Wehrli WCF100093 Twin CP3 Controller | 01-05 Duramax LB7/LLY

2001-2005 Duramax Twin CP3 Pump Controller to operate dual CP3's. A second CP3 pump adds volume to your high pressure fuel system to maintain consistent and smooth rail pressure in high horsepower applications. This product provides the necessary microprocessor control to allow use of a 2nd belt driven CP3 pump in conjunction with the stock location, gear driven CP3 for a dramatic increase in pumping capacity and volume while reducing drive load on a single pump for improved reliability.