Whether you're maintaining your 2017-2019 GM 2500HD/3500HD 6.6L Duramax L5P or pushing it to new heights, our selection of fuel injectors has you covered. Here at Alligator Performance, we offer a ton of stock injectors designed for those looking to maintain factory performance and reliability, ensuring your truck continues to run smoothly for miles to come. These injectors are perfect for routine maintenance or as direct replacements to keep your engine running at its best. We also carry a handful of performance injectors that are perfect for those aiming to increase power output of their rig. These injectors deliver the precise fuel flow needed to support increased horsepower and torque, ensuring your 6.6L Duramax operates at its best even when your applications become extreme. GM Duramax Fitments: 2017, 2018, and 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
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Industrial AP54820 L5P Fuel Contamination Disaster Kit | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Industrial AP54820 L5P Fuel Contamination Disaster Kit | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Industrial Injection

Industrial AP54820 L5P Fuel Contamination Disaster Kit | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$5,037.04
S&S Diesel L5P-150-SAC-SET 150% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&S Diesel L5P-150-SAC-SET 150% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&S Diesel

S&S Diesel L5P-150-SAC-SET 150% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$4,903.60
S&S Diesel L5P-200-SAC-SET 200% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&S Diesel L5P-200-SAC-SET 200% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&S Diesel

S&S Diesel L5P-200-SAC-SET 200% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$5,501.60
S&S Diesel L5P-200-SAC 200% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&S Diesel L5P-200-SAC 200% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&S Diesel

S&S Diesel L5P-200-SAC 200% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$687.70
S&S Diesel L5P-150-SAC 150% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&S Diesel L5P-150-SAC 150% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&S Diesel

S&S Diesel L5P-150-SAC 150% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$612.95
S&S Diesel L5P-050-SAC 50% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&S Diesel L5P-050-SAC 50% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&S Diesel

S&S Diesel L5P-050-SAC 50% Over Injector | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$463.45
S&S Diesel L5P-100-SAC-SET 100% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&S Diesel L5P-100-SAC-SET 100% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&S Diesel

S&S Diesel L5P-100-SAC-SET 100% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$4,305.60
S&S Diesel L5P-050-SAC-SET 50% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&S Diesel L5P-050-SAC-SET 50% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&S Diesel

S&S Diesel L5P-050-SAC-SET 50% Over Injector Set | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$3,707.60
S&S Diesel L5P-100-SAC 100% Over Injector | 2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
S&S Diesel L5P-100-SAC 100% Over Injector | 2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

S&S Diesel

S&S Diesel L5P-100-SAC 100% Over Injector | 2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$538.20
Industrial 12678992 OEM Stock Fuel Injector | 2017-2022 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Industrial 12678992 OEM Stock Fuel Injector | 2017-2022 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial 12678992 OEM Stock Fuel Injector | 2017-2022 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Price
$293.81
Exergy E02-10706 New 30% Over Injector | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Exergy E02-10706 New 30% Over Injector | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Exergy Performance

Exergy E02-10706 New 30% Over Injector | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$488
Exergy E02-10718 New 200% Over Injector with L5P Internal Modifications | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
Exergy E02-10718 New 200% Over Injector with L5P Internal Modifications | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Exergy Performance

Exergy E02-10718 New 200% Over Injector with L5P Internal Modifications | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Price
$787

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2017-2019 6.6L Silverado & Sierra 2500HD/3500HD

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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.