MSD Adjustable Rotor Assembly 10209CP GM screw on plastic lug

GM screw on plastic lug nut caps

Optimized street/strip calibration that works out-of-the-box

Chevy Corvette 1963-82

1989-1991 Isuzu Trooper

When the LED is off

MSD Adjustable Rotor Assembly 10209CP GM screw on plastic lugAdjustable rotor allows you to adjust the rotor tip to cap terminal alignment so you can adjust the rotor phasing. All of the MSD Distributors are phased at the factory, but if you are running a Multi Step Retard or Timing Controller, having the ability to adjust the rotor is a must. Rotor is adjustable. Ideal for Atomic TBI users when controlling the timing. Features: Rotor phasing can be adjusted. Ideal when Atomic TBI is controlling the timing.