HomeSuspension > Suspension, Springs and Related ComponentsDorman 34-123 Leaf Spring Assembly - Rear
Part #: 34-123

Dorman 34-123 Leaf Spring Assembly - Rear

Rear
⚙️ 23 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Dodge, B300, B350, and B3500
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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.

BrandDorman
Part Number34-123
MaterialAcero
MaterialSteel
Bushing ColorBlack
Bushing ColorNegro
Bushing ColorNoir
ColorBlack
ColorNegro
ColorNoir
Load Rate3250
Suspension Grade TypeReemplazo estándar
Suspension Grade TypeStandard
Leaf Quantity7
Leaf Width2.5
Axle OrientationArrière
Axle OrientationRear
Axle OrientationTrasero
Helper SpringNo
Helper SpringNon
Axle Modification NeededNo
Axle Modification NeededNon
Bushings IncludedOui
Bushings Included
Bushings IncludedYes
Mounting Hardware IncludedNo
Mounting Hardware IncludedNon
Length Axis 123
Length Axis 223
Pack Thickness2.765
Leaf Spring Arch Length5.125
Spring Research Institute Number34-123

This part fits 23 vehicles. Search below:

YearMakeModelPositionNotes
1997DodgeB3500RearOne Piece Spring Shackle
1996DodgeB3500RearOne Piece Spring Shackle
1995DodgeB3500RearOne Piece Spring Shackle
1994DodgeB350RearOne Piece Spring Shackle
1993DodgeB350RearOne Piece Spring Shackle
1992DodgeB350RearOne Piece Spring Shackle
1991DodgeB350RearOne Piece Spring Shackle
1990DodgeB350RearOne Piece Spring Shackle
1989DodgeB350RearOne Piece Spring Shackle
1988DodgeB350RearOne Piece Spring Shackle
1987DodgeB350RearOne Piece Spring Shackle
1986DodgeB350RearOne Piece Spring Shackle
1985DodgeB350RearOne Piece Spring Shackle
1984DodgeB350RearOne Piece Spring Shackle
1983DodgeB350RearOne Piece Spring Shackle
1982DodgeB350RearOne Piece Spring Shackle
1981DodgeB350RearOne Piece Spring Shackle
1980DodgeB300RearOne Piece Spring Shackle
1979DodgeB300RearOne Piece Spring Shackle
1978DodgeB300RearOne Piece Spring Shackle
1977DodgeB300RearOne Piece Spring Shackle
1976DodgeB300RearOne Piece Spring Shackle
1975DodgeB300RearOne 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:

034-0123-0134-123DAY3638595

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.