Genuine Tohatsu Crankshaft D 309-00034-0 2.5/3.5HP 2-Stroke
309-00034-0
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Tohatsu Crankshaft D
Genuine 309-00034-0 | Exact diagram match required
Genuine Tohatsu Crankshaft D for selected legacy 2.5HP and 3.5HP two-stroke powerheads. The lettered crankshaft variant is critical: 309-00034-0 must be confirmed in the engine's model- and serial-specific parts catalogue.
Key Features
- ✔ Genuine Tohatsu OEM crankshaft
- ✔ Crankshaft D specification
- ✔ Exact manufacturer number 309-00034-0
- ✔ For selected legacy 2.5/3.5HP two-strokes
- ✔ Single internal-engine component
Technical Specs
| Part type | Crankshaft D |
| Engine cycle | 2-stroke |
| Power family | 2.5HP / 3.5HP |
| Manufacturer number | 309-00034-0 |
| Supply | 1 genuine Tohatsu crankshaft |
| 4Boats SKU | 309-00034-0 |
Compatibility / Fitment Guide
Verified family: legacy Tohatsu/Nissan 2.5HP and 3.5HP two-stroke piston/crankshaft catalogues using exact reference 309-00034-0.
Positive fitment test: the original diagram or removed part must identify Crankshaft D 309-00034-0. A general M2.5/M3.5 model match is not enough because A, D and 3F0-series variants appear in this engine family.
Exclusions: not for MFS four-strokes; not for M15/M20/M25; not an automatic replacement for 309-00031-0 Crankshaft A; and not for M3.5B2 versions whose catalogue calls for a 3F0-series crankshaft.
Part Number Cross Reference
| Tohatsu original | 309-00034-0 |
| Dealer format | 309000340 / 309000340M |
| Nissan Marine | Use exact 309-00034-0 diagram reference |
| 4Boats SKU | 309-00034-0 |
The suffix is part of the fitment. Do not substitute a same-family crankshaft with another letter or prefix.
Frequently Asked Questions
Is this a genuine part?
Yes. It is listed as a genuine Tohatsu component.
Does it fit MFS15D/MFS20D/MFS25D?
No. Those previous claims were incorrect; this is a legacy 2.5/3.5HP two-stroke part.
Will it replace Crankshaft A 309-00031-0?
Not automatically. Confirm the exact D reference in the parts diagram.
What else should be inspected during replacement?
A technician should inspect bearings, seals, journals, connecting components, cylinder condition and all service clearances.
Note: Internal powerhead work should be completed by a qualified marine technician using the correct Tohatsu service manual.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
