LLY Performance Fuel Injector


2004.5 - 2005 Duramax Diesel with LLY Engine

Brand NEW 2004/2005 Duramax Injector from the original equipment manufacturer.

50HP, 100HP, and larger!

(Please note that some 2004 Duramax engines use the LB7 engine and a different injector. To identify your engine, check the eight digit of the VIN - if you have an LLY engine, it will be a "2")


- Duramax LLY performance injectors MUST be installed as a set!

- It is YOUR responsibility to be aware of your local laws regarding vehicle modifications.Therefore these 2004/2005 Duramax injectors are sold for off road use ONLY (racing, pull truck events, etc)

- Please note that Duramax LLY performance injectors are build to order


50 HP :

Our most popular injector. These injectors are a 'mild performance' upgrade - great for a daily driver or for towing purposes. The 50HP injector is very popular because no other modifications are required - install and drive!

Nozzle flow is 20% over stock - the industry considers this a 50HP nozzle and this has proven realistic in real world experience. Results can vary depending on tune and condition, and other modifications. Your power (and mileage) may vary up or down!

100 HP:

For the more serious performance enthusiast, these injectors flow 45% over stock.


We also offer 65% over and 100% over injectors for very serious performance builds. Custom sizes may be available also. High flow injectors may require additional fuel system modifications, such as increased lift pump capacity, and stroker or dual CP3 pumps. Please do your research carefully before purchasing extreme high-flow injectors.

Please note that Duramax LLY performance injectors will ship to exact match credit card address or PayPal address only.

Item #: B0445120027P
Availability: Currently out of stock - sorry!
Injector Option:

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