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UnderDog Diesel » 2026
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- Year: 2026
View Universal items for: 2026
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This item ships Ground regardless of shipping method selected. No exceptions.
Price: $685.00
No Image Available
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $785.00
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This item ships Ground regardless of shipping method selected. No exceptions.
Price: $485.00
Description: This kit is an upgrade to an existing cheap Kit, this is not a complete kit by itself.
Item #: L5P-COOLANT-BYPASS-UPGRADE
Condition:
New
Price: $269.00
Lead Time may Vary
Price: $799.99
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Description: 304SS Polished Finish
(This product may ship from Canada, and may be subject to brokerage and duty fees.)
Item #: 17-26-304SS-POLISHED
Condition:
New
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $1,625.00
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Description: (This product may ship from Canada, and may be subject to brokerage and duty fees.)
Item #: 17-26-304SS
Condition:
New
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $1,369.00
Description: Filters Included
Item #: VSE-L5P-FSS
Condition:
New
Raw Aluminum - 5 business day lead time | Midnight Black - 10-15 business day lead time | Ground shipping only
Price: $478.99
Description: Includes:
-Install Kit
-Banks Oil Pan with Pre-Installed Oil Drain (If truck is equipped with a lift kit, or you already have an aftermarket Oil Pan, please contact us)
-10 Bar MAP Sensor Kit...More Details »
Item #: VSE-17-26-L5P-COMPOUND-KIT
Condition:
New
Free Ground Shipping
Price: $7,699.00
Item #: VSE-ITK-HRN-STOCK-65
Condition:
New
Lead time may vary.
Price: $299.00
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This item ships Ground regardless of shipping method selected. No exceptions.
Price: $485.00
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Description: Fits Leaf Spring & Coil Spring Models
Will Not fit Air-Ride Suspension Models
Not for C&C
Item #: 19+-6.7C-4
Condition:
New
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $685.00
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Description: Fits Leaf Spring Trucks ONLY (not compatiable with 2500)
Will Not fit Air-Ride Suspension Models
Not for C&C
Item #: 19+-6.7C-5
Condition:
New
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $785.00
No Image Available
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $485.00
NEW!
Description: Includes :
- ARP Manifold Bolt Kit
- Gaskets (Turbo, EGR, Manifold)
21% Reduction in Drive Pressure (Higher Flow)
+3PSI Boost Pressure
+4 LB/M Increase in measured Air Mass
+15 Avg. HP...More Details »
Item #: VSE-LM2-LZ0-MANIFOLD
Condition:
New
Price: $995.95
No Image Available
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $785.00
NEW!
Description: Aftermarket Charge Piping Required! Will not work with factory piping.
Item #: VSE-L5P-HP-INTERCOOLER
Condition:
New
4-6 Week Lead Time
This item ships straight from VSE.
Price: $2,599.95
Description: 47mm x 66mm Compressor (Stock is 42.5mm x 63mm)
Item #: VSE-LM2-LZ0-TURBO
Condition:
New
Price: $2,899.99
Item #: VSE-LM2-LZ0-THR-VLV
Condition:
New
Raw Aluminum - ships in 3-5 business days. Ground shipping only
Price: $149.99
Description: Fitment
ALL 2020-2026 3.0L GM Duramax equipped 1500 Sierra / Silverado
ALL 2020-2026 3.0L GM Duramax equipped SUVs
Item #: LM2-LZ0-CATCH-CAN
Condition:
New
Raw Aluminum - 3-5 days to ship. Midnight Black - 10-15 days. Ground shipping only
Price: $399.99
No Image Available
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $950.00
No Image Available
NEW!
Description: Fits most 2023–2026 Ford F250/F350 6.7L Powerstroke
Does not fit Regular Cab trucks
Includes Downpipe
Item #: 23-26-6.7F-4WM-SS
Condition:
New
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $850.00
No Image Available
Description: Fits most 2023–2026 Ford F250/F350 6.7L Powerstroke
Does not fit Regular Cab trucks
Includes Downpipe
Item #: 23-26-6.7F-5-SS
Condition:
New
This item ships Ground regardless of shipping method selected. No exceptions.
Price: $925.00
Description: Quality Parts and Tuning, not a Cheap Chinese Kit.
All Tuning is via the TDN App, no Laptop Required!
