Oil Seal for Tohatsu Nissan Outboard 40HP 50HP 3C8-00121-0 32x42x6mm Crankshaft
3C8-00121-0
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Oil Seal 3C8-00121-0
Premium Crankshaft Upper Seal for Tohatsu & Nissan
This premium aftermarket oil seal is designed specifically for the crankshaft upper assembly of Tohatsu and Nissan outboard engines. Precision engineered to 32 x 42 x 6 mm, it provides a critical barrier to prevent oil leakage and maintain engine compression, ensuring your marine engine operates at peak performance.
Key Features
- ✔ Direct OEM replacement fit
- ✔ Marine-grade Nitrile Rubber (NBR)
- ✔ Excellent heat and chemical resistance
- ✔ Stainless steel garter spring
Technical Specs
| Inner Diameter: | 32 mm |
| Outer Diameter: | 42 mm |
| Width/Thickness: | 6 mm |
| Position: | Crankshaft Upper |
| Material: | NBR / Stainless Spring |
Compatibility / Fitment Guide
| Model | Power | Engine type |
|---|---|---|
| Tohatsu M40 | 40 HP | 2-stroke |
| Tohatsu MX40 | 40 HP | 2-stroke |
| Tohatsu MWX50 | 50 HP | 2-stroke |
How to check before ordering: the part number on your old part should be 3C8-00121-0 (or a superseding number). If you are not sure, send us your engine model and serial number (on the plate on the engine bracket) and we will confirm fitment before you order. Tohatsu often uses the same part on related models, so this list may not be complete.
OEM Cross Reference
| Tohatsu Part Number: | 3C8-00121-0 |
| Superseded Part Number: | 3C8001210M |
| Nissan Part Number: | 3C8-00121-0 |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.
How do I know if it is compatible?
It fits the Tohatsu M40 and MX40 (40 HP 2-stroke) and the Tohatsu MWX50 (50 HP 2-stroke). Before ordering, check the part number 3C8-00121-0 (or 3C8001210M) or send us your engine model and serial number and we will confirm fitment.
Where exactly is this seal installed?
This seal is located at the Upper Crankshaft position on the engine block for the specified 2-stroke 40HP and 50HP models.
Note: Please verify your original part number against the references above before purchasing. Distributed by 4Boats.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
