2017-2019 GM 2500HD/3500HD 6.6L L5 Duramax Exterior Upgrades

2017-2019 6.6L Silverado & Sierra 2500HD/3500HD

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Bed Liners

Bed Liners

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Bed Racks

Bed Racks

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Bull Bars

Bull Bars

2017-2019 GM 2500HD/3500HD 6.6L L5 Duramax Bumpers

Bumpers

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Fender Flares

Fender Flares

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Grilles & Grille Guards

Grilles & Grille Guards

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Mud Flaps

Mud Flaps

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Roof Racks

Roof Racks

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Side Steps

Side Steps

2017-2019 GM 2500HD/3500HD 6.6L L5 Duramax Tonneau Covers

Tonneau Covers

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Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD

Front Runner

Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD

SKU: FROKRCS006T
$1,725
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD

Front Runner

Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: FROKRCS008
$684
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD

Front Runner

Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: FROKRCS007T
$1,957
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD

Front Runner

Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: FROKRCS001T
$1,352
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal

S&B Filters

S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal

SKU: SAB84-1000
$349
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal

S&B Filters

S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal

SKU: SAB84-1002
$349
Rough Country SRB071785 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Crew Cab
Rough Country SRB071785 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Crew Cab
Rough Country SRB071785 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Crew Cab
Rough Country SRB071785 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Crew Cab
Rough Country SRB071785 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Crew Cab

Rough Country

Rough Country SRB071785 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Crew Cab

SKU: RCSSRB071785
$322.95
$379.95
Rough Country SRB071777 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Extended Cab
Rough Country SRB071777 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Extended Cab
Rough Country SRB071777 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Extended Cab
Rough Country SRB071777 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Extended Cab
Rough Country SRB071777 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Extended Cab

Rough Country

Rough Country SRB071777 HD2 Cab Length Running Boards | 2007-2018 GM Silverado/Sierra 1500/2500HD/3500HD Extended Cab

SKU: RCSSRB071777
$322.95
$379.95
Kleinn HK7 Pro Blaster Triple Train Horn Kit with 150PSI 100% Duty Onboard Air System | Universal
Kleinn HK7 Pro Blaster Triple Train Horn Kit with 150PSI 100% Duty Onboard Air System | Universal
Kleinn HK7 Pro Blaster Triple Train Horn Kit with 150PSI 100% Duty Onboard Air System | Universal

Kleinn Automotive Air Horns

Kleinn HK7 Pro Blaster Triple Train Horn Kit with 150PSI 100% Duty Onboard Air System | Universal

SKU: KLNHK7
$839.95
Husky 56886 Front and Rear Mud Guard Set | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD
Husky 56886 Front and Rear Mud Guard Set | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD
Husky 56886 Front and Rear Mud Guard Set | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD
Husky 56886 Front and Rear Mud Guard Set | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD

Husky Liners

Husky 56886 Front and Rear Mud Guard Set | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD

SKU: HUS56886
$107.99
$119.99
Wehrli 100041-FB Billet TIG Torch Stubby Antenna | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD
Wehrli 100041-FB Billet TIG Torch Stubby Antenna | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD
Wehrli 100041-FB Billet TIG Torch Stubby Antenna | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD
Wehrli 100041-FB Billet TIG Torch Stubby Antenna | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD
Wehrli 100041-FB Billet TIG Torch Stubby Antenna | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD

Wehrli Custom Fab

Wehrli 100041-FB Billet TIG Torch Stubby Antenna | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: WCF100041-FB-GB
From $59.17
T-Rex 25211B Billet Lower Bumper Grill | 2015-2019 Sierra 2500HD/3500HD
T-Rex 25211B Billet Lower Bumper Grill | 2015-2019 Sierra 2500HD/3500HD
T-Rex 25211B Billet Lower Bumper Grill | 2015-2019 Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex 25211B Billet Lower Bumper Grill | 2015-2019 Sierra 2500HD/3500HD

SKU: TRX25211B
$119.50
Rhino Rack JA6356 Heavy Duty 2500HD Black 2-Bar Roof Rack | 2015-2019 GM Silverado/Sierra 2500HD/3500HD
Rhino Rack JA6356 Heavy Duty 2500HD Black 2-Bar Roof Rack | 2015-2019 GM Silverado/Sierra 2500HD/3500HD

Rhino Rack

Rhino Rack JA6356 Heavy Duty 2500HD Black 2-Bar Roof Rack | 2015-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: RRUJA6356
$584.96
Rhino Rack JA6354 Vortex 2500HD Black 2-Bar Roof Rack | 2015-2019 GM Silverado/Sierra 2500HD/3500HD
Rhino Rack JA6354 Vortex 2500HD Black 2-Bar Roof Rack | 2015-2019 GM Silverado/Sierra 2500HD/3500HD

