Magnetic Pickups

MP3298, MP 7905 & MP7906

A magnetic pickup is an AC generator. It is normally installed into the flywheel housing of an internal combustion engine, so that the starter ring gear acts upon it to generate a voltage pulse each time a gear tooth passes the end of the sensor.

Available mag pickup models:

  • MP3298
  • MP7905
  • MP7906

FW Murphy Production Controls offers support for all our products. If you are unable to find the product that you need, please call us at 918-957-1000.

  • Overview
  • Specifications
  • Diagrams
  • Literature


Pickup Model Part Number Total Length
MP3298 20700162 3 in. (76 mm)
MP7906 20700161 3 in. (76 mm)
MP7905 20700160 4-1/2 in. (114 mm)
  • Housing Material:
    • MP3298: Type 300 stainless steel
      • Locknut: Type 300 stainless steel
    • MP7905 and MP7906: Type 6061 aluminum/anodized Class 1
      • Locknut: Steel nickel plated
  • Output Leads (all models): Two insulated leads, 20AWG, STR/TEF insulated per MIL-W-16878D Type E, 1 white and 1 black
  • Output Voltage (all models): 200 V.P.P. TYP. (tested at 1000 I.P.S. 20 pitch gear, 0.005 gap., and 100K ohmM load)
  • Coil Resistance:
    • MP3298: 975 ohms TYP
    • MP7905 and MP7906: 2500 ohms TYP
  • Potting (all models): Internal portion of pickup is filled with epoxy resin, making the magnetic pickup oil and moist resistant
  • Temperature (all models): -65° to +225° F (-54 ° to 107° C)
  • Coil Induct.:
    • MP3298: 800 mH max, @ 1K Hz
    • MP3298: 400 mH TYP. @ 1K Hz

Dimensions Magnetic Pickup

Polarity: White lead is positive with respect to Black lead upon approach of ferrous metal.

Magnetic Pickup Dimensions


Typical Installation Diagram

Typical Installation Diagram

For more information about this product, you can download the related literature here:

Installation Instructions (00-02-0181; revised 12/2019)