Full Duramax 2001-2004 LB7 Injector Kit
8 new nozzles plus nozzle, fuel line & solenoid-side O-rings, return line & fuel-head seals, valve seal balls, valve stem seals, valve seal washers (parts 21 & 22) and copper nozzle heat syncs.
Duramax LB7 & LLY injector rebuild kits
We know how expensive it can be to have your diesel injectors repaired. Rebuild your LB7 or LLY injectors yourself with a complete kit of new parts.
Step 1
The simplest way to tell is the 8th digit of your truck's VIN.
Identifying your EngineInjector rebuild kits
Full and Basic kits for the LB7 and LLY Duramax. LB7 kits are available with Standard OEM or Oversized +30 nozzles.
8 new nozzles plus nozzle, fuel line & solenoid-side O-rings, return line & fuel-head seals, valve seal balls, valve stem seals, valve seal washers (parts 21 & 22) and copper nozzle heat syncs.
8 new nozzles, 8 nozzle O-rings, 8 fuel line O-rings and 8 copper nozzle heat syncs.
8 new OEM size nozzles, 8 nozzle O-rings, 8 solenoid side O-rings, 8 steel internal valve seal balls and 8 copper nozzle heat syncs.
8 new OEM size nozzles, 8 nozzle O-rings, 8 fuel line O-rings and 8 copper nozzle heat syncs.
80 amp relay for the Duramax glow plug controller or intake heater controller.
Will not work in California emission trucks.
For the Duramax LB7 solenoid side of the injector.
Heat treated chrome vanadium steel. Available in 5mm and 8mm.
Injector parts for Duramax engines at wholesale prices.
The parts in our kits are covered for one year from the date of sale.
OEM stock sizing, or 30 over for the horsepower gain.
Install videos and injector info to guide your rebuild.

Rebuild it yourself
Wholesale Injectors knows how expensive it can be to have your diesel injectors repaired. It's simply what we do, and we offer a complete line of rebuilding parts for injectors to fuel your LB7 and LLY Duramax.
Whether you're simply looking for a little more power to pull your fifth wheel, or trying to eliminate that “cloud” of smoke you are creating, Wholesale Injectors has just the kits for you.
Need individual parts? LB7 injector parts · LLY injector parts
Customer testimonials
Just installed the basic kit to cure hazing problem (bad). Seems to have completely solved problem. Thanks for the pre install info, and not trying to upsell me. This truck has almost 290k on it. Very happy.
After months of research for the most cost-efficient way to solve my hazing issue . I chose wholesale injectors for their budget friendly injector rebuild kit. After rebuilding and installing my injectors my truck fired right up and runs beautiful and saved thousands of dollars ! now I have the pride of saying I completed it on my own with the help of www.wholesaleinjectors.com
My 03 lb7 truck was hazing ..I purchased the nozzles in a kit ..did the rebuild myself and no more hazing. . Dealer wanted $5000 to do the job. ..my cost $485.00 from wholesaleinjectors.com. very good parts and video thanks
I bought the complete set for my LB7, was not as hard as i thought it would be to fix. With assistance from the guys at Wholesale Injectors, My smoking issue and knocking are fixed at a fraction of the cost. Thanks Again!
products are awesome!
Not sure which kit you need?
Tell us your year and engine and we'll help you pick the right kit and nozzle size for your LB7 or LLY Duramax.