Best replacement Mercury 4-cylinder starter motor – part number 50-879345T77 (S1230), designed for EFI 4-stroke outboard engines.

This high-quality Mercury starter motor is built to deliver reliable starting performance for 4-cylinder EFI outboards. It features a 14-tooth starter drive with counter-clockwise (CCW) rotation and is manufactured to OEM standards for durability and long service life.

Fits:

• Mercury EFI 4-stroke outboards (2009 and up)
• 75 HP, 80 HP, 90 HP, 100 HP, 115 HP
• Serial range: 1B759588 and up

Specifications:

• Tooth count: 14
• Rotation: Counter-clockwise (CCW)
• Type: OEM replacement starter motor

Replaces the following part numbers:

• Mercury 50-879345T77
• Mercury 50-879150A85
• Mercury 897525T03
• Mercury 897525T05
• Mercury 8M0038387

Note: Always check your engine model and serial number to confirm compatibility before purchase.