PRODUCT DETAILS
Complete 300-Hour Maintenance Kit – Keep Your Outboard Running Smoothly
This 300-hour service kit is specifically designed for Mercury/Mariner 50HP & 60HP EFI 4-Cylinder 4-Stroke outboards with a standard gearbox. It includes all the essential components needed for routine maintenance, ensuring optimal engine performance, reliability, and protection.
⚠ This kit is for STANDARD GEARBOX models only. It WILL NOT fit High Thrust or Command Thrust models.
What’s Included?
✔ 4x Spark Plugs – Ensures smooth ignition and efficient combustion
✔ 1x Impeller – Essential for proper cooling system function
✔ 1x Impeller Gasket – Prevents leaks in the cooling system
✔ 2x Gearbox Oil Drain Seals – Helps maintain proper lubrication
✔ 1x Fuel Filter – Protects against fuel contamination
✔ 1x Secondary Fuel Filter – Ensures clean fuel supply
✔ 1x Oil Filter – Removes contaminants for long-lasting engine health
✔ 1x Thermostat & Gasket – Regulates engine temperature for efficiency
✔ 1x Complete Anode Set – Prevents corrosion and extends engine life
🔹 No oils included – Please ensure you have the correct lubricants for your outboard.
Why Choose SSI MARINE Service Kits?
✔ Expertly Designed – Based on real outboard service experience.
✔ Complete Protection – Includes anode set & thermostat for full maintenance.
✔ Premium Quality Parts – A mix of genuine and high-quality aftermarket components.
✔ Affordable & Reliable – Designed to meet or exceed manufacturer standards.
✔ Fast UK Shipping – Dispatched same-day for orders before 1 PM (next working day if later).
⚠ Verify Compatibility Before Purchase
Outboards have different models, years, and variations. Double-check compatibility before purchasing. If unsure, contact our expert team for assistance.
⚠ Not compatible with High Thrust or Command Thrust models.
📦 Fast & Secure UK Shipping
🚀 Tracked 24-hour delivery for fast and reliable shipping.
🔧 Order your Mercury/Mariner 50HP 60HP EFI 300-Hour Service Kit today and keep your outboard in top condition! 🚤
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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