Fuel Pump Diaphragm – Tohatsu 4 HP, 5 HP, 6 HP, 8 HP & 9.8 HP 4-Stroke Outboards

Quality marine-grade aftermarket fuel pump diaphragm for selected Tohatsu 4 HP to 9.8 HP 4-stroke outboard engines.

Designed to replace a worn or damaged fuel pump diaphragm, helping restore consistent fuel delivery, reliable starting and smooth engine operation.

Ideal for fuel pump servicing and maintenance.

Fitment – Tohatsu Outboards

HP	Engine Model Family	Engine Type
4 HP	MFS4	4-Stroke
5 HP	MFS5	4-Stroke
6 HP	MFS6	4-Stroke
8 HP	MFS8	4-Stroke
9.8 HP	MFS9.8	4-Stroke

Important: Suitable for selected Tohatsu MFS models using the corresponding fuel pump diaphragm.

Not all engines within these horsepower ranges use the same fuel pump. Compatibility depends on the engine model, production year, serial number and fuel pump assembly.

Replaces Tohatsu Part Number

3H6-04005-0

Additional Reference Formats:

3H6040050
3H6040050M

OEM references are provided for identification purposes only.

Product Details

Condition: New
Product: Fuel Pump Diaphragm
Quality: Marine-Grade Aftermarket
Application: Selected Tohatsu MFS4 / MFS5 / MFS6 / MFS8 / MFS9.8
Horsepower: 4 HP, 5 HP, 6 HP, 8 HP, 9.8 HP
Engine Type: 4-Stroke
Main Reference: 3H6-04005-0

Please note: This listing is for a fuel pump diaphragm, not a complete fuel pump assembly.

Please check the product photographs for the exact item supplied.

Important – Check Compatibility

Please confirm your Tohatsu engine model, year, serial number and original fuel pump diaphragm part number before ordering.

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

If unsure, contact SSI Marine with your engine details before purchasing.

Why Buy From SSI Marine?

Official Tohatsu Outboards Dealer
Workshop-tested genuine and aftermarket parts
Over 10,000 genuine and aftermarket items stocked
Same-day dispatch before 1 PM Monday–Friday
Royal Mail Tracked 24
UK stock – collection from Leigh, Greater Manchester
Technical support from experienced marine engineers

Buyer Responsibility: Please confirm compatibility before purchasing.

4–9.8 HP Tohatsu Outboard Fuel Pump Diaphragm 4-Stroke 3H6-04005-0