These Pro-Clamp wire separators from MSD keep your spark plug wires neatly organized and away from damaging engine heat sources. Each separator features secure grooves for each wire and a bracket which sandwiches the wires into place. Plus, each base has a hole for a retaining screw and a tab to hold it into position.
Fits 7mm, 8mm, 8.5mm
Sold as a set of 8.
Install instructions found HERE