All SALES OF THIS PRODUCT ARE FINAL. NO REFUNDS, RETURNS, OR EXCHANGES PERMITTED.
Item #: 24-L5P-Performance-Kit
Condition:
New
Free Ground Shipping
Price: $4,119.90
Description: - 4-inch, 304 stainless steel mandrel-bent tubing
- 5.5-inch, double-wall exhaust tip
- Kit comes complete with all hardware required for installation
- Available in polished and black ceramic finish
Item #: 117020420
Condition:
New
Price: $219.99
Sale: $197.99
Save: 10%
Save: $22.00
Description: - 4-inch, 304 stainless steel mandrel-bent tubing
- 5.5-inch, double-wall exhaust tip
- Kit comes complete with all hardware required for installation
- Available in polished and black ceramic finish
Item #: 117020430
Condition:
New
Price: $199.99
Sale: $179.99
Save: 10%
Save: $20.00
Description: Fitment Note:
Stock Cold Side Piping
WCFAB Cold Side Piping (Uses Billet Adapter/Coupler that came with the WCFAB Piping)
Item #: 24-25-TV-UPG-STOCK
Condition:
New
Price: $259.99
Item #: GEN2-L5P-PEDESTAL-KIT
Condition:
New
Price: $449.99
Raw - 5-7 Business Day Lead Time | Black - 10-20 Business Day Lead Time
Price: $398.99
Description: 3D Printed in House out of ASA-CF for a durability & heat resistance
Pack of 3 Hose Separators for 5/8" Hose
Item #: UDD-5/8-HOSE-SEP-3PACK
Condition:
New
Price: $8.99
Description: Allows for complete removal of the flexible line
Caps off the hardline at the frame.
Also can be used on the DEF Tank on 20+ Trucks.
Truck must be tuned for off-road use only.
Item #: UDD-D49-9.49
Condition:
New
Plenty in Stock.
Price: $5.99
Description: All SALES OF THIS PRODUCT ARE FINAL. NO REFUNDS, RETURNS, OR EXCHANGES PERMITTED.
MPVI4 or RTD4 REQUIRED for use with the TDN App, any other model of HP Tuners Device will not work....More Details »
Item #: AITP-HPT-24L5P-SMC
Condition:
New
Price: $1,800.00
Description: All SALES OF THIS PRODUCT ARE FINAL. NO REFUNDS, RETURNS, OR EXCHANGES PERMITTED.
MPVI4 or RTD4 REQUIRED for use with the TDN App, any other model of HP Tuners Device will not work....More Details »
Item #: AITP-HPT-24L5P-TCM
Condition:
New
Price: $350.00
Injection Pump Install Kit
Description: Includes all gaskets/seals relative to an injection pump replacement on 2011-2024 6.7L Powerstrokes
Item #: AP0190
Condition:
New
Price: $53.23
Item #: AP57022
Condition:
New
Price: $6,319.20
Item #: AP57022NP
Condition:
New
Price: $4,138.14
Description: Limited Support Package: This package provides access to all tunes for 4 weeks. After 4 weeks, the tunes installed in the vehicle remain. This can be upgraded to the Full Support Package at...More Details »
Item #: AMDP-23-26-POWERSTROKE-EZLYNK
Condition:
New
Price: $1,352.00
Description: -Huge increase in size and flow over stock and competitors (3.5" vs 2.5")
-Hot Side flows 490 CFM @ 12" vs stock 388 CFM
-Cold Side flows 635 CFM @ 12" vs stock 435 CFM
-Constant 3.5in diameter...More Details »
Item #: 26005
Condition:
New
Price: $775.56
Sale: $698.00
Save: 10%
Save: $77.56
Description: Prevents expensive stock charge pipe failure
Huge increase in size and flow over stock and competitors
Constant 3.5in diameter tubing for the best flow
Billet aluminum couplers maintain boost...More Details »
Item #: 26008
Condition:
New
Price: $598.00
Engine Oil Pan
Description: For 2020-2026 Chevy/GMC 2500/3500 6.6L Diesel L5P
If the truck has a lift kit, contact us to verify fitment before purchase.
Item #: 35137-B
Condition:
New
Currently on Back Order
Price: $476.67
Sale: $429.00
Save: 10%
Save: $47.67
Turbo Inlet Horn, Intake Manifold
Description: The Banks Monster-Ram Turbo Inlet for the 2017-2025 Duramax L5P is the only intake elbow that outperforms stock without the destructive effects of turbo surge. More than a year in development, the...More Details »
Item #: 42792-R
Condition:
New
Limited Supply: Only 3 Left!
