle modifications or helper springs.
Common Applications and Problem Solving
- Restores sagging or worn rear suspension springs on Ford F-100 and F-150
- Addresses uneven ride height or poor load handling
- Replaces broken or cracked leaf springs to improve vehicle stability
- Eliminates excessive rear-end bounce or sway
- Supports proper axle alignment and suspension geometry
Installation Notes and Tips
Installation of the Dorman 43-591 leaf spring assembly requires standard suspension tools and mechanical knowledge. No axle modifications are necessary, simplifying the replacement process. Ensure the vehicle is safely supported and the old leaf springs are fully removed before installing the new assembly. Verify that the bushings are properly seated and torque all mounting hardware to manufacturer specifications.
Quality Assurance and Warranty
Dorman manufactures this leaf spring assembly to meet or exceed OEM standards for material and performance. The steel construction and included bushings are designed for durability and consistent operation. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship.
| Brand | Dorman |
|---|---|
| Part Number | 43-591 |
| Material | Acero |
| Material | Steel |
| Bushing Color | Black |
| Bushing Color | Negro |
| Bushing Color | Noir |
| Color | Black |
| Color | Negro |
| Color | Noir |
| Load Rate | 1650 |
| Suspension Grade Type | Reemplazo estándar |
| Suspension Grade Type | Standard |
| Leaf Quantity | 5 |
| Leaf Width | 2.5 |
| 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 | 1.821 |
| Leaf Spring Arch Length | 7.375 |
| Spring Research Institute Number | 43-591 |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1979 | Ford | F-100 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1979 | Ford | F-150 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1978 | Ford | F-100 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1978 | Ford | F-150 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1977 | Ford | F-100 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1977 | Ford | F-150 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1976 | Ford | F-100 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1976 | Ford | F-150 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1975 | Ford | F-100 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1975 | Ford | F-150 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1974 | Ford | F-100 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
| 1973 | Ford | F-100 | RWD | Rear | 4 Leaf / 1 Leaf = 5 Leaf Spring; 1.875 In. Pack Thickness; 1,650 Lb. Average Capacity |
* 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.