2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Air Intakes & Intercoolers

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Wehrli 100717 Dry Air Filter | 2001–2016 GM Silverado/Sierra 6.6L Duramax LB7/LLY/LBZ/LMM/LML | 2003-2018 RAM 2500/3500 Cummins
Wehrli 100717 Dry Air Filter | 2001–2016 GM Silverado/Sierra 6.6L Duramax LB7/LLY/LBZ/LMM/LML | 2003-2018 RAM 2500/3500 Cummins

Wehrli Custom Fab

Wehrli 100717 Dry Air Filter | 2001–2016 GM Silverado/Sierra 6.6L Duramax LB7/LLY/LBZ/LMM/LML | 2003-2018 RAM 2500/3500 Cummins

SKU: WCF100717
Price
$72.75
Fleece FPE-L5P-MAP-SPR MAP Sensor Spacer with Boost Reference Port | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Fleece FPE-L5P-MAP-SPR MAP Sensor Spacer with Boost Reference Port | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Fleece Performance Products

Fleece FPE-L5P-MAP-SPR MAP Sensor Spacer with Boost Reference Port | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: FLCFPE-L5P-MAP-SPR
Sale price
$68.99
Regular price
$78.99
Wehrli 100473 Black Anodized Intake Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100473 Black Anodized Intake Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100473 Black Anodized Intake Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCF100473
Price
$31.04
PPE 115010420 Black Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 115010420 Black Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 115010420 Black Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE115010420
Sale price
$22.49
Regular price
$32.49
S&B KF-1076 intake Replacement Oiled Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
S&B KF-1076 intake Replacement Oiled Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

S&B Filters

S&B KF-1076 intake Replacement Oiled Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: SABKF-1076
Sale price
$69
Regular price
$79
S&B KF-1076D Intake Replacement Dry Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&B KF-1076D Intake Replacement Dry Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&B Filters

S&B KF-1076D Intake Replacement Dry Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: SABKF-1076D
Sale price
$69
Regular price
$79
BD Diesel 1045630 Turbo Intake Horn | 2017-2022 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
BD Diesel 1045630 Turbo Intake Horn | 2017-2022 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

BD Diesel

BD Diesel 1045630 Turbo Intake Horn | 2017-2022 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: BDD1045630
Sale price
$163.95
Regular price
$169.95
Wehrli 100410 Stage 1 Wehrli High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Wehrli 100410 Stage 1 Wehrli High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Wehrli Custom Fab

Wehrli 100410 Stage 1 Wehrli High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: WCF100410-GB
Price
From $678.03
S&B WF-1066 Pre-Filter Wrap for S&B KF-1076 Filters | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
S&B WF-1066 Pre-Filter Wrap for S&B KF-1076 Filters | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

S&B Filters

S&B WF-1066 Pre-Filter Wrap for S&B KF-1076 Filters | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: SABWF-1066
Sale price
$29.95
Regular price
$39.95
PPE 115010400 Raw Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 115010400 Raw Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 115010400 Raw Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE115010400
Sale price
$17.99
Regular price
$19.99
S&B 75-5136D Cold Air Intake with Dry Filter | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
S&B 75-5136D Cold Air Intake with Dry Filter | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

S&B Filters

S&B 75-5136D Cold Air Intake with Dry Filter | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SAB75-5136D
Price
$379
Wehrli 100365 3" inch Driver Hot Side Intercooler Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Wehrli 100365 3" inch Driver Hot Side Intercooler Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Wehrli Custom Fab

Wehrli 100365 3" inch Driver Hot Side Intercooler Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: WCF100365-GB
Price
From $334.65
PPE 115010424 Gold Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 115010424 Gold Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 115010424 Gold Resonator Delete Plug | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE115010424
Sale price
$22.49
Regular price
$32.49
Wehrli 100414 Stage 2 High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Wehrli 100414 Stage 2 High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Wehrli Custom Fab

Wehrli 100414 Stage 2 High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: WCF100414-GB
Price
From $1,512.23
aFe 50-70056D Momentum HD Cold Air Intake System with Pro DRY S Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
aFe 50-70056D Momentum HD Cold Air Intake System with Pro DRY S Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

AFE Power

aFe 50-70056D Momentum HD Cold Air Intake System with Pro DRY S Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: AFE50-70056D
Sale price
$433
Regular price
$541.25
aFe 46-20444-B BladeRunner 3 inch Aluminum Hot & Cold Charge Pipe Kit | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
aFe 46-20444-B BladeRunner 3 inch Aluminum Hot & Cold Charge Pipe Kit | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

AFE Power

aFe 46-20444-B BladeRunner 3 inch Aluminum Hot & Cold Charge Pipe Kit | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: AFE46-20444-B
Price
$689.85
Wehrli 100381 3.5" inch Passenger Cold Side Intercooler Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Wehrli 100381 3.5" inch Passenger Cold Side Intercooler Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Wehrli Custom Fab

Wehrli 100381 3.5" inch Passenger Cold Side Intercooler Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: WCF100381-GB
Price
From $373.45
Alligator Performance Stage 1 Intake & Tuner Power Kit | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Alligator Performance Stage 1 Intake & Tuner Power Kit | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Alligator Performance

Alligator Performance Stage 1 Intake & Tuner Power Kit | 2020-2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: ALG-Kit-Power-S1-11
Sale price
$1,249
Regular price
$1,473.95
aFe 50-70056T Momentum HD Cold Air Intake System with Pro 10R Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
aFe 50-70056T Momentum HD Cold Air Intake System with Pro 10R Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

AFE Power

aFe 50-70056T Momentum HD Cold Air Intake System with Pro 10R Filter | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: AFE50-70056T
Sale price
$420
Regular price
$525
PPE 515900250 Billet Aluminum Couplers 2.5" inch OD with 1/8 inch NPT Bung | Universal
PPE 515900250 Billet Aluminum Couplers 2.5" inch OD with 1/8 inch NPT Bung | Universal

PPE

PPE 515900250 Billet Aluminum Couplers 2.5" inch OD with 1/8 inch NPT Bung | Universal

SKU: PPE515900250
Price
$22.49
Wehrli 100720 4 inch Intake Resonator Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100720 4 inch Intake Resonator Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100720 4 inch Intake Resonator Pipe Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCF100720-GB
Price
From $227.95
Wehrli 100418 Stage 3 High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Wehrli 100418 Stage 3 High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Wehrli Custom Fab

Wehrli 100418 Stage 3 High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: WCF100418-GB
Price
From $1,828.45
Wehrli 100833 3.5" inch Custom Turbo Intake Horn | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100833 3.5" inch Custom Turbo Intake Horn | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100833 3.5" inch Custom Turbo Intake Horn | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCF100833-GB
Price
From $226.98

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Unlock more performance hidden under the hood of your 2020-2025 GM 6.6L Duramax L5P with these premium air intake and intercooler upgrades from Alligator Performance! In this section, you'll find a range of cold air intakes, replacement filters, cleaning kits, intercoolers, and intercooler pipes and accessories—all designed to improve airflow, boost engine efficiency, and maximize horsepower. Whether you're looking for a simple filter upgrade or a complete intercooler system overhaul, these upgrades will help your GM 2500HD/3500HD handle everything from daily driving to extreme towing and off-road adventures. Pair your new intake upgrades with some additional Engine Upgrades or Exhaust Upgrades for an even more thrilling driving experience.  GM Duramax Fitments: 2020, 2021, 2022, 2023, 2024, 2025 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. 

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