50-State Emission Compliant CARB-EO D-161-158
Price: $332.22
Sale: $299.00
Save: 10%
Save: $33.22
Description: For 2020-2026 Chevy/GMC 2500/3500 6.6L Diesel
with 10 speed Allison 10L1000 Transmission
Will NOT work with AEV skid plates.
Item #: 35148-B
Condition:
New
Price: $476.67
Sale: $429.00
Save: 10%
Save: $47.67
Cold Air Intake
Description: Fits 2025-2026 L5P
Removes restrictions, sharpens turbo response, and improves fuel economy.
Item #: 42297-D
Condition:
New
Price: $550.00
Sale: $495.00
Save: 10%
Save: $55.00
Cold Air Intake
Description: Fits 2025-2026 L5P
Removes restrictions, sharpens turbo response, and improves fuel economy.
Item #: 42297
Condition:
New
Price: $550.00
Sale: $495.00
Save: 10%
Save: $55.00
NEW!
Description: - New Turbo Actuator for 2024-2026 L5P Duramax OEM/VGT Turbos
Item #: CPS206-117
Condition:
New
Price: $649.00
Description: - Airflow Capable of Supporting up to 700HP
- Custom Billet Compressor Wheel
- Turbine Wheel and Nozzle Ring Upgrades
- Improved EGT Control
- Compressor and turbine wheel durability upgrades...More Details »
Item #: CPS200289
Condition:
New
Price: $3,149.00
Description: - Airflow capable of supporting up to 750HP
- Compressor and Turbine Wheel durability upgrades
- Black Anodized Custom Billet Compressor Wheel
- Turbine Wheel and Nozzle Ring Upgrades
- 67mm -...More Details »
Item #: CPS200329
Condition:
New
Price: $3,549.00
Description: - Extra airflow to make 80-100rwhp over 'Tune only' L5P
- Works with box tuners, custom tuning, or without tuning
- Major EGT control improvements compared to stock
- 62.5mm - 7+7 Blade Extended...More Details »
Item #: CPS200157
Condition:
New
Price: $2,149.00
NEW!
Description: - CNC Precision Machined Black Anodized Billet Aluminum Plate
- Clean, Professional Appearance
- Made from the highest-quality materials
- Intelligent design - Swivel Air Chuck Fitting Improves...More Details »
Item #: CPS200614
Condition:
New
Price: $99.00
NEW!
HP Tuners Custom Tuning
Description: All SALES OF THIS PRODUCT ARE FINAL. NO REFUNDS, RETURNS, OR EXCHANGES PERMITTED.
This is for Global B Vehicles ONLY! Requires E66 Unlock Service
-MVPI3 / MVPI4 or RTD required for...More Details »
Item #: DSP-GM-HPT-21-26-LM2/LZ0
Condition:
New
Price: $1,000.00
HP Tuners Custom Tuning
Description: All SALES OF THIS PRODUCT ARE FINAL. NO REFUNDS, RETURNS, OR EXCHANGES PERMITTED.
MPVI4 or RTD4 REQUIRED for use with the TDN App, any other model of HP Tuners Device will not work....More Details »
Item #: DSP-GM-HPT-24
Condition:
New
Price: $1,100.00
HP Tuners Custom Tuning
Description: All SALES OF THIS PRODUCT ARE FINAL. NO REFUNDS, RETURNS, OR EXCHANGES PERMITTED.
MPVI4 or RTD4 REQUIRED for use with the TDN App, any other model of HP Tuners Device will not work....More Details »
Item #: DSP-GM-HPT-24-TCM
Condition:
New
Price: $350.00
Description: Tuning Required
Now with Flush Flange at the Turbocharger
Item #: 255-01301
Condition:
New
Price: $335.00
Item #: 255-04604
Condition:
New
Price: $749.99
Description: Universal Fitment
Fits 4" Systems
20" Length
Item #: 355-03400
Condition:
New
Price: $150.00
Description: Universal Fitment
Fits 5" Systems
20" Length
Item #: 355-03500
Condition:
New
Price: $180.00
Description: Universal Fitment
Fits 4" Systems
20" Length
Item #: 555-03401
Condition:
New
Price: $175.00