The 1st Generation Sierra propelled GMC into the 21st century as its best-selling vehicle. With optional LS power, the Sierra can be just as capable at the track as it is the worksite. Whether you're building an all-around street machine, off-roader, or track weapon, Holley has the parts you need to make your dream a reality.

Hi-temp, race, street, motorcycle or stock replacement - we have the right wire for your application!