MSD Engine RPM Limiter Pill Module 87431; RPM Modules 3,100 to 3,900 RPM

87431 MSD RPM Modules - 3000 Series Kit - Odd Increments

MSD 87431 3000 Series Kit of RPM Modules - Odd Increments

87431 MSD Ignition RPM Module Kit

NEW MSD RPM MODULES, 3000 SERIES KIT,SET OF 5,ODD,3100/3300/3500/3700/3900

MSD 8746 (5-Pack) RPM Module Chip 6000-6800RPM 200RPM Increments Even

MSD 8743 (5-Pack) RPM Module Chip 3000-3800RPM 200RPM Increments Even