Genuine Tohatsu Fuel-Tank Seal 3AB-70036-1 – MFS2.5C & MFS3.5C Four-Stroke Portables
3AB-70036-1
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- 30 Day Return Policy
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- Backordered, shipping soon
Stop fuel smells and vapour loss in seconds
The Tohatsu 3AB-70036-1 fuel-tank seal is the factory-moulded rubber gasket that sits between the integral plastic tank and the upper cowling on lightweight MFS2.5C and MFS3.5C four-stroke outboards. Replacing a hardened or flattened seal restores an airtight, leak-free joint, preventing petrol seepage and maintaining correct tank pressure for easy starting.
Key features
- Exact OEM fit – precision moulded to Tohatsu dimensions for a drop-in replacement.
- Ethanol-resistant compound – formulated to cope with modern E10 petrol without swelling or cracking.
- UV-stable – resists embrittlement from sunlight and engine-bay heat.
- Shock-absorbing – cushions the tank against vibration, protecting weld seams from fatigue.
- Quick DIY swap – installs in minutes; no sealant required.
Compatibility
Designed for Tohatsu-built four-stroke outboards with an integral top-mounted fuel tank, including:
- MFS2.5C (all shaft lengths, 2018 →)
- MFS3.5C (all shaft lengths, 2018 →)
- Mercury / Mariner 2.5 hp & 3.5 hp four-stroke models manufactured by Tohatsu
Replaces earlier seals ending …70036-0 and fits the latest supersession 3AB-70036-1M with no modifications.
What’s in the box?
- 1 × Rubber fuel-tank seal (3AB-70036-1)
Installation tips
Remove the recoil starter cover, lift out the old seal, clean the mating faces and press the new gasket squarely into place. Lightly grease the lip with silicone grease for an easier fit and longer service life.
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