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Part #: 43-1185

Dorman 43-1185 Leaf Spring Assembly - Rear

Rear
⚙️ 27 vehicles fit this part
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🚗Fitment: Ford, F-150 and F-150 Heritage
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Dorman 43-1185 Rear Leaf Spring Assembly

Dorman 43-1185 is a rear leaf spring assembly for select Ford F-150 and Ford F-150 Heritage applications. Built from steel with black bushings, this standard replacement leaf spring is specified for rear suspension service where load support and ride control matter.

Key Features

  • Steel leaf spring assembly for rear suspension use
  • 3-leaf design with 2.5 in. leaf width
  • Load rate: 1434
  • Black bushings included
  • Standard suspension grade replacement
  • End 1 and End 2 attachment type: Berlin Eye
  • Package contents: 1 leaf spring

Detailed Description

This Dorman 43-1185 leaf spring assembly is built for rear suspension service on 1997-2003 Ford F-150 and 2004 Ford F-150 Heritage models. It uses a 3-leaf construction with a 1.439 in. pack thickness, 7.938 in. arch length, and 26.375 in. length axis dimensions, with a 32.125 in. length B measurement. The assembly is listed with bushings included and no helper spring, making it a direct replacement option for vehicles that need a standard rear leaf spring service part. This part cross-references OE-style applications such as Monroe Shocks & Struts 172286 and 182286 for the same application. Dorman 43-1185 is also identified by Spring Research Institute number 43-1185.

What It Helps Address

  • Sagging rear ride height
  • Reduced rear load support
  • Uneven rear suspension response
  • Worn or fatigued leaf spring packs
  • Rear-end instability under payload

Installation Notes

Compatible With 1997-2003 Ford F-150, rear, and 2004 Ford F-150 Heritage, rear. Verify axle orientation, spring pack thickness, arch length, and attachment style before installation. Confirm the vehicle uses the listed 3-leaf rear spring configuration and compare all dimensions to the original part before service. Professional installation is recommended for suspension components.

Quality Assurance

Dorman supplies OE Solutions replacement parts for suspension repair, and this leaf spring assembly is built to match the listed application details for the Ford F-150 platform. Review all fitment and dimensional data against the vehicle before ordering.

BrandDorman
Part Number43-1185
MaterialAcero
MaterialSteel
Bushing ColorBlack
Bushing ColorNegro
Bushing ColorNoir
ColorBlack
ColorNegro
ColorNoir
Load Rate1434
Suspension Grade TypeReemplazo estándar
Suspension Grade TypeStandard
Leaf Quantity3
Leaf Width2.5
Axle OrientationArrière
Axle OrientationRear
Axle OrientationTrasero
Helper SpringNo
Helper SpringNon
Axle Modification NeededNo
Axle Modification NeededNon
Bushings IncludedOui
Bushings IncludedSí
Bushings IncludedYes
Mounting Hardware IncludedNo
Mounting Hardware IncludedNon
Length Axis 126.375
Length Axis 226.375
Pack Thickness1.439
Leaf Spring Arch Length7.938
Spring Research Institute Number43-1185

This part fits 27 vehicles. Search below:

YearMakeModelSubmodelBody TypePositionNotes
2004FordF-150 HeritageXLRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2004FordF-150 HeritageXLTRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2003FordF-150XLRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2003FordF-150XLTStandard Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2003FordF-150XLTExtended Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2003FordF-150King RanchExtended Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2003FordF-150LariatExtended Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2002FordF-150XLRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2002FordF-150XLTStandard Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2002FordF-150XLTExtended Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2002FordF-150King RanchExtended Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2002FordF-150LariatExtended Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2001FordF-150XLRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2001FordF-150XLTStandard Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2001FordF-150XLTExtended Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2001FordF-150LariatStandard Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2001FordF-150LariatExtended Cab PickupRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2000FordF-150BaseRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2000FordF-150XLRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2000FordF-150XLTRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
2000FordF-150LariatRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
1999FordF-150BaseRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
1999FordF-150XLRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
1999FordF-150XLTRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
1999FordF-150LariatRear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
1998FordF-150Rear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity
1997FordF-150Rear2 Leaf / 1 Leaf = 3 Leaf Spring; 1.4375 In. Pack Thickness; 1,434 Lb. Average Capacity

* 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:

043-1185-0043-118543-1185DAY43-1185HUS43-118743-120543-1775F65A5560ACF65A5560ADF65AACF65AADF65Z5560ACF85Z5560ZZ

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

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