Rhino Rack

Rhino Rack JA6354 Vortex 2500HD Black 2-Bar Roof Rack | 2015-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: RRUJA6354
$604.96
Husky 56881 Front Mud Guards | 2014-2019 Silverado 1500/2500HD/3500HD
Husky 56881 Front Mud Guards | 2014-2019 Silverado 1500/2500HD/3500HD
Husky 56881 Front Mud Guards | 2014-2019 Silverado 1500/2500HD/3500HD
Husky 56881 Front Mud Guards | 2014-2019 Silverado 1500/2500HD/3500HD

Husky Liners

Husky 56881 Front Mud Guards | 2014-2019 Silverado 1500/2500HD/3500HD

SKU: HUS56881
$53.99
$59.99
Bushwacker 48111-08 Forge Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 48111-08 Forge Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 48111-08 Forge Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 48111-08 Forge Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 48111-08 Forge Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

Bushwacker

Bushwacker 48111-08 Forge Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

SKU: BWK48111-08
$449.99
Bushwacker 40978-02 Max Coverage Pocket Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40978-02 Max Coverage Pocket Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40978-02 Max Coverage Pocket Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

Bushwacker

Bushwacker 40978-02 Max Coverage Pocket Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

SKU: BWK40978-02
$599.99
Bushwacker 40968-02 Boss Pocket Style Front & Rear Fender Flares | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40968-02 Boss Pocket Style Front & Rear Fender Flares | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40968-02 Boss Pocket Style Front & Rear Fender Flares | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40968-02 Boss Pocket Style Front & Rear Fender Flares | 2015-2019 Sierra 1500/2500HD/3500HD

Bushwacker

Bushwacker 40968-02 Boss Pocket Style Front & Rear Fender Flares | 2015-2019 Sierra 1500/2500HD/3500HD

SKU: BWK40968-02
$549.99
Bushwacker 40967-02 Pocket/Rivet Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40967-02 Pocket/Rivet Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40967-02 Pocket/Rivet Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40967-02 Pocket/Rivet Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD

Bushwacker

Bushwacker 40967-02 Pocket/Rivet Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD

SKU: BWK40967-02
$549.99
Bushwacker 40966-02 Front & Rear Extend-A-Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40966-02 Front & Rear Extend-A-Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40966-02 Front & Rear Extend-A-Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40966-02 Front & Rear Extend-A-Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40966-02 Front & Rear Extend-A-Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD

Bushwacker

Bushwacker 40966-02 Front & Rear Extend-A-Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD

SKU: BWK40966-02
$699.99
Bushwacker 40965-02 OE Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40965-02 OE Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40965-02 OE Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40965-02 OE Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD
Bushwacker 40965-02 OE Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD

Bushwacker

Bushwacker 40965-02 OE Style Front & Rear Fender Flares with Black Smooth Finish | 2015-2019 Sierra 1500/2500HD/3500HD

SKU: BWK40965-02
$699.99
Bushwacker 40964-02 Front & Rear Extend-A-Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40964-02 Front & Rear Extend-A-Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40964-02 Front & Rear Extend-A-Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40964-02 Front & Rear Extend-A-Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40964-02 Front & Rear Extend-A-Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

Bushwacker

Bushwacker 40964-02 Front & Rear Extend-A-Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

SKU: BWK40964-02
$699.99
Bushwacker 40956-02 OE Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40956-02 OE Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40956-02 OE Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40956-02 OE Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40956-02 OE Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

Bushwacker

Bushwacker 40956-02 OE Style Front & Rear Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

SKU: BWK40956-02
$699.99
Bushwacker 40159-02 DRT Style Front Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40159-02 DRT Style Front Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40159-02 DRT Style Front Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40159-02 DRT Style Front Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD
Bushwacker 40159-02 DRT Style Front Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

Bushwacker

Bushwacker 40159-02 DRT Style Front Fender Flares | 2015-2019 Silverado 1500/2500HD/3500HD

SKU: BWK40159-02
$354.37

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2017-2019 6.6L Silverado & Sierra 2500HD/3500HD

Power Lift Shop All

Your 2017-2019 GM 6.6L Duramax L5P already packs an aggressive and rugged look, but if you're looking to take it a step further, pick up some custom exterior upgrades from Alligator Performance! We offer a massive selection of premium exterior parts that not only enhance your GM 2500HD/3500HD’s style but also improve its functionality along the way. From aggressive side steps and fender flares to sleek grilles, mud flaps, and roof racks, we have everything you need to make your Sierra or Silverado stand out on the road or trail. And after you've picked up a few exterior accessories, add on some new Wheels and Tires to make statement around every corner. GM Duramax Fitments: 2017, 2018, 2019 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.

GM Duramax>2017-2019 6.6L L5P
Side Steps
Fender Flares
Grilles
Mud Flaps
Roof Racks

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The Garage

Welcome to The Garage – your one-stop shop for all your car care and maintenance needs. From premium oils and filters to top-notch car care products, we have everything you need to keep your vehicle running smoothly and looking its best. Whether you're a DIY enthusiast or a professional mechanic, our carefully curated selection of high-quality products will help you take care of your ride like never before.

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