122994 50MPH 80KPH OMC Speedometer | Genuine Used Part

🔧 Product Description

Genuine OMC 50 MPH / 80 KPH Mechanical Pitot Speedometer - Instrument Reference: 122994

A genuine used OMC marine speedometer with dual imperial and metric scales calibrated to 50 miles per hour and 80 kilometres per hour.

The analogue instrument is operated by water pressure supplied from a pitot pickup on the transom or gearcase. Its dual-scale face allows speed to be read in either MPH or KPH and is suited to compatible vintage Johnson, Evinrude and OMC dashboard installations.

The number 122994 is also found on OMC speedometers with other dial ranges. It is therefore best treated as a shared instrument-body, mechanism or stamped manufacturing reference rather than a unique complete service number for this dual-scale version.

⚙️ Key Features

• Genuine OMC marine speedometer
• Dual 0-50 MPH and 0-80 KPH scales
• Mechanical pitot-pressure operation
• Orange pointer with contrasting dial graduations
• Suitable for compatible vintage OMC instrument panels

🚤 Compatibility

Commonly used on

• Vintage OMC instrument panels
• Johnson and Evinrude-powered boats with OMC dashboard instruments
• Boats equipped with mechanical pitot-tube speed systems
• Transom-mounted or compatible gearcase-mounted water-pressure pickups

Typically suits

• Instrument Type: Mechanical marine speedometer
• Dial Range: 0-50 MPH / 0-80 KPH
• Signal Type: Pitot water pressure through flexible tubing
• Engine Compatibility: Not engine-specific
• Electrical Requirement: Illumination only, where fitted
• Installation Requirement: Confirm dash cutout, bezel, mounting depth and pressure-tube connection

🔌 Function

The speedometer converts pressure created at the pitot pickup into a boat-speed reading. The dual-scale dial displays the result in both miles per hour and kilometres per hour.

⚠️ Common Signs of Failure

• Gauge remains at zero while underway
• Reading is lower than the boat's actual speed
• Pointer jumps, sticks or responds slowly
• Pitot pickup is blocked by debris
• Pressure hose is kinked, split or disconnected
• Water leaks behind the dashboard
• Internal movement or illumination has failed

🔄 Supersession & Cross Reference

OEM Supersession Chain

• No confirmed OMC supersession chain has been verified for the 50 MPH / 80 KPH dial version
• 122994 is a shared stamped instrument reference rather than a confirmed unique service number

OEM / Related Numbers

• 122994
• OMC instrument-body reference 122994
• Related 122994 dial versions include:
• 0-50 MPH / 0-80 KPH dual-scale speedometer
• 0-75 KM/H metric speedometer
• 0-105 KM/H metric speedometer
• 0-70 MPH imperial speedometer

Aftermarket / Verified Equivalents

• No direct cosmetic or guaranteed drop-in aftermarket equivalent verified
• Faria Beede: 33704 / SE9509 - 60 MPH mechanical pitot speedometer, functional replacement option
• Sierra: 781-579-060P - 60 MPH GPS speedometer, functional electronic conversion option
• Replacement fitment requires confirmation of dash cutout, bezel diameter, mounting depth, pressure-tube fitting and desired scale

📦 Condition

• Genuine used part
• Removed from running engine or vessel where applicable
• In good working condition unless otherwise stated