Carburetor Assembly – Fits Mercury & Tohatsu 25HP 30HP 2-Stroke Outboard Engines
This carburetor assembly is engineered for Mercury Mariner 25HP and 30HP 2-stroke outboard engines (International models, 2001–2006), as well as Tohatsu and Nissan 25HP and 30HP 2-stroke outboards. It provides reliable fuel delivery and smooth engine performance across a range of compatible models from the mid-1990s to mid-2000s.
Direct replacement for OEM part numbers: 3P0-03200-0, 3P0032000, 3P0032000M, 346-03200-0, and 346032000M. This aftermarket carburetor is built to OEM specifications, ensuring proper fit and function without the premium price.
- Complete carburetor assembly ready for installation
- Designed for 2-stroke fuel systems
- Ensures optimal air-fuel mixture for reliable starts and consistent power
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand |
Part Number |
| Tohatsu / Nissan |
3P0-03200-0 |
| Tohatsu / Nissan |
3P0032000 |
| Tohatsu / Nissan |
3P0032000M |
| Tohatsu / Nissan |
346-03200-0 |
| Tohatsu / Nissan |
346032000M |
Compatible Engine Models
Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.
| Brand |
Model |
Rated HP |
Stroke |
Years |
| Mercury & Mariner |
25HP 30HP (INTERNATIONAL) |
25HP / 30HP |
2-Stroke |
2001 – 2006 |
| Nissan |
NS30A3 |
30HP |
2-Stroke |
2002 |
| Tohatsu |
M30A3 |
30HP |
2-Stroke |
1996 |
| Nissan |
NS25C2 |
25HP |
2-Stroke |
2002 |
| Tohatsu |
M25C2 |
25HP |
2-Stroke |
1996 |
Technical Specifications
| Specification |
Value |
| Part Type |
Carburetor Assembly |
| Application |
Outboard Engine |
| Engine Type |
2-Stroke |
| Horsepower Range |
25HP – 30HP |
| OEM Number |
3P0-03200-0, 346032000M |
Package Contents
Installation Guide
- Disconnect the fuel line from the old carburetor and remove the throttle linkage. Ensure the engine is cool and the fuel valve is closed.
- Unbolt the carburetor from the intake manifold using the appropriate socket or wrench. Carefully lift the old carburetor away from the engine.
- Inspect the intake manifold gasket; replace it if worn or damaged to prevent air leaks.
- Position the new carburetor onto the intake manifold, aligning all mounting holes. Install the mounting bolts and tighten evenly to the manufacturer's torque specification.
- Reconnect the throttle linkage and choke cable, ensuring smooth operation without binding.
- Attach the fuel line securely to the carburetor inlet and confirm all clamps are tight.
- Open the fuel valve and check for leaks around all connections. Wipe any spilled fuel immediately.
- Prime the carburetor by squeezing the primer bulb until firm, then start the engine and allow it to warm up.
- Adjust the idle speed and mixture screws as needed for smooth idle and throttle response. Refer to your engine's service manual for precise adjustment procedures.
- Test the engine at various throttle positions to ensure proper acceleration and no hesitation.
Troubleshooting & FAQ
Q: How do I confirm this carburetor fits my engine?
A: Cross-reference your engine's model and year in the Compatible Engine Models table above. Verify that the OEM part number on your original carburetor matches one of the numbers listed in the Part Number Cross-Reference section.
Q: What are the signs that my carburetor needs replacement?
A: Common symptoms include hard starting, rough idling, poor acceleration, excessive fuel consumption, or the engine stalling at low speeds. If cleaning and adjustment don't resolve these issues, replacement is usually required.
Q: How often should I replace or service the carburetor?
A: Carburetors don't have a fixed replacement interval. Routine cleaning and inspection every season (or every 100 hours of operation) can extend lifespan. Replace when internal passages are clogged beyond cleaning or when gaskets and seals fail.
Q: Will this carburetor work with ethanol-blended fuel?
A: Yes, this carburetor is compatible with modern ethanol-blended fuels (up to E10). However, always use fresh fuel and add a quality fuel stabilizer if storing the engine for extended periods to prevent varnish buildup.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.