0174630 0174985 OMC BRP Tachometer | Genuine Used Part

🔧 Product Description

Genuine OMC / BRP Tech Series 7000 RPM Tachometer - Part Number: 0174985

A genuine Johnson and Evinrude Tech Series tachometer with selectable 5-, 6- and 10-pulse-per-revolution settings.

Current part number 0174985 replaces earlier 0174630. The original 0174630 gauge used 5- and 6-pulse settings, while the later 0174985 service replacement added the 10-pulse position for broader outboard compatibility.

⚙️ Key Features

• Genuine OMC / BRP Tech Series tachometer

• Correct current part number 0174985

• Supersedes part number 0174630

• 0-7000 RPM scale

• Selectable 5-, 6- and 10-pulse settings

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 0174985 → Supersedes 0174630

• 0174630 earlier black-bezel 7000 RPM, 5- and 6-pulse tachometer

• 0174985 later 5-, 6- and 10-pulse Tech Series tachometer

OEM / Related Numbers:

• 0174985

• 174985

• 0174630

• 174630

• 0174983 related international-market 5/6/10-pulse tachometer

• 174983

• Related instrument bulb, socket and mounting bracket

Aftermarket / Verified Equivalents:

• Faria Beede 7000 RPM Johnson / Evinrude-compatible tachometer

• Sierra / Teleflex 7000 RPM selectable-pulse outboard tachometer

• No aftermarket gauge is a guaranteed cosmetic match to the OMC Tech Series face

🚤 Compatibility

Commonly used on:

• Johnson and Evinrude non-SystemCheck analogue instrument panels

• Outboards producing 5-, 6- or 10-pulse tachometer signals

Typically suits:

• Johnson / Evinrude two-cylinder outboards using a supported pulse setting

• Johnson / Evinrude three-cylinder outboards

• Johnson / Evinrude V4 outboards

• Johnson / Evinrude V6 outboards

• OMC rigging and accessory systems from the late 1980s through later service production

• 1997, 2000, 2005-2007 and later rigging catalogues listing 0174985

• Gauge Range: 0-7000 RPM

• Electrical System: 12-volt analogue pulse-input system

• Year Range: Approximately 1988 onward

🔌 Function

The tachometer measures the frequency of the engine's charging-system pulses and displays calculated crankshaft speed.

Common signs of failure:

• No RPM reading

• Incorrect selector position causes inaccurate RPM

• Needle jumps with charging-system faults

• Gauge reading drops when electrical loads are switched on

• Lens fogs or illumination fails

• Terminals or selector contacts corrode

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated