0174629 OMC Sterndrive Tacho | Genuine Used Part

🔧 Product Description

Genuine OMC Cobra / King Cobra Tech Series Tachometer - Part Number: 0174629

A genuine OMC three-inch analogue tachometer for selected Cobra and King Cobra sterndrive instrument panels.

The rear selector supports multiple engine pulse settings, allowing the gauge to operate with several OMC petrol-engine configurations. The gauge belongs to OMC's Tech Series instrument family.

⚙️ Key Features

• Genuine OMC Sterndrive tachometer

• Correct part number 0174629

• Tech Series face and bezel

• Multi-position 2-, 3-, 4- and 6-pulse selector

• Used on selected Cobra and King Cobra packages

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 0174629 documented OMC Tech Series tachometer reference

• No confirmed direct superseding number

OEM / Related Numbers:

• 0174629

• 174629

• Related OMC Cobra instrument harness

• Related gauge mounting bracket

• Related instrument bulb and socket

• Related ignition or alternator signal lead

Aftermarket / Verified Equivalents:

• No direct aftermarket cosmetic duplicate

• Faria Beede selectable-pulse sterndrive tachometer - functional replacement

• Sierra / Teleflex universal petrol-engine tachometer - functional replacement

• Replacement must support the required pulse setting and RPM range

🚤 Compatibility

Commonly used on:

• OMC Cobra sterndrive instrument panels

• OMC King Cobra sterndrive instrument panels

• Petrol-engine installations using a compatible analogue pulse signal

Typically suits:

• OMC 3.0L inline-four Cobra packages

• OMC 4.3L V6 Cobra packages

• OMC 5.0L and 5.8L V8 Cobra packages

• OMC 7.4L King Cobra packages where the instrument specification lists 0174629

• OMC engines requiring the gauge's selectable pulse positions

• Engine Type: OMC petrol sterndrive

• Gauge Type: Three-inch analogue tachometer

• Year Range: Approximately late 1980s - 1990s

🔌 Function

The tachometer converts the engine's ignition or alternator pulse frequency into an RPM reading.

Common signs of failure:

• Gauge remains at zero

• Reading changes when the selector switch is moved or vibrated

• RPM reading does not match actual engine speed

• Needle sticks or oscillates

• Electrical terminals corrode

• Lens fogs or internal lighting fails

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated