INDUSTRIAL INJECTION 502COBRA0255 GM COMPETITION INJECTOR — 2001–2004 DURAMAX LB7 — 730CC MAX OUTPUT

Go big on fuel delivery for serious competition builds. The INDUSTRIAL INJECTION 502COBRA0255 is a 730cc max-output competition injector engineered for the 2001–2004 GM 6.6L Duramax LB7. When paired with the right high-flow CP3, lift pump, and tuning, this single injector supports extreme horsepower targets at the track or on the dyno.

Fitment

• 2001–2004 Duramax LB7 (Chevy Silverado/GMC Sierra 2500HD/3500HD) — 6.6L

What’s Included

• (1) Industrial Injection competition injector — 730cc max output

Recommended Supporting Parts (CPP internal links)

• S&S 14mm CP3 (NEW) — 2001–2010 LB7/LLY/LBZ
• S&S 12mm High-Speed CP3 — 2001–2010 LB7/LLY/LBZ
• S&S 10mm High-Speed CP3 — 2001–2010 LB7/LLY/LBZ
• AirDog II-5G DF-100 Lift Pump — 2001–2010 Duramax
• LB7 Injector & Return Washers — 2001–2004
• ARP 230-4201 Head Stud Kit — 2001–2016 Duramax
• Shop All GM Duramax Parts

Notes

• Competition use only. Custom tuning and adequate fuel supply (lift pump + high-flow CP3) are required.
• Whenever LB7 injectors are serviced, replace sealing/return washers and follow clean-room practices to prevent contamination.

FAQ

No. This is a competition-only, high-flow injector and is not intended for on-highway emissions-regulated use.

Yes. A 730cc injector requires a high-output CP3 (10mm/12mm/14mm as appropriate) and a quality lift pump to maintain commanded rail pressure.

This listing is for a single injector. For matched sets, contact us or browse our LB7 injector sets and fueling packages on cppdiesel.com.

Always use new sealing/return washers and verify fuel system cleanliness. Consider fresh injector lines if contaminated or high mileage.