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Dorman 43-1231 Leaf Spring Assembly - Rear
Durable Leaf Spring Assembly for Ford F-Series Trucks
The Dorman 43-1231 leaf spring assembly is engineered to provide reliable suspension support for Ford F-150, F-150 Heritage, and F-250 models. Constructed from high-quality steel with a black finish, this rear axle leaf spring assembly offers a standard replacement option designed to restore your vehicle's ride height and load capacity.
- Made from durable steel material with a black corrosion-resistant coating
- Includes four leaves with a 2.5-inch width for balanced load distribution
- Standard suspension grade type suitable for replacement applications
- Black bushings included to reduce noise and vibration
- Designed for rear axle orientation with no axle modification required
- Load rate of 1900 lbs to support typical payloads
- Leaf spring arch length of 8.125 inches and pack thickness of 1.943 inches
Technical Details and Construction
The Dorman 43-1231 leaf spring assembly features a four-leaf pack constructed from high-strength steel, ensuring durability and consistent performance under load. The black bushings included with this assembly help minimize suspension noise and provide smoother articulation. With a load rate of 1900 pounds, this leaf spring assembly is designed to maintain proper ride height and suspension geometry for Ford F-150, F-150 Heritage, and F-250 trucks. The assembly measures 26.375 inches in length along both axes, with a pack thickness of just under 2 inches, making it a direct replacement that requires no axle modifications.
Compatible Vehicles and Applications
This leaf spring assembly is compatible with the following Ford models:
- Ford F-150
- Ford F-150 Heritage
- Ford F-250
It is intended for rear suspension use and serves as a standard replacement part to restore suspension performance and vehicle stability.
Common Suspension Issues Addressed
- Sagging or lowered rear suspension height
- Uneven or unstable ride quality under load
- Excessive suspension noise or vibration due to worn bushings
- Reduced load carrying capacity affecting vehicle handling
- Leaf spring fatigue or cracking from extended use
Installation Notes and Tips
Installation of the Dorman 43-1231 leaf spring assembly requires standard suspension tools and mechanical knowledge. Since mounting hardware is not included, ensure you have the appropriate bolts and fasteners on hand. No axle modifications are necessary, simplifying the replacement process. It is recommended to inspect related suspension components during installation for wear or damage.
Quality Assurance and Warranty
Dorman manufactures this leaf spring assembly to meet or exceed OEM specifications for material and performance. The steel construction and included bushings contribute to long-lasting durability. 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 | 43-1231 |
| Material | Acero |
| Material | Steel |
| Bushing Color | Black |
| Bushing Color | Negro |
| Bushing Color | Noir |
| Color | Black |
| Color | Negro |
| Color | Noir |
| Load Rate | 1900 |
| Suspension Grade Type | Reemplazo estándar |
| Suspension Grade Type | Standard |
| Leaf Quantity | 4 |
| 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 | 26.375 |
| Length Axis 2 | 26.375 |
| Pack Thickness | 1.943 |
| Leaf Spring Arch Length | 8.125 |
| Spring Research Institute Number | 43-1231 |
This part fits 30 vehicles. Search below:
| Year | Make | Model | Submodel | Body Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Ford | F-150 Heritage | XL | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 2004 | Ford | F-150 Heritage | XLT | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 2003 | Ford | F-150 | XL | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 2003 | Ford | F-150 | XLT | Standard Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2003 | Ford | F-150 | XLT | Extended Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2003 | Ford | F-150 | King Ranch | Extended Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2003 | Ford | F-150 | Lariat | Extended Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2002 | Ford | F-150 | XL | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 2002 | Ford | F-150 | XLT | Standard Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2002 | Ford | F-150 | XLT | Extended Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2002 | Ford | F-150 | King Ranch | Extended Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2002 | Ford | F-150 | Lariat | Extended Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2001 | Ford | F-150 | XL | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 2001 | Ford | F-150 | XLT | Standard Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2001 | Ford | F-150 | XLT | Extended Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2001 | Ford | F-150 | Lariat | Standard Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2001 | Ford | F-150 | Lariat | Extended Cab Pickup | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity |
| 2000 | Ford | F-150 | Base | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 2000 | Ford | F-150 | XL | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 2000 | Ford | F-150 | XLT | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 2000 | Ford | F-150 | Lariat | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 1999 | Ford | F-150 | Base | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 1999 | Ford | F-150 | XL | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 1999 | Ford | F-150 | XLT | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 1999 | Ford | F-150 | Lariat | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | |
| 1999 | Ford | F-250 | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity; Under 8,500 Lb. GVW | ||
| 1998 | Ford | F-150 | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | ||
| 1998 | Ford | F-250 | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity; Under 8,500 Lb. GVW | ||
| 1997 | Ford | F-150 | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity | ||
| 1997 | Ford | F-250 | Rear | 3 Leaf / 1 Leaf = 4 Leaf Spring; 1.9375 In. Pack Thickness; 1,900 Lb. Average Capacity; Under 8,500 Lb. GVW |
* 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.