122994 75KM/HR OMC Speedometer | Genuine Used Part

🔧 Product Description

Genuine OMC 75 KM/H Mechanical Pitot Speedometer - Instrument Reference: 122994

A genuine used OMC marine speedometer with a metric-only dial calibrated from 0 to 75 kilometres per hour.

The gauge uses pitot water pressure rather than an electrical speed signal. It is intended for compatible vintage Johnson, Evinrude and OMC instrument panels connected to a transom-mounted or gearcase-mounted speed pickup.

The number 122994 also appears on OMC speedometers with different dial calibrations. It should therefore be considered a shared instrument-body, mechanism or stamped manufacturing reference rather than a unique complete service number for this 75 KM/H version.

⚙️ Key Features

• Genuine OMC marine speedometer
• Metric-only 0-75 KM/H dial
• Mechanical pitot-pressure operation
• Dark instrument face with orange pointer
• Suitable for compatible vintage OMC dashboard systems

🚤 Compatibility

Commonly used on

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

Typically suits

• Instrument Type: Mechanical marine speedometer
• Dial Range: 0-75 KM/H
• 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

Water pressure generated by the pitot pickup increases with boat speed. The speedometer's internal pressure movement converts this pressure into a metric speed reading.

⚠️ Common Signs of Failure

• Speedometer remains at zero
• Reading is inaccurate or slow to respond
• Pointer sticks or fluctuates
• Pitot opening is blocked
• Pressure hose is leaking, kinked or disconnected
• Internal movement is seized or corroded
• Lens or illumination is damaged

🔄 Supersession & Cross Reference

OEM Supersession Chain

• No confirmed OMC supersession chain has been verified for the 75 KM/H 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:
• 0-75 KM/H metric speedometer
• 0-105 KM/H metric speedometer
• 0-50 MPH / 0-80 KPH dual-scale 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
• Faria Beede GPS speedometer - functional electronic conversion available in suitable metric and imperial ranges
• Replacement fitment requires confirmation of dash cutout, bezel diameter, mounting depth, pressure-tube fitting and desired calibration

📦 Condition

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