Dorman 43-1749 Leaf Helper Spring - Rear

Brand Dorman 43-1749
Position Rear
Material Acero
Material Steel
Length 43.25
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 36 vehicles

OE direct replacement. Matches the fit and function of the original spring.

Steel construction. Built for durability and reliable performance.

Load increase strength. Rated to add 675 of spring support.

Cross-references Cardone Reman 43-1743, Dorman - OE Solutions 43-1749 and 43-1693 for the same application. See all 10.

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Dorman 43-1749 Leaf Helper Spring

Dorman 43-1749 is a 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 suspension applications that need added load support.

Key Features

  • Steel construction for strength and consistent suspension support
  • Black finish for a clean OE-style appearance
  • Measures 43.25 in. long, 3 in. wide, and 0.59 in. thick
  • Maximum load rating and load increase strength of 675
  • Direct replacement design for specified applications
  • Part number 43-1749 for easy identification

Detailed Description

This leaf helper spring is designed for vehicles that need restored rear suspension support and load-carrying stability. Built from steel and finished in black, Dorman 43-1749 follows the original spring’s fit and function for specified applications, helping maintain proper ride height and suspension response. It is a practical OE-style replacement for drivers searching for a leaf helper spring for Dorman 43-1749, a rear suspension spring replacement, or a load support spring for a compatible make and model. This part cross-references Cardone Reman 43-1743 for the same application.

What It Helps Address

  • Sagging rear suspension from worn helper spring components
  • Reduced load support when carrying cargo or towing-related weight
  • Uneven ride height caused by spring fatigue
  • Loss of suspension firmness under heavier use
  • Need for an OE-style replacement leaf helper spring

Installation Notes and Tips

Verify vehicle application before installation and compare the original spring dimensions to Dorman 43-1749. Mounting hardware is not included. Because this is a suspension component, professional installation and a post-installation alignment check are recommended. For buyers searching by vehicle, use the exact fitment listing for the applicable make and model rather than assuming universal compatibility. Compatible With specified vehicles only; confirm the correct application before ordering.

Quality Assurance

Dorman states that this leaf helper spring is engineered to match original fit and function and built for durable, reliable performance. The part number 43-1749 is also listed as Dorman - OE Solutions 43-1749 for OE-style replacement identification.

This part fits 36 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypePositionNotes
2016FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2016FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2016FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2016FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2015FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2015FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2015FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2015FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2014FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2014FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2014FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2014FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2013FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2013FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2013FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2013FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2012FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2012FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2012FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2012FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2011FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2011FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2011FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2011FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2010FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2010FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2010FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2010FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2009FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2009FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2009FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2009FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2008FordF-450 Super DutyCab & Chassis - Extended CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2008FordF-450 Super DutyCab & Chassis - ConventionalRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2008FordF-450 Super DutyCab & Chassis - Crew CabRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
2008FordF-550 Super DutyRear1 Leaf; Full Taper; 9/16 In. Leaf Thickness; 675 Lb. Average Capacity
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Cardone Reman — 43-1743Dorman - OE Solutions — 43-174943-169343-169543-1737043-1749-0043-180543-181143-182543-1839