Dorman 43-1707 Leaf Helper Spring - Rear
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Dorman

Dorman 43-1707 Leaf Helper Spring - Rear

Brand Dorman 43-1707
Position Rear
Material Acero
Material Steel
Length 41.625
Color Black
Color Negro
Color Noir
Thickness 0.59
Leaf Spring Load Increase Strength 675
Maximum Load Rating 675
Width 3
Mounting Hardware Included No
Mounting Hardware Included Non
Contenidos del paquete 1 hoja de muelle
Package Contents 1 leaf spring
Fits Ford · 33 vehicles

OE-style replacement. Matches the fit and function of the original spring.

Steel construction. Built for durability and reliable performance.

Load support. Adds up to 675 lb of spring load increase strength.

Cross-references 7C345A975D, 7C345A975DE and 7C345560DE for the same application. See all 6.

$118.98Free shipping
In stock · usually ships same day before 1pm CST
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Leaf Helper Spring options

Dorman 43-1707 Rear Leaf Helper Spring

Dorman 43-1707 is a rear leaf helper spring built to match the fit and function of the original spring on specified vehicles. It is engineered for durable, reliable performance in heavy-duty suspension applications, including Ford F-350 Super Duty models with dual rear wheels.

Key Features

  • Direct-fit rear leaf helper spring for specified applications
  • Steel construction for strength and long-term service
  • Black finish for a clean, corrosion-resistant appearance
  • Leaf spring load increase strength: 675
  • Maximum load rating: 675
  • Dimensions: 41.625 in. length, 3 in. width, 0.59 in. thickness
  • Compatible With 2008-2016 Ford F-350 Super Duty, rear, 1 leaf; full taper; 9/16 in. leaf thickness; 675 lb. average capacity; w/Dual Rear Wheels (DRW)

Detailed Description

This Dorman leaf helper spring, part number 43-1707, is designed for rear suspension service on 2008-2016 Ford F-350 Super Duty trucks with dual rear wheels. It follows the original spring’s fit and function, helping restore the rear leaf spring assembly to proper operating condition. The steel construction and 675 load increase strength support heavy-duty use where rear suspension performance matters. This part cross-references Dorman OE-style applications such as 43-1707DAY and 43-1863 for the same application.

Common Issues It Can Address

  • Sagging rear ride height from worn leaf spring components
  • Reduced load support in the rear suspension
  • Uneven rear stance under cargo or towing weight
  • Loss of original spring rate and support
  • Noise or instability related to fatigued leaf spring hardware

Installation Notes and Tips

Verify rear suspension configuration before ordering, especially dual rear wheel fitment and leaf thickness. This Dorman 43-1707 leaf helper spring is supplied without mounting hardware, so reuse or source the required hardware separately as needed. Confirm all mounting points, spring orientation, and vehicle-specific notes against the application listing before installation.

Quality Assurance

Dorman engineers this replacement spring to match original fit and function for the listed Ford F-350 Super Duty applications. The steel construction and application-specific design support dependable service in rear suspension use.

This part fits 33 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypePositionNotes
2016FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2016FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2016FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2016FordF-450 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/4 Leaf Springs
2015FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2015FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2015FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2015FordF-450 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/4 Leaf Springs
2014FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2014FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2014FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2014FordF-450 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/4 Leaf Springs
2013FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2013FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2013FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2013FordF-450 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/4 Leaf Springs
2012FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2012FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2012FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2012FordF-450 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/4 Leaf Springs
2011FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2011FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2011FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2011FordF-450 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/4 Leaf Springs
2010FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2010FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2010FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2009FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2009FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2009FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2008FordF-350 Super DutyStandard Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2008FordF-350 Super DutyExtended Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
2008FordF-350 Super DutyCrew Cab PickupRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity; w/Dual Rear Wheels (DRW)
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
7C345A975D7C345A975DE7C345560DE43-1707DAY43-186343-1961