MSD Three Step Module Selector 8737 1997-gmc-k2500-suburban-esi6025141 State-of-the art measuring method ensures

State-of-the art measuring method ensures 3D MAXpider mats are custom fit to your vehicle

It is made from a 50/50 blend of soft spun cotton and poly fleece

Does the kit include mounting hardware

Dyno-Proven Gains up to +22 HP and +25 Lbs

for MSD 7 Series Ignition Modules

MSD Three Step Module Selector 8737 1997-gmc-k2500-suburban-esi6025141 State-of-the art measuring method ensuresThe Module Selectors can also be used with an MSD Timing Control. By plugging the Selector into a retard module socket, you can activate different retard amounts at select times. This is a great feature for engines being upgraded to a multi stage nitrous system. With the addition of an RPM Activated Switch, you can use the Two Step to activate a shift light at different rpm. The Module Selectors must be used with an MSD Soft Touch Rev Control or a