- L78V - £65.00
- BP8H-N-10 - £50.00
Mercury Mariner Outboard HP 70 HP 75 HP 80 HP 90 2 Stroke 3 Cylinder 3 Carb Basic Service Maintenance Kit
PRODUCT DETAILS
Mercury Mariner Outboard HP 70 HP 75 HP 80 HP 90 2 Stroke 3 Cylinder 3 Carb Basic Service Maintenance Kit
Carry out your routine service with this premium Basic Service Maintenance Kit for Mercury and Mariner 2-stroke 3-cylinder 3-carburettor outboards. This kit includes the essential service parts required for regular maintenance to help keep your outboard running reliably and efficiently.
Fits Mercury & Mariner Outboards
2-Stroke – 3 Cylinder – 3 Carburettor Models
- 70 HP
- 75 HP
- 80 HP
- 90 HP
Please check your engine serial number before ordering, as some models may use different service parts.
Kit Includes
- Water Pump Impeller
- Water Pump Gasket
- Fuel Filter
- 3 × Spark Plugs (Customer selects the correct type from the options)
- 2 × Gearcase Drain Plug Gaskets
- 1 Litre SAE 80W-90 Marine Gear Oil
Spark Plug Options
Please check which spark plugs are fitted to your engine before ordering.
These engines were supplied with two different spark plug types, and it is not possible to identify the correct type from the engine model alone.
Please select one of the following options when ordering:
- Champion L78V (Flat Seat) (Replacement for Champion BUHW-2)
- NGK BP8H-N-10
Features
- Basic annual service maintenance kit
- Premium marine-grade aftermarket service parts
- Water pump impeller and gasket included
- Fuel filter included
- Choice of Champion or NGK spark plugs
- 1 Litre marine gear oil included
- Manufactured to OEM specifications
- Suitable for routine servicing
- Fully compatible replacement components
Why Service Your Outboard?
Regular servicing helps to:
- Maintain reliable engine performance
- Protect the cooling system
- Improve fuel efficiency
- Reduce engine wear
- Extend the life of your outboard
Replacing the impeller, fuel filter, spark plugs and gear oil at the recommended service intervals helps ensure dependable operation throughout the boating season.
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.
Please also confirm which spark plugs are currently fitted to your engine before ordering. These engines were fitted with either Champion L78V (Flat Seat) or NGK BP8H-N-10 spark plugs. The correct type cannot be identified from the engine model alone, so please select the appropriate option when purchasing.
If you are unsure, contact us with your engine serial number and photographs of your existing spark plugs, and we'll be 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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