INDUSTRIAL INJECTION RTF26402 LB7 INJECTOR & RETURN KIT — 2001–2004 GM 6.6L DURAMAX (SERVICES 4 INJECTORS)

Restore proper sealing on your LB7 with the INDUSTRIAL INJECTION RTF26402 Injector & Return Kit. This service kit includes the critical seals and washers needed during injector R&R on 2001–2004 GM 6.6L Duramax LB7 trucks. Each kit services four injectors—order two kits for a full set of eight.

Fitment

• 2001–2004 GM 2500/3500 HD with 6.6L Duramax LB7

What’s Included

• Injector return line seals (LB7)
• Injector O-rings
• Copper nozzle/crush gaskets for the injector tip to head
• Services four injectors (two kits required for all eight)

Why This Kit

• LB7-specific sizing and materials for long-lasting seals
• Pre-packaged for 4-cylinder service to simplify parts planning
• Ideal for leak fixes, injector replacement, or line refresh

Recommended Parts (CPP Internal Links)

• INDUSTRIAL INJECTION RTF26401 Injector & Return Washers (LB7)
• BD Diesel 1050141 LB7 Injector Install Kit
• XDP XD476 Fuel Return Line Banjo Bolt Kit (Set of 8)
• GM Duramax Fuel Injection Lines (Category)
• S&S Diesel LB7 Injector Set (NEW)

Helpful Notes

• One kit = four injectors. For a complete job, purchase two kits.
• Clean sealing surfaces thoroughly; lube O-rings with clean diesel or appropriate assembly lube.
• Torque fasteners to OE spec; verify banjo bolt sealing on the return rail.

FAQ

No. This kit is tailored for 2001–2004 LB7 only. Use the LB7-specific kits listed above.

Each RTF26402 services four injectors. Order two kits to service all eight injectors.

Return line seals, injector O-rings, and copper nozzle/crush gaskets for the injector tip to the head—everything needed around the injector for proper sealing during service.

We recommend replacing them. Reusing crush washers risks combustion gas leaks and poor injector sealing.