MSD 8737 Three Step Module Selector

Genuine MSD part.

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 volts 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. When you're on the starting line, you can activate the second limit through the clutch or trans switch. This provides a steady and consis­tent rpm for firm holeshots every time. When no

MSD rev limiter and RPM control module, part number 8737, supplied new.

Key Features

• Launch rev limiter
• Burnout rev limiter
• Set 3 RPM limits:
• Top End rev Limiter

Fitment

• Universal application — check the specification below

This is a universal component sold by specification rather than by vehicle, so there is no year/make/model list for this product. Match the part number and the specification below against your own engine before ordering.

Specifications

• Brand: MSD
• Manufacturer Part Number: 8737
• Item Type: Electrical
• Product Type: Module Selector
• Sub Category: Fuel Injection System and Related Components
• Country of Manufacture: United States
• Condition: New
• Shipping Weight: 0.4 lb

Images are for illustrative purposes. The product you receive may differ in finish or packaging from the photograph.