PRODUCT DETAILS
SERVICE / MAINTENANCE KIT
FOR MERCURY / MARINER OUTBOARD
4-Stroke – 4HP, 5HP, 6HP Models
Everything you need for routine maintenance of your Mercury or Mariner 4-stroke outboard engine.
Kit Contents:
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1 x NGK Spark Plug
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1 x Impeller Kit
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1 x Fuel Filter
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2 x Gearbox Drain/Fill Screw Fibre Washers
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1 x Trim Tab Anode
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1 x Thermostat & Gasket
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1 x Propeller Split Pin
Fits:
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Mercury 4HP 4-Stroke
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Mercury 5HP 4-Stroke
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Mercury 6HP 4-Stroke
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Mariner 4HP 4-Stroke
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Mariner 5HP 4-Stroke
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Mariner 6HP 4-Stroke
About SSI Marine Kits:
SSI MARINE KITS are assembled by our team using knowledge from hands-on workshop experience and feedback from customers over the years. We focus on delivering well-balanced, high-quality kits using a mix of:
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Genuine OEM Parts
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Premium Aftermarket Parts
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Quality Marine Oils (Rock Oil, Motul, Quicksilver, Suzuki, Yamaha)
Each kit is tailored to specific models. The photo represents the actual contents of this kit – please check carefully and ask us if you have any questions.
Why Choose SSI Marine?
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Workshop-tested aftermarket & OEM parts
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Fast dispatch from our UK warehouse
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Tracked 24-hour UK delivery
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Expert technical support available
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UK stock – same-day dispatch before 1 PM (Mon–Fri)
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Collection available from our Leigh (Manchester) unit
Buy with Confidence:
It is the buyer's responsibility to confirm compatibility with your outboard engine model and serial number before purchasing. If in doubt, contact our team — we're 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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