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Dorman 43-721 Leaf Spring Assembly - Rear
Durable Leaf Spring Assembly for Ford F-350 Rear Suspension
The Dorman 43-721 leaf spring assembly is engineered to provide reliable rear suspension support for Ford F-350 trucks. Constructed from high-quality steel with black bushings, this replacement leaf spring pack is designed to restore your vehicle's load capacity and ride stability.
- Material: Heavy-duty steel construction for strength and durability
- Color: Black finish with black bushings for corrosion resistance
- Leaf Quantity: 10 leaves with a 2.25-inch width for balanced load distribution
- Load Rate: 3225 lbs to support standard suspension requirements
- Axle Orientation: Rear, specifically designed for Ford F-350 rear suspension
- Includes bushings for direct replacement without axle modification
- Leaf Spring Arch Length: 5.25 inches for proper suspension geometry
- Pack Thickness: 3.764 inches ensuring correct fit and performance
Product Details and Specifications
The Dorman 43-721 leaf spring assembly is a standard replacement part designed to match the original equipment specifications for the Ford F-350 rear suspension. Featuring a 10-leaf pack made from durable steel, this assembly provides consistent load support with a 3225-pound load rate. The black bushings included help reduce noise and wear, while the black finish offers protection against corrosion. With a leaf width of 2.25 inches and an arch length of 5.25 inches, this leaf spring assembly maintains proper suspension geometry and ride height without requiring axle modifications.
Common Applications and Problem Solving
- Restores sagging or worn rear suspension on Ford F-350 trucks
- Replaces broken or cracked leaf springs to improve vehicle stability
- Addresses uneven ride height and poor load handling
- Eliminates excessive rear-end bounce and improves control
- Suitable for standard replacement without the need for helper springs
Installation Notes and Tips
This leaf spring assembly is designed for direct replacement on the rear axle of Ford F-350 models. No axle modifications are necessary, and the included bushings simplify installation. It is recommended to inspect mounting hardware separately as it is not included. Proper torque specifications should be followed during installation to ensure safety and performance.
Quality Assurance and Warranty
Dorman manufactures the 43-721 leaf spring assembly to meet or exceed OEM standards for durability and performance. The steel construction and corrosion-resistant finish contribute to long service life. 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 | 43-721 |
| Material | Acero |
| Material | Steel |
| Bushing Color | Black |
| Bushing Color | Negro |
| Bushing Color | Noir |
| Color | Black |
| Color | Negro |
| Color | Noir |
| Load Rate | 3225 |
| Suspension Grade Type | Reemplazo estándar |
| Suspension Grade Type | Standard |
| Leaf Quantity | 10 |
| Leaf Width | 2.25 |
| 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 |
| Length Axis 2 | 26 |
| Pack Thickness | 3.764 |
| Leaf Spring Arch Length | 5.25 |
| Spring Research Institute Number | 43-721 |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 1997 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1996 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1995 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1994 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1993 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1992 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1991 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1990 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1989 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1988 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1987 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1986 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1985 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1984 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1983 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1982 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1981 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
| 1980 | Ford | F-350 | Cab & Chassis | Rear | 10 Leaf; 3.75 In. Pack Thickness; 3,225 Lb. Average Capacity; w/Dual Rear Wheels (DRW) |
* 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.