2004.5-2005 GM 2500HD/3500HD 6.6L LLY Duramax Injectors

Enhancing your fuel delivery system with high-performance injectors will significantly improve your 6.6L Duramax's power, reliability, and efficiency. At Alligator Performance, we offer a wide selection of aftermarket injectors specifically designed for your truck. These injectors are perfect for replacing worn factory units, helping your truck regain its performance and dependability. Boost your truck’s fuel delivery capacity and reliability with our premium injectors for the GM 6.6L Duramax! Pair your new injectors with our selection of Fuel Upgrades.  GM Duramax Fitments: 2004, 2005 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>2004.5-2005 6.6L LLY
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S&S Diesel LLY-400SAC-R-SET Remanufactured 400% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
S&S Diesel LLY-400SAC-R-SET Remanufactured 400% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

S&S Diesel

S&S Diesel LLY-400SAC-R-SET Remanufactured 400% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: SASLLY-400SAC-R-SET
$5,865.60
S&S Diesel LLY-400SAC-SET 400% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
S&S Diesel LLY-400SAC-SET 400% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

S&S Diesel

S&S Diesel LLY-400SAC-SET 400% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: SASLLY-400SAC-SET
$6,416.80
S&S Diesel LLY-450SAC-R-SET Remanufactured 450% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
S&S Diesel LLY-450SAC-R-SET Remanufactured 450% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

S&S Diesel

S&S Diesel LLY-450SAC-R-SET Remanufactured 450% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: SASLLY-450SAC-R-SET
$5,948.80
S&S Diesel LLY-450SAC-SET 450% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
S&S Diesel LLY-450SAC-SET 450% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

S&S Diesel

S&S Diesel LLY-450SAC-SET 450% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: SASLLY-450SAC-SET
$6,510.40
S&S Diesel LLY-500SAC-R-SET Remanufactured 500% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
S&S Diesel LLY-500SAC-R-SET Remanufactured 500% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

S&S Diesel

S&S Diesel LLY-500SAC-R-SET Remanufactured 500% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: SASLLY-500SAC-R-SET
$6,073.60
S&S Diesel LLY-500SAC-SET 500% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
S&S Diesel LLY-500SAC-SET 500% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

S&S Diesel

S&S Diesel LLY-500SAC-SET 500% Over Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: SASLLY-500SAC-SET
$6,624.80
Industrial 504COBRA5175 Competition Injector | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Industrial 504COBRA5175 Competition Injector | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Industrial Injection

Industrial 504COBRA5175 Competition Injector | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: IIS504COBRA5175
$695.44
Fleece FPE-FL-LLY-45 Injector #4 and #5 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-LLY-45 Injector #4 and #5 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-LLY-45 Injector #4 and #5 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Fleece Performance Products

Fleece FPE-FL-LLY-45 Injector #4 and #5 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: FLCFPE-FL-LLY-45
$69.99
Fleece FPE-FL-LLY-36 Injector #3 and #6 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-LLY-36 Injector #3 and #6 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-LLY-36 Injector #3 and #6 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Fleece Performance Products

Fleece FPE-FL-LLY-36 Injector #3 and #6 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: FLCFPE-FL-LLY-36
$69.99
Fleece FPE-FL-LLY-27 Injector #2 and #7 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-LLY-27 Injector #2 and #7 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-LLY-27 Injector #2 and #7 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-LLY-27 Injector #2 and #7 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Fleece Performance Products

Fleece FPE-FL-LLY-27 Injector #2 and #7 Line | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: FLCFPE-FL-LLY-27
$69.99
Fleece FPE-FL-DMAX-LLY-SET Injector Line Kit | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-DMAX-LLY-SET Injector Line Kit | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Fleece FPE-FL-DMAX-LLY-SET Injector Line Kit | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Fleece Performance Products

Fleece FPE-FL-DMAX-LLY-SET Injector Line Kit | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

SKU: FLCFPE-FL-DMAX-LLY-SET
$489
Wehrli 100229 High Flow Rail Fitting - Short | 2001-2005 & 11-16 GM Silverado/Sierra 2500HD/3500HD Duramax 6.6L Duramax
Wehrli 100229 High Flow Rail Fitting - Short | 2001-2005 & 11-16 GM Silverado/Sierra 2500HD/3500HD Duramax 6.6L Duramax

Wehrli Custom Fab

Wehrli 100229 High Flow Rail Fitting - Short | 2001-2005 & 11-16 GM Silverado/Sierra 2500HD/3500HD Duramax 6.6L Duramax

SKU: WCF100229
$39

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