AutoZone MSD/3-Step module selector

Search suggestions

    My Vehicles

    Add a Vehicle

    Find a Store

    Select Store

    Save 20% Sitewide

    Use Code: YOUCHOOSE20

    See Details

    Get A $25 Gift Card

    Use Code: YOUCHOOSE25

    See Details

    MSD/3-Step module selector

    Part Number: 8737

    Features & Benefits

    The MSD module selectors allow you to choose two or three different RPM limits that can be activated at different times. With this ability, the possibilities are endless. As an example, we’ll use a drag car with a three step module selector plugged into the RPM socket of a 7AL-2 ignition. The different RPM modules are activated when 12 V are applied to a corresponding wire. By connecting one wire to the line-lock circuit, one module will be activated during the burnout. This helps keep tire temperatures consistent. When the line-lock button is released, the limit turns off.

    • Allows user to switch between 3 RPM/timing modules
    • Set different RPM limit for burnout/launch/over rev
    • Can be used w/timing controls for retard changes
    • Must be used with MSD soft touch rev limiter
    • No RPM or Retard Modules are supplied
    Product Details
    Part Number: 8737
    Weight: 0.394 lbs
    Type: RPM Module Selector
    Burnout RPM Limiter: Yes
    Color / Finish: Black and Silver
    High End RPM Limiter: Yes
    Housing Material: High Quality Plastic
    Module Increments (rpm): 100
    Module Range Maximum (rpm): 11600
    Module Range Minimum (rpm): 3000
    Mounting Method: Screw down
    Package Contents: Module selector, 4-Mounting Screws, Parts Bag, Wiring Terminals Note: RPM pills sold separately
    Starting Line RPM Limiter: Yes
    Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses.
    This product may be shipped directly by the vendor to any eligible US addresses, excluding APO/FPO/DPO or US Territory addresses.
    • Overall

      MSD/3-Step module selector


      Please wait while we perform your request.

      There are currently no reviews for this product. To be the first to review this product, Login or Register


      Please wait while we perform your request.
      Select reviews which match your interests.

      OTHER CUSTOMERS ALSO VIEWED

      Buy With Confidence

      ABOUT CORE PARTS

      Buy online and return core parts to the store to be refunded the price.
      Core Parts Policy

      Core return policy

      FREE SHIPPING

      On orders $75 or greater
      and free shipping to APO, FPO, and DPO addresses.
      Get More Details

      Free shipping policy

      RETURN ANYWHERE

      Buy online,
      return anywhere
      Get More Details

      Return anywhere

      SAME-DAY STORE PICKUP

      Save time by buying online and picking up items in store.
      Learn More

      Same day store pickup
      AutoZone Logo