Amazon.com: Runleader Rotating Shaft Hour Meter Tachometer,RPM Magnetic Pickup,Maintenance Reminder,Display Shutdown for Lawn Mower Generator Compressor Marine Diesel/Gas Engine Motor and Process/Power Equipment. : Automotive
Single Output Tachometer Magnetic Pick-Up Sensor
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Deluxe Tachometer: P/N 82636 - Stewart Warner
Faria Chesapeake White Stainless Steel 4" Tachometer - 4,000 RPM (Diesel - Magnetic Pick-Up) - 33818 | Anchor Express
How To Install a Magnetic Pickup to Drive a Tachometer - Seaboard Marine