Mercury Mariner Tohatsu Outboard Split Pin 2 PCS Cotter Pin 4 5 6 8 9.8HP – Replaces 18-815026
PRODUCT DETAILS
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.
SHIPPING & DELIVERY
Delivery & Returns Policy
Delivery
Standard Delivery
- £6: Royal Mail Tracked 24 Service
- £3.99: Large Letter - Royal Mail 1st Class Post (Untracked)
We offer free delivery on all orders over £150 (excludes outboard engines).
Orders placed before 1:00 PM (Monday-Friday) are usually dispatched the same working day.
Most parcels are delivered within 24 hours, but please allow extra time for courier delays that may occur outside our control.
For outboard engines, please contact us for a delivery quote.
Important: Please ensure your shipping address is correct before completing checkout. SSI Marine is not responsible for parcels sent to an incorrect address provided by the buyer.
Tracking Your Order
Once your order has been dispatched, you will receive a tracking number via email (after 5 PM on the day of dispatch).
Tracking is available only for parcels sent via Royal Mail Tracked 24.
Large Letter orders are sent via Royal Mail 1st Class Post (untracked).
Returns
We accept returns of unused and undamaged items within 30 days of purchase.
Returned items must be in sellable condition and include the original packaging.
Please do not tape, label, or write directly on the product's original box.
Important: Do not return items in their original product boxes only, they must be placed inside a protective outer box or bag. Parcels returned like the example below will be subject to a 20% restocking fee.
Return shipping costs are the customer's responsibility.
Please include your order details and reason for return inside the parcel.
Refunds
Refunds are issued for the item purchase price only (shipping costs are non-refundable).
All refunds will be made using the same payment method as your original order.
Items returned in poor condition or without proper packaging may incur a 20% restocking fee.
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