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UnderDog Diesel

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Engine & Performance

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Wehrli Custom Fabrication 2017-2019 L5P Duramax Twin Turbo 4" Down Pipe - WCF100286

Engine & Performance

Wehrli Custom Fabrication 2017-2019 L5P Duramax Twin Turbo 4" Down Pipe - WCF100286

$596.55

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Wehrli Custom Fabrication 2017-2019 L5P Duramax Twin Turbo Coolant Tank Kit - WCF100710

Engine & Performance

Wehrli Custom Fabrication 2017-2019 L5P Duramax Twin Turbo Coolant Tank Kit - WCF100710

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Wehrli Custom Fabrication 2017-2019 L5P Duramax Twin Turbo Pedestal Kit - WCF100729

Engine & Performance

Wehrli Custom Fabrication 2017-2019 L5P Duramax Twin Turbo Pedestal Kit - WCF100729

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Wehrli Custom Fabrication 2017-2019 L5P Duramax WCFab X PPE High-Capacity Cast Aluminum Engine Oil Pan - WCF100133

Engine & Performance

Wehrli Custom Fabrication 2017-2019 L5P Duramax WCFab X PPE High-Capacity Cast Aluminum Engine Oil Pan - WCF100133

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Wehrli Custom Fabrication 2017-2023 L5P Duramax CP3 Conversion Kit - WCF100455, WCF100456, WCF100457, WCF100458

Engine & Performance

Wehrli Custom Fabrication 2017-2023 L5P Duramax CP3 Conversion Kit - WCF100455, WCF100456, WCF100457, WCF100458

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Wehrli Custom Fabrication 2017-2023 L5P Duramax Fass Fuel System Relocation Bracket - WCF100276

Engine & Performance

Wehrli Custom Fabrication 2017-2023 L5P Duramax Fass Fuel System Relocation Bracket - WCF100276

$62.08

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Wehrli Custom Fabrication 2017-2023 L5P Duramax OEM/VGT Turbo Gasket Kit - WCF100178

Engine & Performance

Wehrli Custom Fabrication 2017-2023 L5P Duramax OEM/VGT Turbo Gasket Kit - WCF100178

$145.50

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Wehrli Custom Fabrication 2017-2025 L5P Duramax Intake Horn Hardware Kit - WCF207-12

Engine & Performance

Wehrli Custom Fabrication 2017-2025 L5P Duramax Intake Horn Hardware Kit - WCF207-12

$14.55

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Wehrli Custom Fabrication 2017-2025 L5P Duramax Thermostat Housing - WCF100188

Engine & Performance

Wehrli Custom Fabrication 2017-2025 L5P Duramax Thermostat Housing - WCF100188

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Wehrli Custom Fabrication 2019-2023 6.7 Cummins 5" Intake Kit with Air Box - WCF100315

Engine & Performance

Wehrli Custom Fabrication 2019-2023 6.7 Cummins 5" Intake Kit with Air Box - WCF100315

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Wehrli Custom Fabrication 2019-2023 6.7L Cummins Stage 1 High Flow Intake Bundle Kit - WCF100292

Engine & Performance

Wehrli Custom Fabrication 2019-2023 6.7L Cummins Stage 1 High Flow Intake Bundle Kit - WCF100292

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Wehrli Custom Fabrication 2019-2023 6.7L Cummins Standard Output (SO) Upper Coolant Pipe - WCF100223

Engine & Performance

Wehrli Custom Fabrication 2019-2023 6.7L Cummins Standard Output (SO) Upper Coolant Pipe - WCF100223

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Wehrli Custom Fabrication 2019-2023 6.7L Cummins WCFab X Fleece Thermostat Housing - WCF100169

Engine & Performance

Wehrli Custom Fabrication 2019-2023 6.7L Cummins WCFab X Fleece Thermostat Housing - WCF100169

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Wehrli Custom Fabrication 2019-2023 6.7L High Output (HO) Cummins Upper Coolant Pipe - WCF100251

Engine & Performance

Wehrli Custom Fabrication 2019-2023 6.7L High Output (HO) Cummins Upper Coolant Pipe - WCF100251

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Wehrli Custom Fabrication 2019-2024 6.7L Cummins OEM Placement Coolant Tank Kit  - WCF100284

