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The Industrial Injection Modified CP3 pump for 2004.5–2005 Chevrolet Duramax LLY is a new, calibrated replacement at a 42% modification level. Built to match CP3 interfaces for LLY applications, the unit offers increased fuel delivery over stock while remaining a direct-fit swap. Supplied new, it provides a practical fueling upgrade for Duramax LLY trucks requiring modest additional flow.
Industrial Injection 04.5-05 Chevrolet Duramax LLY New Modified Cp3 42% Injection Pump
