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.

Whats 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!