2001-2004 6.6 Duramax LB7 Fuel Rail PlugFits: 2001 2004 6. 6 Duramax Item Type: Industrial Injection 6. 6 Duramax Fuel Rail Plug Brand: Industrial Injection Part Number: 412512 FEATURES: Machined from 304 Stainless 1 Year Warranty Pressure relief valves in the factory fuel system were designed to drop rail pressure if pressure ever exceeded a preset point. Over time, the spring in the relief valve can get worn out due to continuous pressure of daily use, causing it to open even with stock

Fuel Efficiency: Optimized turbocharger design leads to better fuel economy

57mm (76/70)

injector seal failures

and repeat tear-downs

BorgWarner S200SX-E SuperCore 12769095003

5 - 2007 Engine years

this direct-fit replacement is precision-balanced

Factory LB7 injector cups are prone to loosening and leaking over time

Replaces Factory Turbo Model: KP39 (3K)

Industrial Injection LLY Duramax Stage 2 Long Block Engine (2004

Rocker arms and pushrods not included

and over 40 years of diesel engine expertise