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.

WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information about California Propsition 65, go to www.P65Warnings.ca.gov or visit our California Proposition 65 page.
| Part Number | Model | Total Length | Thread Size |
|---|---|---|---|
| 20700162 | MP3298 | 3 in. (76 mm) | 5/8-18 UNF |
| 20700161 | MP7906 | 3 in. (76 mm) | 3/4-16 UNF |
| 20700160 | MP7905 | 4-1/2 in. (114 mm) | 3/4-16 UNF |
| Contact Totalmas Sales | 68MP0060 | 1.89 in. (48 mm) | M16 x 1.5 |
| Contact Totalmas Sales | 68MP1815 | 1.89 in. (48 mm) | M18 x 1.5 |
| Contact Totalmas Sales | 68MP0058 | 1.89 in. (48 mm) | 5/8-18 UNF |
| Contact Totalmas Sales | 68MP0258 | 3 in. (76 mm) | 5/8-18 UNF |
| Contact Totalmas Sales | MP3 | 3 in. (76 mm) | 5/8-18 UNF |
| Contact Totalmas Sales | 68MP0158 | 5 in. (126.5 mm) | 5/8-18 UNF |
| Contact Totalmas Sales | MP5 | 5 in. (126.5 mm) | 5/8-18 UNF |