Powerhead / Exhaust Gasket for Yamaha & Mariner 2 HP Outboards

Premium-quality aftermarket powerhead / exhaust pipe gasket for selected Yamaha and Yamaha-manufactured Mariner 2 HP 2-stroke outboard engines.

Suitable for selected 2B / 6A1 applications using Yamaha gasket 6A1-14613-A0.

This gasket is fitted within the powerhead / exhaust assembly and is also commonly described as a:

Powerhead exhaust gasket
Exhaust pipe gasket
Powerhead base / exhaust gasket
Upper exhaust gasket

Yamaha parts information identifies 6A1-14613-A0 as the exhaust pipe gasket for the Yamaha 2B family.

Fits Yamaha Outboards

2 HP – 2 Stroke

2B
6A1 family
Selected Yamaha 2 HP 2-stroke models

Application references show 6A1-14613-A0 used across Yamaha 2B applications, including engines from the mid-1980s onwards.

Fits Yamaha-Made Mariner Outboards

2 HP – 2 Stroke

Suitable for selected Yamaha-manufactured Japanese Mariner 2 HP engines using the corresponding Yamaha 6A1 powerhead/exhaust arrangement.

Important

MARINER – YAMAHA-MADE JAPANESE MODELS ONLY

Please do not order for a Mercury-manufactured Mariner 2 HP engine simply because the horsepower is the same.

Replaces Yamaha Part Numbers

6A1-14613-A0
6A1-14613-A0-00
6A114613A0
6A114613A000
6A1-14613-00
6A1-14613-00-00
6A1-14613-01
6A1-14613-01-00

The earlier 6A1-14613-00-00 has been superseded by 6A1-14613-A0-00.

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

Product Features

Powerhead exhaust gasket
Exhaust pipe gasket
For selected Yamaha / Mariner outboards
2 HP
2B
2 Stroke
6A1 application
Selected Yamaha-made Japanese Mariner engines
Marine-grade quality aftermarket part
Manufactured to OEM specifications
Replacement for the corresponding OEM application
New replacement part
UK stock

Important – 646 & 6A1 Gaskets

There are different exhaust gaskets used on these Yamaha 2 HP engines.

Yamaha parts information shows both:

6A1-14613-A0 – Exhaust / Powerhead Gasket

and

646-14623-A1 – Separate Exhaust Gasket

within the Yamaha 2B family.

These should not be confused with each other.

For this reason, I would identify this listing primarily as a 6A1-14613-A0 gasket, rather than putting just “646 / 6A1” prominently in the title.

Important – Please Check Compatibility

Please do not order by horsepower or appearance alone.

Before purchasing, please check:

Engine is Yamaha or Yamaha-made Mariner
Engine is 2 HP
Engine is 2 Stroke
Exact engine model/code
Engine serial number
Existing gasket
Original part number

For the safest identification, check that your engine requires:

6A1-14613-A0

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

If you are unsure, please send us your engine model and serial number before purchasing and our technical team will be happy to check compatibility.

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
Workshop open Monday–Friday, 9 AM–5 PM

EXHAUST POWERHEAD GASKET FOR YAMAHA OUTBOARD 2 HP 2 STROKE 2B 6A1 646 BASE