Mercury Mariner Outboard HP 70 HP 75 HP 80 HP 90 2 Stroke 3 Cylinder 3 Carb Full Service Maintenance Kit
PRODUCT DETAILS
Mercury Mariner Outboard HP 70 HP 75 HP 80 HP 90 2 Stroke 3 Cylinder 3 Carb Full Service Maintenance Kit
Carry out a complete service on your Mercury or Mariner outboard with this comprehensive Full Service Maintenance Kit. Designed for 2-stroke 3-cylinder 3-carburettor models, this kit contains the essential service parts and lubricants required to keep your engine performing reliably while maintaining efficient cooling and corrosion protection.
Fits Mercury & Mariner Outboards
2-Stroke – 3 Cylinder – 3 Carburettor Models
- HP 70
- HP 75
- HP 80
- HP 90
Please check your engine serial number before ordering, as some models may use different service parts.
Kit Includes
- Water Pump Impeller Repair Kit
- Thermostat Kit
- Complete Anode Kit
- Fuel Filter
- 3 × Champion L78V Spark Plugs (Replacement for Champion BUHW-2)
- IMPORTANT: This listing is for engines fitted with Champion L78V (flat-seat) spark plugs. Please check your existing spark plugs before ordering, as these models were supplied with two different spark plug types. If your engine uses NGK BP8H-N-10 spark plugs, please see our separate service kit listing.
- 2 × Gearcase Drain Plug Gaskets
- 1 Litre SAE 80W-90 Marine Gear Oil
- Gear Oil Filling Pump
- 500g Marine Grease
Features
- Complete full service maintenance kit
- Premium marine-grade aftermarket parts
- Water pump impeller repair kit included
- Complete thermostat kit included
- Complete anode kit for corrosion protection
- Champion L78V spark plugs included
- Fuel filter included
- Gear oil and filling pump included
- Manufactured to OEM specifications
- 500g marine grease included
- Suitable for routine servicing and preventative maintenance
- Fully compatible replacement components
Why Service Your Outboard?
Regular servicing helps to:
- Maintain maximum engine performance
- Protect the cooling system
- Improve fuel efficiency
- Reduce engine wear
- Prevent corrosion
- Extend the life of your outboard
Replacing the impeller, thermostat, anodes, fuel filter and spark plugs at the recommended service intervals helps ensure reliable performance and reduces the risk of expensive repairs.
Why Buy From SSI Marine?
- Workshop-tested aftermarket & OEM-spec parts
- Fast UK dispatch (same-day before 1 PM Mon–Fri)
- Royal Mail Tracked 24 delivery
- UK stock – collection available from Leigh, Manchester
- Technical support available
Buyer Responsibility
Please confirm compatibility with your engine model and serial number before purchase.
If you are unsure, contact us with your engine serial number and we'll be happy to identify the correct service kit.
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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