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.