Mercury Mariner 50HP 60HP 4-Cyl EFI 4-Stroke 300-Hour Service Kit incl Oil's (Standard Gearbox Only)
PRODUCT DETAILS
Mercury/Mariner 50HP & 60HP EFI 4-Stroke 300-Hour Service Kit (Standard Gearbox)
Includes Oils, Grease & Pump – Complete Maintenance Kit
🛠 Product Description
Keep your outboard performing at its best with this complete 300-hour maintenance kit for Mercury and Mariner 50HP & 60HP EFI 4-stroke outboards (Standard Gearbox only). Perfect for serious boaters, this all-in-one package includes high-quality service parts, premium lubricants, and essential tools.
⚠️ Fits Standard Gearbox only. Not compatible with High Thrust or Command Thrust models.
✅ What’s Included?
Service Parts:
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4x Spark Plugs – Smooth ignition
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1x Impeller & Gasket – Proper water pump function
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1x Thermostat & Gasket – Regulates engine temperature
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1x Fuel Filter
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1x Secondary Fuel Filter
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1x Oil Filter
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2x Gearbox Oil Drain Seals
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1x Complete Anode Set – Corrosion protection
Fluids & Maintenance Supplies:
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3L Quicksilver 10W-30 4-Stroke Engine Oil
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1L Quicksilver Premium Gear Lube
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1x Gear Oil Filling Pump
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0.5L Rock Oil Marine Grease
🔧 Why Buy From SSI MARINE?
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Designed by outboard servicing professionals
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Uses a mix of genuine and premium aftermarket parts
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Includes all fluids, tools, and anodes—no guesswork
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Meets or exceeds OEM quality standards
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Fast UK dispatch – Orders before 1 PM ship same working day
⚠ Compatibility Notice
Please confirm your outboard's specifications before ordering. If you're unsure, contact us with your serial number—we're happy to help.
🚚 Shipping
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Fast, secure UK shipping
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Tracked 24-hour delivery service
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Orders before 1 PM dispatched same working day
🛒 Add to cart and get everything you need for your Mercury or Mariner 50/60HP EFI’s 300-hour service—fluids, filters, tools, and corrosion protection included!
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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