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Dorman 34-123 Leaf Spring Assembly - Rear
Durable Leaf Spring Assembly for Dodge B300, B350, and B3500
The Dorman 34-123 leaf spring assembly is engineered to restore suspension performance on Dodge B300, B350, and B3500 models. Constructed from high-quality steel with a black finish, this rear axle leaf spring pack offers reliable support and consistent load handling for standard replacement needs.
- Made from durable steel material with corrosion-resistant black coating
- Includes seven leaves with a 2.5-inch width for balanced load distribution
- Designed for rear axle orientation on Dodge B300, B350, and B3500
- Standard suspension grade type with a 3250 lb load rate
- Comes with black bushings included for smooth operation
- No axle modification or helper spring required for installation
- Leaf spring arch length of 5.125 inches and pack thickness of 2.765 inches
Detailed Description of Dorman Leaf Spring Assembly 34-123
This leaf spring assembly is crafted from high-strength steel to provide dependable suspension support for Dodge B300, B350, and B3500 trucks. The seven-leaf pack design with a 2.5-inch leaf width ensures even weight distribution and improved ride stability. Finished in black, the steel construction resists corrosion and wear over time. The assembly includes black bushings to reduce noise and vibration, enhancing driving comfort. With a load rate of 3250 pounds, this standard replacement spring meets OEM specifications without requiring axle modifications or additional helper springs.
Common Applications and Problem Solving
- Restores sagging or worn rear suspension on Dodge B300, B350, and B3500
- Replaces broken or cracked leaf springs to maintain vehicle stability
- Improves load carrying capacity for heavy-duty use
- Eliminates excessive rear-end bounce and improves ride quality
- Addresses uneven tire wear caused by suspension issues
Installation Notes and Tips
The Dorman 34-123 leaf spring assembly is designed for direct replacement on rear axles of compatible Dodge models without requiring axle modifications. Ensure the vehicle is properly supported and the suspension is unloaded before removal. Since mounting hardware is not included, reuse existing hardware if in good condition or source OEM-grade fasteners. Verify bushing alignment during installation to prevent premature wear.
Quality Assurance and Warranty
Dorman manufactures this leaf spring assembly to meet or exceed OEM standards for durability and performance. The steel construction and included bushings are tested for strength and longevity. 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 | 34-123 |
| Material | Acero |
| Material | Steel |
| Bushing Color | Black |
| Bushing Color | Negro |
| Bushing Color | Noir |
| Color | Black |
| Color | Negro |
| Color | Noir |
| Load Rate | 3250 |
| Suspension Grade Type | Reemplazo estándar |
| Suspension Grade Type | Standard |
| Leaf Quantity | 7 |
| 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 | 23 |
| Length Axis 2 | 23 |
| Pack Thickness | 2.765 |
| Leaf Spring Arch Length | 5.125 |
| Spring Research Institute Number | 34-123 |
This part fits 23 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1997 | Dodge | B3500 | Rear | One Piece Spring Shackle |
| 1996 | Dodge | B3500 | Rear | One Piece Spring Shackle |
| 1995 | Dodge | B3500 | Rear | One Piece Spring Shackle |
| 1994 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1993 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1992 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1991 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1990 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1989 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1988 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1987 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1986 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1985 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1984 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1983 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1982 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1981 | Dodge | B350 | Rear | One Piece Spring Shackle |
| 1980 | Dodge | B300 | Rear | One Piece Spring Shackle |
| 1979 | Dodge | B300 | Rear | One Piece Spring Shackle |
| 1978 | Dodge | B300 | Rear | One Piece Spring Shackle |
| 1977 | Dodge | B300 | Rear | One Piece Spring Shackle |
| 1976 | Dodge | B300 | Rear | One Piece Spring Shackle |
| 1975 | Dodge | B300 | Rear | One Piece Spring Shackle |
* 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.