Duramax Diesel Parts & Upgrades

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1682 products

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WCFab WCF100217 Premium Rear Differential Cover Bolt Kit (2020 - 2024 Duramax; 2003 - 2024 Cummins) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100217 Premium Rear Differential Cover Bolt Kit (2020-2025 6.6L Duramax / 2003-2024 5.9/6.7L Cummins) Sale price$68.99 Regular price$71.99
On sale
Wehrli Custom Fabrication | WCFab WCF100114 AAM 12" Rear Differential Cover (2020 - 2026 Duramax; 2019 - 2024 Cummins) - Southern Diesel SupplyWehrli Custom Fabrication | WCFab WCF100114 AAM 12" Rear Differential Cover (2020 - 2026 Duramax; 2019 - 2024 Cummins) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100114 AAM 12" Rear Differential Cover (2020-2026 6.6L Duramax / 2019-2026 6.7L Cummins) Sale priceFrom $379.99 Regular price$389.99
+21
WCFab WCF100224 L5P Duramax Auxiliary Coolant Tank Kit (2020 - 2025 Duramax) - Southern Diesel SupplyWCFab WCF100224 L5P Duramax Auxiliary Coolant Tank Kit (2020 - 2025 Duramax) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100224 Auxiliary Coolant Tank Kit (2020-2026 6.6L Duramax) Sale priceFrom $249.99
+21
Wehrli Custom Fabrication | WCFab WCF100822 L5P Duramax VGT Turbo Heat Blanket | Turbocharger - Southern Diesel SupplyWehrli Custom Fabrication | WCFab WCF100822 L5P Duramax VGT Turbo Heat Blanket | Turbocharger - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100822 Turbo Heat Blanket (2017-2026 6.6L Duramax) Sale price$159.99
On sale
WCFab WCF100381 3.5" Passenger (Cold) Side Intercooler Pipe Kit (2020 - 2026 Duramax) - Southern Diesel SupplyWCFab WCF100381 3.5" Passenger (Cold) Side Intercooler Pipe Kit (2020 - 2026 Duramax) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100381 3.5" Passenger (Cold) Side Intercooler Pipe Kit (2020-2026 6.6L Duramax) Sale priceFrom $379.99 Regular price$389.99
+21
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WCFab WCF100365 3" Driver (Hot) Side Intercooler Pipe Kit (2020 - 2026 Duramax) - Southern Diesel SupplyWCFab WCF100365 3" Driver (Hot) Side Intercooler Pipe Kit (2020 - 2026 Duramax) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100365 3" Driver (Hot) Side Intercooler Pipe Kit (2020-2026 6.6L Duramax) Sale price$339.99 Regular price$349.99
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WCFab WCF207 - 103 2.75" X 3" ID Straight Reducer 4.5" Long Silicone Boot And Clamp Kit - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF207-103 2.75" X 3" ID Straight Reducer 4.5" Long Silicone Boot And Clamp Kit Sale price$62.99 Regular price$64.99
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WCFab WCF100717 Air Filter 4" Inlet (Dry) (2001 - 2024 Duramax; 2003 - 2018 Cummins; 2003 - 2007 Power Stroke)) - Southern Diesel SupplyWCFab WCF100717 Air Filter 4" Inlet (Dry) (2001 - 2024 Duramax; 2003 - 2018 Cummins; 2003 - 2007 Power Stroke)) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100717 Air Filter 4" Inlet (Dry) (2001-2024 6.6L Duramax; 2003-2018 5.9/6.7L Cummins; 2003-2007 6.0L PowerStroke)) Sale price$72.99 Regular price$75.99
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WCFab WCF100831 2020 - 2025 Duramax Traction Bar Brackets & Hardware Install Kit - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100831 Traction Bar Brackets & Hardware Install Kit (2020-2026 6.6L Duramax) Sale price$279.99 Regular price$289.99
On sale
WCFab WCF100718 L5P Duramax Stage 1 High Flow Intake Bundle Kit - Southern Diesel SupplyWCFab WCF100718 L5P Duramax Stage 1 High Flow Intake Bundle Kit - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100718 Stage 1 High Flow Intake Bundle Kit (2017-2019 6.6L Duramax) Sale priceFrom $619.99 Regular price$639.99
+21
On sale
WCFab WCF100708 L5P Duramax 3" Driver (Hot) Side Intercooler Pipe Kit - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100708 3" Driver (Hot) Side Intercooler Pipe Kit (2017-2019 6.6L Duramax) Sale priceFrom $339.99 Regular price$349.99
+21
On sale
WCFab WCF100260 LML Duramax CP3 Conversion Kit - Southern Diesel SupplyWCFab WCF100260 LML Duramax CP3 Conversion Kit - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100260 CP3 Conversion Kit (2011-2016 6.6L Duramax) Sale priceFrom $779.99 Regular price$799.99
On sale
