HomeSuspension > Suspension, Springs and Related ComponentsDorman 929-401 Leaf Spring - Rear Left or Rear Right
Part #: 929-401

Dorman 929-401 Leaf Spring - Rear Left or Rear Right

Rear Left
17 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Toyota, Tacoma
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Durable Leaf Spring Assembly for Toyota Tacoma

The Dorman 929-401 leaf spring assembly is designed specifically for Toyota Tacoma models, providing reliable suspension support with a standard suspension grade. Constructed from high-quality steel and finished in black, this leaf spring assembly ensures consistent performance and durability.

  • Material: Steel construction for strength and longevity
  • Color: Black finish for corrosion resistance
  • Suspension Grade Type: Standard for everyday driving conditions
  • Leaf Quantity: 4 leaves for balanced load distribution
  • Leaf Width: 2.36 inches for optimal support
  • Helper Spring: Not included
  • Axle Modification: Not required for installation
  • Bushings Included: Yes, for smooth operation
  • Mounting Hardware: Not included
  • Length Axis 1: 24.03 inches
  • Length Axis 2: 31.14 inches
  • Leaf Spring Arch Length: 6.7 inches
  • End 1 Attachment Type: Berlin eye
  • End 2 Attachment Type: Up turned eye
  • Maximum Drop: 0 inches
  • Package Contents: 1 leaf spring assembly

Product Details and Specifications

The Dorman 929-401 leaf spring assembly is engineered to meet the suspension needs of Toyota Tacoma trucks without requiring axle modifications. Featuring four steel leaves with a 2.36-inch width, this assembly provides a balanced and stable ride. The black finish helps resist corrosion, extending the lifespan of the component. The included bushings ensure proper fit and reduce noise and vibration during operation. The spring’s design includes a Berlin eye on one end and an up turned eye on the other, facilitating straightforward installation and compatibility with factory mounting points.

Compatible Applications and Common Uses

This leaf spring assembly is compatible with Toyota Tacoma models, making it suitable for owners seeking to replace worn or damaged suspension components. It addresses several suspension-related issues, including:

  • Sagging or uneven ride height
  • Reduced load carrying capacity
  • Excessive vehicle bounce or instability
  • Worn or damaged leaf springs causing noise
  • Improved suspension response for daily driving

Installation Notes and Tips

Installation of the Dorman 929-401 leaf spring assembly does not require axle modifications, simplifying the replacement process. While bushings are included, mounting hardware is not, so ensure you have the necessary bolts and fasteners before beginning installation. It is recommended to have the vehicle properly supported and to follow manufacturer torque specifications for all fasteners. Professional installation is advised if you are unfamiliar with suspension work.

Quality Assurance and Warranty Information

Dorman manufactures this leaf spring assembly to meet industry standards for durability and performance. The steel construction and corrosion-resistant finish contribute to long service life. While specific warranty details are not provided here, Dorman typically offers limited warranties on their suspension components. Refer to Dorman’s official documentation for complete warranty terms.

BrandDorman
Part Number929-401
Axle Modification NeededNo
Bushings IncludedYes
ColorBlack
End 1 Attachment TypeBerlin Eye
End 2 Attachment TypeUp Turned Eye
Helper SpringNo
Leaf Quantity4
Leaf Spring Arch Length6.7
Leaf Width2.36
Length Axis 124.03
Length Axis 231.14
MaterialSteel
Maximum Drop0
Mounting Hardware IncludedNo
Package Contents1 Leaf Spring
Spring Research Institute Number90-203
Suspension Grade TypeStandard

This part fits 17 vehicles. Search below:

YearMakeModelSubmodelBody TypeDrive TypePositionNotes
2004ToyotaTacomaExtended Cab PickupRWDRear Left4 Leaf; Exc. Heavy Duty Spring
2004ToyotaTacomaExtended Cab Pickup4WDRear Left4 Leaf; Exc. Heavy Duty Spring
2003ToyotaTacomaExtended Cab PickupRWDRear Left4 Leaf; Exc. Heavy Duty Spring
2003ToyotaTacomaExtended Cab Pickup4WDRear Left4 Leaf; Exc. Heavy Duty Spring
2002ToyotaTacomaExtended Cab PickupRWDRear Left4 Leaf; Exc. Heavy Duty Spring
2002ToyotaTacomaExtended Cab Pickup4WDRear Left4 Leaf; Exc. Heavy Duty Spring
2001ToyotaTacomaExtended Cab PickupRWDRear Left4 Leaf; Exc. Heavy Duty Spring
2001ToyotaTacomaExtended Cab Pickup4WDRear Left4 Leaf; Exc. Heavy Duty Spring
2000ToyotaTacoma4WDRear Left
2000ToyotaTacomaPre RunnerRWDRear Left
2000ToyotaTacomaPre RunnerRWDRear Right
1999ToyotaTacoma4WDRear Left
1999ToyotaTacomaPre RunnerRWDRear Left
1999ToyotaTacomaPre RunnerRWDRear Right
1998ToyotaTacoma4WDRear Left
1998ToyotaTacomaPre RunnerRWDRear Left
1998ToyotaTacomaPre RunnerRWDRear Right

* 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:

4821004140

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