128+ 2018 GMC Sierra 3500 HD Suspension & Steering SLT Parts

SLT · Suspension & Steering (126 products)

Exact-fit parts for the 2018 GMC Sierra 3500 HD SLT.

Firestone

Part # 2613

Confirmed Fit

Firestone Ride-Rite Air Helper Spring Kit Rear Chevy/GMC HD 2500/3500 (W217602613)

$702.68

Camburg

Part # CAM-010047

Confirmed Fit

Camburg 1.25 Uniball Replacement Kit (pair)

$157.80

Cognito

Part # 199-91253

Confirmed Fit

Cognito 11-25 Chevrolet Silverado 2500 Alpha Ball Joint w/ Press-In Style Upper Control Arm

$97.23

ICON

Part # 614521

Confirmed Fit

ICON 78500 Bushing & Sleeve Kit Mfg After 8/2015

$91.51

SPC Performance

Part # 86326

Confirmed Fit

SPC Performance GM Alignment Cam Guide Pins (8)

$24.96

SPC Performance

Part # 86376

Confirmed Fit

SPC Performance 11+ Chevy/GMC 2500HD / 3500HD Upper Camber/Caster Kit

$71.09

Timbren

Part # GMRTT35D

Confirmed Fit

Timbren 2011 Chevrolet Silverado 2500 HD Rear Suspension Enhancement System

$398.07

Cognito

Part # 110-90271

Confirmed Fit

Cognito 11-19 Chevy/GMC Silv/Sierra 2500/3500 HD Economy Traction Bar Kit for 0-6in Rear Lift Kit

$573.39

Rancho

Part # RS8628

Confirmed Fit

Rancho Universal / Non-Application Rancho Adjuster Assembly

$7.08

Moog

Part # 515147

Confirmed Fit

MOOG 11-19 Chevrolet Silverado 3500 HD Front Hub Assembly

$216.63

Belltech

Part # 6424

Confirmed Fit

Belltech 11-13 Chevrolet Silverado/Sierra 1 Ton Pickup 1in Rear Drop Shackle Kit

$146.18

Cognito

Part # 110-91348

Confirmed Fit

Cognito 11-25 GM 2500/3500HD Steering Stabilizer Kit

$307.15

Timbren

Part # GMFK25D

Confirmed Fit

Timbren 2011 Chevrolet Silverado 2500 HD Front Suspension Enhancement System

$269.36

Firestone

Part # 2158

Confirmed Fit

Firestone Level Command II Standard Duty Single Analog Air Compressor System Kit (WR17602158)

$402.16

Hellwig

Part # 7885

Confirmed Fit

Hellwig 11-18 Chevy Silverado 2500 HD 4-6in Lift Solid Heat Treated Chromoly 1-1/4in Rear Sway Bar

$660.42

Cognito

Part # 210-91218

Confirmed Fit

Cognito 11-24 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Deaver 4 Inch Leaf Spring Pack K97

$1837.39

Unity Automotive

Part # 2-211090-001

Confirmed Fit

Unity Automotive Front Shock Absorbers - 2-211090-001

$61.10

Camburg

Part # CAM-210026

Confirmed Fit

Camburg Chevy/GMC 2500/3500 HD 2WD/4WD 11-19 1.25in Performance Uniball Upper Arms

$1005.06

Timbren

Part # GMRCK25D

Confirmed Fit

Timbren 2011 Chevrolet Silverado 2500 HD Rear Suspension Enhancement System

$269.36

Cognito

Part # 110-91159

Confirmed Fit

Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Ball Joint SM Series UCA Builders Kit

$696.29

Frequently Asked Questions

Do these parts fit my 2018 GMC Sierra 3500 HD SLT?

This page groups parts listed for the 2018 GMC Sierra 3500 HD SLT. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.

What suspension & steering options are available for my 2018 GMC Sierra 3500 HD SLT?

We offer a wide selection of suspension & steering parts for the 2018 GMC Sierra 3500 HD SLT. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.

What brands make parts for the 2018 GMC Sierra 3500 HD SLT?

We carry parts from trusted brands including Moog, Cognito, Firestone, Air Lift, and COMP Cams, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 2018 GMC Sierra 3500 HD SLT parts ship?

Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.

What warranty do your 2018 GMC Sierra 3500 HD SLT parts come with?

Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.

2018 GMC Sierra 3500 HD(3,671 parts)

2018 GMC Sierra 3500 HD(3,671 parts)

Shop by Problem

Other GMC Sierra 3500 HD Years

SLT · Suspension & Steering (126 products)

Firestone Ride-Rite Air Helper Spring Kit Rear Chevy/GMC HD 2500/3500 (W217602613)

Camburg 1.25 Uniball Replacement Kit (pair)

Cognito 11-25 Chevrolet Silverado 2500 Alpha Ball Joint w/ Press-In Style Upper Control Arm

ICON 78500 Bushing & Sleeve Kit Mfg After 8/2015

SPC Performance GM Alignment Cam Guide Pins (8)

SPC Performance 11+ Chevy/GMC 2500HD / 3500HD Upper Camber/Caster Kit

Timbren 2011 Chevrolet Silverado 2500 HD Rear Suspension Enhancement System

Cognito 11-19 Chevy/GMC Silv/Sierra 2500/3500 HD Economy Traction Bar Kit for 0-6in Rear Lift Kit

Rancho Universal / Non-Application Rancho Adjuster Assembly

MOOG 11-19 Chevrolet Silverado 3500 HD Front Hub Assembly

Belltech 11-13 Chevrolet Silverado/Sierra 1 Ton Pickup 1in Rear Drop Shackle Kit

Cognito 11-25 GM 2500/3500HD Steering Stabilizer Kit

Timbren 2011 Chevrolet Silverado 2500 HD Front Suspension Enhancement System

Firestone Level Command II Standard Duty Single Analog Air Compressor System Kit (WR17602158)

Hellwig 11-18 Chevy Silverado 2500 HD 4-6in Lift Solid Heat Treated Chromoly 1-1/4in Rear Sway Bar

Cognito 11-24 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Deaver 4 Inch Leaf Spring Pack K97

Unity Automotive Front Shock Absorbers - 2-211090-001

Camburg Chevy/GMC 2500/3500 HD 2WD/4WD 11-19 1.25in Performance Uniball Upper Arms

Timbren 2011 Chevrolet Silverado 2500 HD Rear Suspension Enhancement System

Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Ball Joint SM Series UCA Builders Kit

Frequently Asked Questions

Do these parts fit my 2018 GMC Sierra 3500 HD SLT?

What suspension & steering options are available for my 2018 GMC Sierra 3500 HD SLT?

What brands make parts for the 2018 GMC Sierra 3500 HD SLT?

How fast do 2018 GMC Sierra 3500 HD SLT parts ship?

What warranty do your 2018 GMC Sierra 3500 HD SLT parts come with?