Description
Product Overview
The johntruck Duramax LB7 Fuel Injector Kit is engineered for 2001‑2004 Chevrolet and GMC trucks equipped with the Duramax LB7 engine. Constructed from high‑quality copper and high‑strength steel, the kit provides excellent corrosion resistance and long‑lasting performance. It includes 34 pieces: 16 external O‑rings, 8 tip washers, 8 paired banjo washers, and additional components needed for a complete seal replacement. Each part is precision‑machined to match OEM specifications, ensuring a perfect fit and reliable fuel delivery.
Usage
This kit is intended for professional mechanics and DIY enthusiasts performing injector maintenance or replacement on Duramax LB7 diesel engines. Ideal for routine service, troubleshooting low‑fuel pressure, or rebuilding injector seals, the kit streamlines the process by supplying every necessary component, eliminating the need to source individual parts. Suitable for workshop environments and garage repairs alike.

Why Choose Us
johntruck combines premium materials with rigorous quality control to deliver a kit that meets or exceeds OEM standards. The copper and steel construction offers superior durability against diesel fuel and oil exposure. Backed by a 1‑year warranty and responsive customer support, the kit provides confidence and value, reducing downtime and preventing future leaks.
Key Features
- Complete 34‑piece kit eliminates the need for separate purchases.
- High‑grade copper and steel ensure long‑term corrosion resistance.
- Precision‑fit O‑rings and washers guarantee a leak‑free seal.
- Designed specifically for 2001‑2004 Chevy/GMC Duramax LB7 engines.
- 1‑year warranty and 30‑day return policy for peace of mind.
FAQ
What engines are compatible with this kit?
The kit fits 2001‑2004 Chevrolet and GMC trucks equipped with the Duramax LB7 diesel engine.
Do I need any special tools to install the kit?
Standard hand tools such as wrenches, screwdrivers, and a torque wrench are sufficient. No specialized equipment is required.
How many O‑rings are included?
The kit contains 16 external O‑rings, providing two for each of the 8 injectors.
Is the kit covered by a warranty?
Yes, johntruck offers a 1‑year warranty covering manufacturing defects, plus a 30‑day return option.
Can this kit be used for a complete injector rebuild?
While the kit supplies all sealing components, a full rebuild may require additional internal parts not included in this package.





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