Part number MP39200.
Sierra Ignition Switch | Off-Run-Start Switch w/3 Screw Tab Terminals
Polyester housing is rust and corrosion proof. 3 position Off-Run-Start switch, supplied with brass back up nut and knurled black plastic face nut with rubber cap to seal out splash and spray. Requires 7/8" mounting hole in panel, 1-1/8" max thickness. Ignition rated 15 Amp @ 12 VDC, Solenoid 30 Amp @ 12 VDC.