Power Head / Base Gasket for Mariner 9.9 HP & 15 HP Outboards

Premium-quality aftermarket power head base gasket for selected Mariner 9.9 HP and 15 HP 2-stroke outboards.

⚠️ YAMAHA-MANUFACTURED MARINER ENGINES ONLY

This gasket is specifically for the Japanese Mariner outboards manufactured by Yamaha.

IT WILL NOT FIT MARINER ENGINES MANUFACTURED BY MERCURY.

Please check your engine model and identification before ordering.

Fits Mariner Outboards

9.9 HP – 2 Stroke

9.9C
Selected 1979–1986 models
Japanese / Yamaha-manufactured Mariner only

15 HP – 2 Stroke

15C
15K
W15
Selected 1979–1986 models
Japanese / Yamaha-manufactured Mariner only

Replaces Mariner Part Numbers

27-96602M
96602M
27-96602
96602
83901M

OEM part numbers are used for identification and reference purposes only.

Product Features

Power head / base gasket
For selected Mariner outboards
9.9 HP & 15 HP
2-stroke applications
Fits selected 9.9C / 15C / 15K / W15
Selected 1979–1986 applications
Japanese Yamaha-manufactured Mariner engines only
Marine-grade aftermarket replacement
Manufactured to OEM specifications
Designed for accurate fitment and reliable sealing
New replacement part

⚠️ IMPORTANT – YAMAHA-MADE MARINER ONLY

Mariner sold outboards manufactured by different manufacturers.

This gasket is specifically for the:

MARINER 9.9 HP / 15 HP – JAPANESE MODELS MANUFACTURED BY YAMAHA

WILL NOT FIT

Mariner engines manufactured by Mercury.

Do not order this gasket simply because your engine is a Mariner 9.9 HP or 15 HP.

The manufacturer, model and engine identification must be checked.

Important – Please Check Compatibility

Before purchasing, please check:

Engine is a Japanese Yamaha-manufactured Mariner
Engine horsepower
Engine model
Model year
Original gasket
Original Mariner part number

For the safest identification, your existing gasket should correspond with 27-96602M / 96602M.

If the gasket looks the same as yours, this does not always mean it is the correct gasket for your outboard.

If you are unsure whether your Mariner was manufactured by Yamaha or Mercury, please send us a photograph of your engine identification / serial-number plate before ordering.

Why Buy From SSI Marine?

Marine-grade aftermarket & OEM-spec parts
Workshop-tested products
More than 10 years supplying outboard parts
UK stock
Same working day dispatch before 1 PM Monday–Friday
Royal Mail Tracked 24
Technical support from experienced outboard specialists
Collection available from Leigh, Greater Manchester

Mariner Outboard 9.9 HP 15 HP 2 Stroke Yamaha Made Power Head Base Gasket 27-96602M