Bilstein 51-304676 is a B8 Control Arms front upper control arm kit for the 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500, the 2019 Chevrolet Silverado 1500 LD and the 2019 GMC Sierra 1500 Limited. The kit contains a pair of tubular 4130 chromoly upper control arms with a black powder-coated finish, greasable sealed ball joints, greasable black Delrin inner bushings, mounting hardware, grease fittings and instructions. The arms replace the factory upper control arms and correct caster alignment on lifted suspensions, and the tubular design adds spring and shock clearance. The replacement ball joint kit is Bilstein part number 13-100117, and the quantity per vehicle is 1 kit.
Notes:
- All applications are for trucks with aluminum or stamped steel OEM upper control arms and are not compatible with forged steel OEM upper control arms.
- All applications are compatible with direct fit lift shocks or coilovers only and with OEM spindles only, are not for use with lift spacers, and require wheels with a maximum of 4.75 in backspacing.
Specifications:
- Brand: Bilstein
- Part Number: 51-304676
- Series: B8 Control Arms
- Product: Suspension Control Arm Kit
- Kit Contents: Pair of upper control arms with ball joints, mounting hardware, bushings, grease fittings, instructions
- Finish: Powder-Coated Black
- Arm Design: Tubular
- Arm Material: 4130 Chromoly Tubing
- Arm Inner Pivot Type: Greasable Black Delrin Bushings
- Arm Outer Pivot Type: Greasable Sealed Ball Joint
- Arm Bushing Lubricant: Prothane Super Grease
- Replacement Ball Joint Kit: 13-100117
- Replacement Grease Fitting Kit: B4-KT1-Z487A00
- Country of Origin: US
- Quantity per Vehicle: 1
Vehicle Applications
- 2014 Chevrolet Silverado 1500 (High Country, LT, LTZ, WT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2015 Chevrolet Silverado 1500 (High Country, LS, LT, LTZ, WT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2016 Chevrolet Silverado 1500 (Custom, High Country, LS, LT, LTZ, WT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2017 Chevrolet Silverado 1500 (Custom, High Country, LS, LT, LTZ, WT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2018 Chevrolet Silverado 1500 (Custom, High Country, LS, LT, LTZ, WT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2019 Chevrolet Silverado 1500 LD (Custom, LT, WT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2014 GMC Sierra 1500 (Base, Denali, SLE, SLT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2015 GMC Sierra 1500 (Base, SLE, SLT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2016 GMC Sierra 1500 (Base, SLE, SLT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2017 GMC Sierra 1500 (Base, SLE, SLT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2018 GMC Sierra 1500 (Base, SLE, SLT): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
- 2019 GMC Sierra 1500 Limited (Base, SLE): Front Upper; With Aluminum or Stamped Steel OEM Upper Control Arms, Not Compatible with Forged Steel OEM Upper Control Arms, Compatible with direct fit lift shocks or coilovers only, Compatible with OEM spindles only, Not for use with lift spacers, Requires wheels with maximum 4.75" backspacing
FAQ
What vehicles does the Bilstein 51-304676 fit?
It fits the front upper position of the 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500, the 2019 Chevrolet Silverado 1500 LD and the 2019 GMC Sierra 1500 Limited. The submodels covered for each year are listed under Vehicle Applications.
Which OEM upper control arms does the 51-304676 replace?
It is for trucks with aluminum or stamped steel OEM upper control arms and is not compatible with forged steel OEM upper control arms.
What is included with the 51-304676?
The kit includes a pair of upper control arms with ball joints, mounting hardware, bushings, grease fittings and instructions.
Can the 51-304676 be used with lift spacers?
No. It is compatible with direct fit lift shocks or coilovers only and OEM spindles only, and it is not for use with lift spacers.
Are there wheel requirements for the 51-304676?
Yes. The listed applications require wheels with a maximum of 4.75 in backspacing.

