8M0142679 Aftermarket Mercruiser Starter Motor | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Mercury 175-300HP V6/V8 FourStroke Starter Motor - Part Number: 8M0142679

New aftermarket 12-volt, 13-tooth counter-clockwise starter for current-generation Mercury 3.4L V6 and 4.6L V8 FourStroke outboards. The supplied MerCruiser wording is corrected: 8M0142679 is a Mercury outboard starter reference and is later superseded within the 8M0187292 service family.

⚙️ Key Features

• 12-volt marine electrical system

• Counter-clockwise rotation viewed from the drive end

• 13-tooth starter pinion

• Permanent-magnet gear-reduction construction

• Integrated starter solenoid

• Matched to Mercury V6/V8 FourStroke and Racing flywheel geometry

🧰 Assembly Contents

• 1 × Complete starter motor assembly - Part Number: 8M0142679

• 1 × Integrated starter solenoid

• 1 × Installed 13-tooth pinion and overrunning clutch

• 1 × Installed reduction drive, armature, field-magnet, brush holder and housing

• Mounting bolts and external battery cables are not included unless specified

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 8M0187292 → Later Mercury service replacement for 8M0142679

• 8M0142679 → Replaces/relates to earlier 8M0137789 and 8M0104011 starter revisions

OEM / Related Numbers:

• 8M0142679

• 8M0187292

• 8M0137789

• 8M0104011

• 8M0099252

• 8M0096343

• 8M0079330

• 8M0079328

• 8M0074530

• 8M0061073

Aftermarket / Verified Equivalents:

• Sierra Marine: 18-55505

• Recmar: REC8M0142679

🚤 Compatibility

Commonly used on:

• Mercury 3.4-litre V6 and 4.6-litre V8 FourStroke outboard starting systems

Typically suits:

• 175HP V6 FourStroke and 175 Pro XS - serial 2B529482 and above

• 200HP V6 FourStroke, Pro XS and SeaPro - serial 2B529482 and above

• 225HP V6 FourStroke, Pro XS and SeaPro - serial 2B529482 and above

• 250HP V8 FourStroke, Pro XS, SeaPro and Verado - serial 2B529482 and above

• 250R - serial 1E080500 and above

• 300HP V8 FourStroke, Pro XS, SeaPro and Verado - serial 2B529482 and above

• 300R - serial 1E080500 and above

• 300R AMS - serial 1E081459 and above

• HP Range: 175-300 HP

• Engine Type: 3.4L V6 or 4.6L V8 naturally aspirated/supercharged FourStroke outboard, model dependent

• Year Range: Principally 2018 onward

• Serial / Model Identification: Confirm the complete Mercury serial number, 13-tooth counter-clockwise starter and one of the listed 8M starter references.

🔌 Function

The gear-reduction starter turns the large-displacement V6/V8 flywheel during engine start. The 13-tooth drive and mounting geometry are specific to this late-generation outboard platform.

Common signs of failure:

• Starter clicks but the engine does not crank

• Slow cranking or excessive battery voltage drop

• Pinion spins, grinds or repeatedly disengages

• Intermittent start operation after heat soak

• High current draw, overheated cables or burnt contacts

• Corrosion, water entry or reduction-drive damage

📦 Condition

• Brand-new aftermarket replacement starter motor

• New and unused

• Supplied in suitable manufacturer or equivalent protective packaging