High‑performance aftermarket starter motor for Mercury 9.9HP & 15HP 4‑stroke outboards (323 cm³), 1999-2008, and Mariner 9.9HP & 15HP 4‑stroke, 1998-2001; Permanent Magnet Direct Drive (PMDD) design built for reliable starting and durability in saltwater and freshwater conditions.

• Voltage: 12V; Rotation: Counter Clockwise (CCW)
• Drive teeth: 9-tooth pinion; Design: Permanent Magnet Direct Drive (PMDD)
• 100% brand new; Marine-grade quality for salt and freshwater conditions
• Fits: Mercury 9.9HP & 15HP 4-stroke (1999-2008) and Mariner 9.9HP & 15HP 4-stroke (1998-2001)
• Replaces: Mercury 50-852570, 50-852570T, 50-857065, 50-859168, 50-859168T; Sierra 18-6829; Arco 5359; API Marine MOT3022N; Arrowhead SAB0118; J & N 410-21043; WAI 5763N
• Cross-reference: Johnson Electric 10153340; Prestolite 20513570TBA; United Technologies 6873740-M030SM
• Actual product may vary slightly from images or illustrations
• Ideal for boat mechanics, marine workshops and DIY enthusiasts needing a reliable replacement

Supplied new and ready to fit - replaces Mercury part 50-859168T and Sierra 18-6829 among others; please check part numbers for correct fitment before purchase.