Engine & Performance

Wehrli Custom Fabrication 2019-2024 6.7L Cummins OEM Placement Coolant Tank Kit  - WCF100284

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Wehrli Custom Fabrication 2020-2024 L5P Duramax WCFab X PPE High-Capacity Cast Aluminum Engine Oil Pan - WCF100134

Engine & Performance

Wehrli Custom Fabrication 2020-2024 L5P Duramax WCFab X PPE High-Capacity Cast Aluminum Engine Oil Pan - WCF100134

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Wehrli Custom Fabrication 3.15" x 3.5" Silicone Reducer Boot - WCF203-96

Engine & Performance

Wehrli Custom Fabrication 3.15" x 3.5" Silicone Reducer Boot - WCF203-96

$28.13

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Wehrli Custom Fabrication 3.25" T-Bolt Clamp - WCF203-17

Engine & Performance

Wehrli Custom Fabrication 3.25" T-Bolt Clamp - WCF203-17

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Wehrli Custom Fabrication 3.5" ID x 4" Long Silicone Boot and Clamp Kit - WCF207-111

Engine & Performance

Wehrli Custom Fabrication 3.5" ID x 4" Long Silicone Boot and Clamp Kit - WCF207-111

$47.53

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Wehrli Custom Fabrication 3.5" ID x 5" Long Silicone Hump Boot and Clamp Kit - WCF207-108

Engine & Performance

Wehrli Custom Fabrication 3.5" ID x 5" Long Silicone Hump Boot and Clamp Kit - WCF207-108

$62.08

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Wehrli Custom Fabrication 3.5" T-Bolt Clamp - WCF203-28

Engine & Performance

Wehrli Custom Fabrication 3.5" T-Bolt Clamp - WCF203-28

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Wehrli Custom Fabrication 3.5" V-Band Clamp - WCF203-34

Engine & Performance

Wehrli Custom Fabrication 3.5" V-Band Clamp - WCF203-34

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Wehrli Custom Fabrication 3.5" x 4" ID Straight Reducer x 3" Long Silicone Boot and Clamp Kit - WCF207-106

Engine & Performance

Wehrli Custom Fabrication 3.5" x 4" ID Straight Reducer x 3" Long Silicone Boot and Clamp Kit - WCF207-106

$43.65

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Wehrli Custom Fabrication 3" ID x 4" Long Silicone Boot and Clamp Kit - WCF207-104

Engine & Performance

Wehrli Custom Fabrication 3" ID x 4" Long Silicone Boot and Clamp Kit - WCF207-104

$38.80

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Wehrli Custom Fabrication 3" T-Bolt Clamp - WCF203-32

Engine & Performance

Wehrli Custom Fabrication 3" T-Bolt Clamp - WCF203-32

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Wehrli Custom Fabrication 3" x 3.5" ID Straight Reducer x 4" Long Silicone Boot and Clamp Kit - WCF207-115

Engine & Performance

Wehrli Custom Fabrication 3" x 3.5" ID Straight Reducer x 4" Long Silicone Boot and Clamp Kit - WCF207-115

$47.53

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Wehrli Custom Fabrication 4" ID x 3" Long Silicone Boot and Clamp Kit - WCF207-102

Engine & Performance

Wehrli Custom Fabrication 4" ID x 3" Long Silicone Boot and Clamp Kit - WCF207-102

$38.80

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Wehrli Custom Fabrication 4" ID x 4" Long Silicone Hump Boot and Clamp Kit - WCF207-100

Engine & Performance

Wehrli Custom Fabrication 4" ID x 4" Long Silicone Hump Boot and Clamp Kit - WCF207-100

$58.20

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Wehrli Custom Fabrication 4" T-Bolt Clamp - WCF203-35

Engine & Performance

Wehrli Custom Fabrication 4" T-Bolt Clamp - WCF203-35

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Wehrli Custom Fabrication 4BT Cummins Individual Runner Billet Intake Manifold - WCF100253

Engine & Performance

Wehrli Custom Fabrication 4BT Cummins Individual Runner Billet Intake Manifold - WCF100253

$3,196.15

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Wehrli Custom Fabrication 5.5" T-Bolt Clamp - WCF203-5

