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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AMP Research 19-04280-STA Replacement Controller Module | Universal
AMP Research 19-04280-STA Replacement Controller Module | Universal
AMP Research 19-04280-STA Replacement Controller Module | Universal
AMP Research 19-04280-STA Replacement Controller Module | Universal
AMP Research 19-04280-STA Replacement Controller Module | Universal

AMP Research

AMP Research 19-04280-STA Replacement Controller Module | Universal

SKU: AMP19-04280-STA
$99.99
AMP Research 76254-01A Powerstep Electric Running Boards Plug N Play | 2019-2022 GM Silverado/Sierra 2500HD
AMP Research 76254-01A Powerstep Electric Running Boards Plug N Play | 2019-2022 GM Silverado/Sierra 2500HD
AMP Research 76254-01A Powerstep Electric Running Boards Plug N Play | 2019-2022 GM Silverado/Sierra 2500HD
AMP Research 76254-01A Powerstep Electric Running Boards Plug N Play | 2019-2022 GM Silverado/Sierra 2500HD
AMP Research 76254-01A Powerstep Electric Running Boards Plug N Play | 2019-2022 GM Silverado/Sierra 2500HD

AMP Research

AMP Research 76254-01A Powerstep Electric Running Boards Plug N Play | 2019-2022 GM Silverado/Sierra 2500HD

SKU: AMP76254-01A
$1,799.99
AMP Research 76154-01A Power Step | 2014-2018 GM Silverado/Sierra 2500HD/3500HD
AMP Research 76154-01A Power Step | 2014-2018 GM Silverado/Sierra 2500HD/3500HD
AMP Research 76154-01A Power Step | 2014-2018 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 76154-01A Power Step | 2014-2018 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP76154-01A
$1,799.99
AMP Research 76404-01A OBD-II Splitter | Universal
AMP Research 76404-01A OBD-II Splitter | Universal
AMP Research 76404-01A OBD-II Splitter | Universal
AMP Research 76404-01A OBD-II Splitter | Universal

AMP Research

AMP Research 76404-01A OBD-II Splitter | Universal

SKU: AMP76404-01A
$119.99
AMP Research 76247-01A PowerStep Plug-N-Play Side Steps | 2017-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 76247-01A PowerStep Plug-N-Play Side Steps | 2017-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 76247-01A PowerStep Plug-N-Play Side Steps | 2017-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 76247-01A PowerStep Plug-N-Play Side Steps | 2017-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 76247-01A PowerStep Plug-N-Play Side Steps | 2017-2019 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 76247-01A PowerStep Plug-N-Play Side Steps | 2017-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP76247-01A
$1,799.99
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP75407-01A
$329.99
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal

S&B Filters

S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal

SKU: SAB84-1001
$349
AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal
AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal
AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal
AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal

AMP Research

AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal

SKU: AMP75131-01A
$169.99
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP75154-01A-B
$1,599.99
BAK Industries 226122 G2 Tonneau Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 226122 G2 Tonneau Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 226122 G2 Tonneau Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

BAK Industries

BAK Industries 226122 G2 Tonneau Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

SKU: BAK226122
$1,099.99
$1,299.99
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

BAK Industries

BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

SKU: BAK448122
$1,249.99
$1,399.99
Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed
Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed
Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed
Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed

Bestop

Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed

SKU: BST16218-01
$459.99
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed

BAK Industries

BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed

SKU: BAK226121
$1,049.99
$1,249.99
Bestop 16217-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
Bestop 16217-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
Bestop 16217-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed

Bestop

Bestop 16217-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed

SKU: BST16217-01
$459.99
Bestop 76303-35 Supertop 6.5" inch Top | 1999-2017 GM Silverado/Sierra 2500HD/3500HD
Bestop 76303-35 Supertop 6.5" inch Top | 1999-2017 GM Silverado/Sierra 2500HD/3500HD

Bestop

Bestop 76303-35 Supertop 6.5" inch Top | 1999-2017 GM Silverado/Sierra 2500HD/3500HD

SKU: BST76303-35
$999.99
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed

Rough Country

Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed

SKU: RCS49119551
$849.95
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed

Rough Country

Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed

SKU: RCS49119651
$849.95
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

Rough Country

Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: RCS10764
$699.95
ADD C9988320001NA Overland Rack | Universal
ADD C9988320001NA Overland Rack | Universal
ADD C9988320001NA Overland Rack | Universal
ADD C9988320001NA Overland Rack | Universal
ADD C9988320001NA Overland Rack | Universal

Addictive Desert Designs

ADD C9988320001NA Overland Rack | Universal

SKU: ADDC9988320001NA
$2,998.98
AMP Research 74841-00A BedXtender HD Max | 2019-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 74841-00A BedXtender HD Max | 2019-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 74841-00A BedXtender HD Max | 2019-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 74841-00A BedXtender HD Max | 2019-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 74841-00A BedXtender HD Max | 2019-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 74841-00A BedXtender HD Max | 2019-2025 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 74841-00A BedXtender HD Max | 2019-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP74841-00A
$329.99
AMP Research 74831-01A BedXtender HD Sport Sport Bed Extender - Black | 2019-2025 GM Silverado/Sierra 2500HD/3500HD Without MultiPro Tailgate
AMP Research 74831-01A BedXtender HD Sport Sport Bed Extender - Black | 2019-2025 GM Silverado/Sierra 2500HD/3500HD Without MultiPro Tailgate
AMP Research 74831-01A BedXtender HD Sport Sport Bed Extender - Black | 2019-2025 GM Silverado/Sierra 2500HD/3500HD Without MultiPro Tailgate
AMP Research 74831-01A BedXtender HD Sport Sport Bed Extender - Black | 2019-2025 GM Silverado/Sierra 2500HD/3500HD Without MultiPro Tailgate
AMP Research 74831-01A BedXtender HD Sport Sport Bed Extender - Black | 2019-2025 GM Silverado/Sierra 2500HD/3500HD Without MultiPro Tailgate
AMP Research 74831-01A BedXtender HD Sport Sport Bed Extender - Black | 2019-2025 GM Silverado/Sierra 2500HD/3500HD Without MultiPro Tailgate

AMP Research

AMP Research 74831-01A BedXtender HD Sport Sport Bed Extender - Black | 2019-2025 GM Silverado/Sierra 2500HD/3500HD Without MultiPro Tailgate

SKU: AMP74831-01A
$329.99
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed

Truxedo

Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed

SKU: TXO1272216
$749.99
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed

Truxedo

Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed

SKU: TXO1272016
$699.99
AMP Research 74608-01A BedXtender HD Quick Mount Bracket Kit | Universal
AMP Research 74608-01A BedXtender HD Quick Mount Bracket Kit | Universal
AMP Research 74608-01A BedXtender HD Quick Mount Bracket Kit | Universal

AMP Research

AMP Research 74608-01A BedXtender HD Quick Mount Bracket Kit | Universal

SKU: AMP74608-01A
$29.99

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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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