Upgrade Your Vehicle's Performance with our S&S Diesel LLY Duramax Injectors (2004, 2005). Experience the remarkable difference with our proprietary nozzle honing process that guarantees clean and consistent holes for optimal fuel delivery.

Each set of injectors is meticulously flow-matched to a 1% variance, adhering to OE standards for reliability. Our injectors undergo rigorous testing across four different pressure/energizing points to ensure precision, with injection profiles aligned for enhanced performance.

Flow-matched to a precise 3% variance per set using Viscor SAE-J967 at 40 degrees C and 100 bar, our injectors come with custom-matched build specifications that align perfectly with the nozzle flow rate for each size. For sizes 250% (3200 cc/min) and above, we include internal body modifications to enhance the injection rate shape and improve the open/closing time.

Available in both brand new and Bosch remanufactured bodies, our injectors are sourced directly from Bosch, ensuring unmatched quality. The industry standard now recognizes a percentage increase in nozzle flow over stock as the sizing convention, providing you with optimal performance options.

Available sizes include: TorqueMaster, 30%, 45%, 60%, 80%, 100%, 150%, 200%, 250%, 300%, 350%, 400%, 450%, and 500%.

Vehicle Fitment by Year

• 2004 GMC Sierra 2500HD – 6.6L Duramax
• 2004 GMC Sierra 3500HD – 6.6L Duramax
• 2004 Chevrolet Silverado 2500HD – 6.6L Duramax
• 2004 Chevrolet Silverado 3500HD – 6.6L Duramax
• 2005 GMC Sierra 2500HD – 6.6L Duramax
• 2005 GMC Sierra 3500HD – 6.6L Duramax
• 2005 Chevrolet Silverado 2500HD – 6.6L Duramax
• 2005 Chevrolet Silverado 3500HD – 6.6L Duramax

 

Core Charge Option 1: Customer to send in core to receive product

Core Charge Option 2: Additional payment is sent in, new products are delivered, additional payment is returned when core is received.

SEE CORE RETURN POLICY

Upgrade your performance with S&S LLY Duramax Injectors!