2004.5-2005 Duramax LLY Injector Replacement Kit – Bosch ® New


$3,379.97 $3,099.99

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Note: Must return old fuel lines to receive full core credit. 

LLY 2004.5-2005 Chevrolet/GMC 2500/3500/4500/5500 6.6 Diesel Vin Code “2”

LLY Injector Replacement Kit – New

BOSCH ®: 0 445 120 027

These injectors are BRAND NEW from BOSCH ®. These are the most up to date version of the LLY injector. They are the highest quality, most reliable injectors available for the LLY Motor.

Replaces part numbers:

BOSCH ®: 0 986 435 504

GM: 97780144, 97303657

Each injector comes with a three-year warranty. Information about warranty policies can be found HERE.

Each Injector includes O-rings and copper crush washers necessary for installation.


Replace GM Part #’s 97378825, 97378826, 97378827, 97378828

Full set (8) We highly recommend replacing these to ensure the longest lifespan for your new injectors. Re-using old, rusty, pitted fuel lines can lead to contamination and damage to your new injectors, and possibly leaks. Learn more by visiting our BLOG.


Replaces GM Part # 97328733 & 98062291

Genuine BOSCH ® OEM Brand New return line assembly for LLY/LBZ/LMM Duramax applications. These return line assemblies are notorious for breaking during removal or leaking due to cracks and heat stress.  Replacing the return line assembly during injector installation helps prevent contamination issues and leaks due to cracked or brittle hoses and fittings.