50-879150A85 Aftermarket Mercruiser 14-Tooth CCW Starter Motor | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Mercury / Mariner 75-115HP EFI FourStroke Starter Motor - Part Number: 50-879150A85

New aftermarket 12-volt, 14-tooth counter-clockwise four-bolt starter for Yamaha-derived Mercury and Mariner 75HP through 115HP EFI FourStroke outboards. The supplied MerCruiser wording is corrected: this starter is for the 1.7-litre outboard platform rather than an inboard sterndrive engine.

⚙️ Key Features

• 12-volt marine electrical system

• Counter-clockwise rotation viewed from the drive end

• 14-tooth starter pinion

• Four-bolt mounting arrangement

• Permanent-magnet gear-reduction starter

• Integrated starter solenoid and overrunning clutch

🧰 Assembly Contents

• 1 × Complete starter motor assembly - Part Number: 50-879150A85

• 1 × Integrated starter solenoid

• 1 × Installed 14-tooth pinion and overrunning clutch

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

• Mounting bolts and external battery cables are supplied separately unless stated

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 8M0038387 / 8M0031125 / 8M0007921 → Later Mercury service references associated with 50-879150A85

• 50-898103T95 / 50-898103T94 and 50-897525T05 → Related service revisions

• 50-879150A85 → Earlier complete starter reference

OEM / Related Numbers:

• 50-879150A85

• 879150A85

• 50-897525T03

• 50-897525T05

• 50-898103T94

• 50-898103T95

• 8M0007921

• 8M0031125

• 8M0038387

• Delco 8000332

Aftermarket / Verified Equivalents:

• Recmar: REC50-879150A85

• Delco Remy: 8000332

• Aftermarket 14-tooth four-bolt starter matching the listed Mercury service family

🚤 Compatibility

Commonly used on:

• Yamaha-derived Mercury and Mariner 1.7-litre EFI FourStroke outboard starting systems

Typically suits:

• Mercury/Mariner 75HP EFI FourStroke

• Mercury/Mariner 80HP EFI FourStroke

• Mercury/Mariner 90HP EFI FourStroke

• Mercury/Mariner 100HP EFI FourStroke

• Mercury/Mariner 115HP EFI FourStroke

• HP Range: 75-115 HP

• Engine Type: 1.7-litre inline-four EFI four-stroke outboard

• Year Range: Principally early 2000s-mid-2010s, controlled by regional serial range

• Serial / Model Identification: Multiple serial blocks use this starter family. Confirm 12V, 14 teeth, counter-clockwise rotation, four-bolt mounting and one of the listed 879150/897525/898103/8M references.

🔌 Function

The gear-reduction starter cranks the 1.7-litre four-stroke powerhead through the 14-tooth pinion. Correct mounting and tooth count are critical because other Mercury starters with similar housings use different drives.

Common signs of failure:

• No crank or intermittent cranking

• Slow rotation or excessive voltage drop

• Pinion spins without flywheel engagement

• Grinding from an incorrect tooth count or worn flywheel

• Heat-soak failure from worn brushes or solenoid 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