Holley HP EFI ECU and Harness Kits 550-604 Front-Disc-Brakes 1968-1972 Buick Sportwagon 5

1968-1972 Buick Sportwagon 5

00-inch stainless steel tubing and uses the factory hanger locations for an easy installation

2004-2010 GMC Sierra 2500 HD

1999 - 2006 GMC Sierra 1500

Holley HP EFI ECU and Harness Kits 550-604 Front-Disc-Brakes 1968-1972 Buick Sportwagon 5MPFI HP ECU AND HARNESS KIT Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine