Genuine Tohatsu Main Jet #86 309-03151-3 Nissan Mercury 2.5HP 3.3HP 3.5HP
309-03151-3
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Tohatsu Main Jet #86 (309-03151-3)
Genuine OEM Replacement Part
This is a Genuine Tohatsu Carburetor Main Jet (#86), engineered to provide precise fuel metering for optimal engine combustion. Using genuine parts ensures your outboard maintains its factory performance, fuel efficiency, and smooth throttle response. Ideal for routine maintenance or repairing fuel delivery issues caused by clogged or damaged jets.
Key Features
- ✔ Genuine Tohatsu Marine Spares
- ✔ High-Precision Machined Brass
- ✔ Restores Correct Fuel Mixture
- ✔ Direct fit for 2.5HP to 3.5HP models
Technical Specs
| SKU / MPN: | 309-03151-3 |
| Jet Size: | #86 |
| Material: | Brass |
| System: | Carburetor / Fuel |
Compatibility / Fitment Guide
| Make/System | Model/Application | Notes |
|---|---|---|
| Tohatsu 2-Stroke | M2.5A2, M3.3, M3.5A2, M3.5B2 | Standard OEM Jet |
| Nissan 2-Stroke | NS2.5A2, NS3.5A2, NS3.5B2 | Cross Reference Exact |
| Mercury 2-Stroke | 2HP, 2.5HP, 3.3HP | For Tohatsu-based models |
| Tohatsu 4-Stroke | MFS15, MFS20, MFS25, MFS30, MFS40 | Check Carburetor Diagram |
OEM Cross Reference
| Tohatsu / Nissan | 309-03151-3, 309031513 |
| Mercury Marine | 815029-3, 8150293 |
Questions & Answers
Is this a genuine original part?
Yes, this is a genuine Tohatsu OEM part. 4boats.co.uk sources parts directly to ensure the highest quality and perfect fitment for your engine.
How do I know if it is compatible?
Please check your engine's parts manual. If it calls for Main Jet #86 or part number 309-03151-3 (Tohatsu) or 8150293 (Mercury), this is the correct component.
Can I use this for high-altitude running?
#86 is the standard jet for sea-level operation in most 2.5/3.5 models. For high-altitude operation, you may require a different size jet (leaner mixture); please consult your service manual for recommended sizes.
Note: Please verify your original part number against the references above before purchasing. Correct jetting is critical for engine health.
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