Engine & Performance

Wehrli Custom Fabrication 5.5" T-Bolt Clamp - WCF203-5

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Wehrli Custom Fabrication 5.5" x 5" Silicone Boot - WCF203-16

Engine & Performance

Wehrli Custom Fabrication 5.5" x 5" Silicone Boot - WCF203-16

$57.23

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Wehrli Custom Fabrication 5.9L 12V Cummins Individual Runner Billet Intake Manifold - WCF100228-RAW

Engine & Performance

Wehrli Custom Fabrication 5.9L 12V Cummins Individual Runner Billet Intake Manifold - WCF100228-RAW

$1,935.15

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Wehrli Custom Fabrication 5.9L/6.7L 24V Cummins Individual Runner Billet Intake Manifold - WCF100241

Engine & Performance

Wehrli Custom Fabrication 5.9L/6.7L 24V Cummins Individual Runner Billet Intake Manifold - WCF100241

$2,497.75

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Wehrli Custom Fabrication 5" ID x 2.5" Long Silicone Boot and Clamp Kit - WCF207-101

Engine & Performance

Wehrli Custom Fabrication 5" ID x 2.5" Long Silicone Boot and Clamp Kit - WCF207-101

$38.80

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Wehrli Custom Fabrication 5" T-Bolt Clamp - WCF203-27

Engine & Performance

Wehrli Custom Fabrication 5" T-Bolt Clamp - WCF203-27

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Wehrli Custom Fabrication Billet Aluminum Coolant Tank Cap, Black Anodized - WCF100543

Engine & Performance

Wehrli Custom Fabrication Billet Aluminum Coolant Tank Cap, Black Anodized - WCF100543

$38.80

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Wehrli Custom Fabrication Billet Aluminum Coolant Tank Cap, Clear Anodized - WCF100472

Engine & Performance

Wehrli Custom Fabrication Billet Aluminum Coolant Tank Cap, Clear Anodized - WCF100472

$38.80

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Wehrli Custom Fabrication Cummins #10 JIC / -10AN Coolant Fitting - WCF205-136

Engine & Performance

Wehrli Custom Fabrication Cummins #10 JIC / -10AN Coolant Fitting - WCF205-136

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Wehrli Custom Fabrication Cummins #10 JIC / -10AN Oil Drain Block Fitting - WCF205-199

Engine & Performance

Wehrli Custom Fabrication Cummins #10 JIC / -10AN Oil Drain Block Fitting - WCF205-199

$23.28

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Wehrli Custom Fabrication Cummins #12 JIC / -12AN Coolant Fitting - WCF205-140

Engine & Performance

Wehrli Custom Fabrication Cummins #12 JIC / -12AN Coolant Fitting - WCF205-140

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Wehrli Custom Fabrication Cummins 2nd Gen Swap Oil Feed & Drain Line Kit - WCF100279

Engine & Performance

Wehrli Custom Fabrication Cummins 2nd Gen Swap Oil Feed & Drain Line Kit - WCF100279

$257.05

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Wehrli Custom Fabrication Cummins 4" High Mount S300 Down Pipe - WCF100281

Engine & Performance

Wehrli Custom Fabrication Cummins 4" High Mount S300 Down Pipe - WCF100281

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Wehrli Custom Fabrication Cummins 4" High Mount S400 Down Pipe - WCF100262

Engine & Performance

Wehrli Custom Fabrication Cummins 4" High Mount S400 Down Pipe - WCF100262

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Wehrli Custom Fabrication Cummins High Mount 2nd Gen Swap 5" Intake Kit - WCF100827

Engine & Performance

Wehrli Custom Fabrication Cummins High Mount 2nd Gen Swap 5" Intake Kit - WCF100827

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Wehrli Custom Fabrication Duramax Billet Front Engine Cover - WCF100127

Engine & Performance

Wehrli Custom Fabrication Duramax Billet Front Engine Cover - WCF100127

$2,905.15

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Wehrli Custom Fabrication Duramax Coolant Plug - WCF100025

Engine & Performance

Wehrli Custom Fabrication Duramax Coolant Plug - WCF100025

$24.25

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Wehrli Custom Fabrication Duramax Individual Runner Billet Intake Manifold - WCF100348

Engine & Performance

Wehrli Custom Fabrication Duramax Individual Runner Billet Intake Manifold - WCF100348

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