WCFab WCF100684 4" Intake Kit with Air Box Stage 2 (2020 - 2026 Duramax) - Southern Diesel SupplyWCFab WCF100684 4" Intake Kit with Air Box Stage 2 (2020 - 2026 Duramax) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100684 4" Intake Kit with Air Box Stage 2 (2020-2026 6.6L Duramax) Sale priceFrom $839.99 Regular price$859.99
+21
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WCFab WCF100472 Billet Aluminum Coolant Tank Cap, Clear Anodized (2001 - 2024 Duramax; 2004.5 - 2024 Cummins) - Southern Diesel SupplyWCFab WCF100472 Billet Aluminum Coolant Tank Cap, Clear Anodized (2001 - 2024 Duramax; 2004.5 - 2024 Cummins) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100472 Billet Aluminum Coolant Tank Cap (2001-2024 6.6L Duramax / 2004.5-2024 Cummins) Sale price$38.99 Regular price$40.99
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WCFab WCF100129 3.5" Down Pipe (2017 - 2025 Duramax) - Southern Diesel SupplyWCFab WCF100129 3.5" Down Pipe (2017 - 2025 Duramax) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100129 3.5" Down Pipe (2017-2025 6.6L Duramax) Sale price$339.99 Regular price$349.99
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WCFab WCF100363 Duramax Billet Exhaust Manifolds - Southern Diesel SupplyWCFab WCF100226 Billet Exhaust Manifold & 2" Stainless Up Pipe Kit (2017 - 2025 Duramax) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100363 Duramax Billet Exhaust Manifolds (2001-2016 6.6L Duramax) Sale price$1,409.99 Regular price$1,449.99
WCFab WCF100458 CP3 Conversion Kit W/ Exergy 14mm Race Pump (2017 - 2026 Duramax) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100455 CP3 Conversion Kit w/ Exergy Pump (2017-2026 Duramax) Sale priceFrom $2,579.99
On sale
WCFab WCF100268 OEM Placement Coolant Tank Kit (2020 - 2025 Duramax) - Southern Diesel SupplyWCFab WCF100268 OEM Placement Coolant Tank Kit (2020 - 2025 Duramax) - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100268 OEM Placement Coolant Tank Kit (2020-2026 6.6L Duramax) Sale priceFrom $529.99 Regular price$549.99
+21
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WCFab WCF100269 Duramax Fass Relocation Mount - Southern Diesel SupplyWCFab WCF100269 Duramax Fass Relocation Mount - Southern Diesel Supply
Wehrli Custom Fabrication
WCFab WCF100269 FASS Relocation Mount (2011-2016 6.6L Duramax Crew Cab) Sale price$109.99 Regular price$119.99
ACDelco 10 - 4107 Dexron ULV Automatic Transmission Fluid (2020 - 2026 Duramax) - Southern Diesel Supply
ACDelco
ACDelco 10-4107 Dexron ULV Automatic Transmission Fluid (2020-2026 Duramax) Sale price$14.99
ACDelco TF938 Automatic Transmission Fluid Filter & Seal Kit (2020 - 2026 Duramax) - Southern Diesel Supply
ACDelco
ACDelco TF938 Automatic Transmission Fluid Filter & Seal Kit (2020-2026 Duramax) Sale price$99.99
AirDog A7SABC510 II - 5G DF - 165 - 5G Air/Fuel Separation System - Southern Diesel Supply
AirDog
AirDog A7SABC510 II-5G DF-165-5G Air/Fuel Separation System Sale price$849.99
Calibrated Power / DuramaxTuner L5P Intake Horn Anti - Surge Ring (2017 - 2021 Duramax) - Southern Diesel SupplyCalibrated Power Solutions Intake Horn Anti-Surge Ring (2017-2021 6.6L Duramax) - Southern Diesel Supply
Calibrated Power / DuramaxTuner
Calibrated Power Solutions Intake Horn Anti-Surge Ring (2017-2021 6.6L Duramax) Sale price$129.99
Calibrated Power / DuramaxTuner DM1DH1070203000 Stealth Mach 1 (64) Turbo (2011 - 2016 Duramax) - Southern Diesel SupplyCalibrated Power / DuramaxTuner DM1DH1070203000 Stealth Mach 1 (64) Turbo (2011 - 2016 Duramax) - Southern Diesel Supply
Calibrated Power / DuramaxTuner
Calibrated Power Solutions CPS200262 Stealth Mach 1 (64) Turbo (2011-2016 6.6L Duramax) Sale price$2,599.99

Not sure it fits your truck?

Our Wildwood, FL techs will confirm the right part for your build before you buy.

Call or Text (352) 722-5295

Parts and performance upgrades for every Duramax-powered Chevy and GMC, from the 2001 LB7 to the latest L5P, plus the 3.0L and 2.8L Duramax. Southern Diesel Supply is a working diesel shop, so we stock the parts we install every week: lift pumps, injectors, CP3 and CP4 pumps, turbos, Allison transmission parts, suspension and maintenance items.

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Need more fuel? See our AirDog lift pumps. Running a Cummins or Powerstroke instead? Shop Cummins parts or Powerstroke parts.