Outboard split pin / cotter pin (2 PCS) for Mercury, Mariner & Tohatsu outboard engines. Designed to securely retain the propeller nut and prevent loosening during operation.

A simple but essential outboard hardware component for maintenance and safe operation.

Replaces Part Number

18-815026
951503-0318

Fitment

Mercury / Mariner / Tohatsu Outboards

2 Stroke & 4 Stroke Models:
• 4 HP
• 5 HP
• 6 HP
• 8 HP
• 9.8 HP

IMPORTANT

Always replace split pins after removal to ensure safe and secure propeller installation.

Details

• Product: Split Pins / Cotter Pins
• Quantity: 2 PCS
• Application: Outboard propeller nut retention
• Material: Marine-grade metal
• Direct replacement – no modification required

Why Buy from SSI Marine

Workshop-tested aftermarket & OEM-spec parts
Fast UK dispatch (same-day before 1 PM Mon–Fri)
Tracked 24-hour UK delivery
UK stock – collection available from Leigh (Manchester)
Technical support available

Buyer Responsibility

Please confirm compatibility with your engine model before purchase.
If unsure, contact us — our technical team will be happy to help.

Mercury Mariner Tohatsu Outboard Split Pin 2 PCS Cotter Pin 4 5 6 8 9.8HP – Replaces 18-815026