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Carburetor Assembly – Fits Tohatsu/Nissan 25-30HP 2-Stroke (Replaces 3P0-03200-0, 346-03200-0, 853720A1)

Sale price $95.00 Regular price $152.00
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Carburetor Assembly – Fits Tohatsu/Nissan 25-30HP 2-Stroke (Replaces 3P0-03200-0, 346-03200-0, 853720A1) is backordered and will ship as soon as it is back in stock.


Worry-free returns

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This Carburetor Assembly – Fits Tohatsu/Nissan 25HP & 30HP 2-Stroke Outboards (Replaces 3P0-03200-0, 346-03200-0) is designed for Tohatsu and Nissan 25HP and 30HP 2-stroke outboard engines. It is a direct fit for models including M25C3, M30A3, M30A4, NS25C2, NS25C3, NS30A3, and NS30A4 manufactured between 2002 and 2005.

This assembly provides a direct replacement for Tohatsu part 3P0-03200-0, Nissan part 346-03200-0, and Mercury/Mariner parts 853720A1 and 853720A8.

  • Engineered for direct bolt-on installation.
  • Constructed from durable die-cast aluminum alloy.
  • Includes all necessary components for a complete carburetor replacement.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.

Brand Part Number
Tohatsu 3P0-03200-0 / 3P0032000 / 3P0032000M
Nissan 346-03200-0 / 346032000 / 346032000M
Mercury/Mariner 853720A1 / 853720A8

Engine & Model Compatibility

Confirm your engine model and year in the tables below to ensure proper fitment.

This part fits Tohatsu 2-stroke 25HP and 30HP outboards from 2002–2005.

It also fits equivalent Nissan models sold under the NS series designation.

Compatibility extends to certain international Mercury and Mariner 25HP and 30HP 2-stroke models.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Tohatsu M25C3 25 2-Stroke 2002–2005 3P0-03200-0
Tohatsu M30A3 30 2-Stroke 2002–2005 3P0-03200-0
Tohatsu M30A4 30 2-Stroke 2002–2005 3P0-03200-0
Nissan NS25C2 25 2-Stroke 2002–2005 346-03200-0
Nissan NS25C3 25 2-Stroke 2002–2005 346-03200-0
Nissan NS30A3 30 2-Stroke 2002–2005 346-03200-0
Nissan NS30A4 30 2-Stroke 2002–2005 346-03200-0
Mercury 25HP 25 2-Stroke 2001–2006 853720A1 International models
Mercury 30HP 30 2-Stroke 2001–2006 853720A1 International models

Technical Specs

Product Type
Carburetor Assembly
Installation
Direct bolt-on replacement
Fuel Type
Gasoline (petrol)
Connection
Multiple ports (intake, fuel inlet)
Housing Material
Die-cast aluminum alloy
Housing Color
Silver/metallic
Dimensions
Approximately 67.16mm × 41.54mm × 35.95mm
Fitting Type
Bolt-on flanged mounting
Warranty
1 year against manufacturing defects (JLM Marine)
Other Technical Attributes
Complete carburetor assembly with all necessary components for installation

What’s in the Box

  • 1 x Carburetor Assembly (3P0-03200-0 / 346-03200-0 / 853720A1)

Installation Notes

  1. Ensure the engine is off and cool. Disconnect the spark plug wires and negative battery terminal for safety.
  2. Turn off the fuel supply and carefully disconnect the fuel line from the carburetor, managing any spillage.
  3. Remove the airbox cover and filter to access the carburetor.
  4. Disconnect the throttle and choke linkages. Note their positions for reassembly.
  5. Unbolt and remove the old carburetor from the intake manifold.
  6. Clean the manifold mounting surface, removing any old gasket material or debris.
  7. Install the new carburetor and gasket, ensuring a secure fit. Tighten the mounting bolts evenly.
  8. Reconnect the throttle and choke linkages, and reattach the fuel line.
  9. Reinstall the airbox and reconnect the battery terminal and spark plug wires.
  10. Turn the fuel supply on, prime the system if needed, and check for leaks before starting the engine.

Troubleshooting & FAQ

How do I confirm this carburetor fits my specific engine model?

The most reliable method is to match your engine's model number and year against the compatibility table. Also, compare the part numbers stamped on your old carburetor with the cross-references provided_ 3P0-03200-0, 346-03200-0, or 853720A1. Visually comparing your old part to our product images is a helpful final check.

What are common signs that my carburetor needs replacement?

Symptoms of a failing carburetor include difficulty starting, rough idling, stalling at low speeds, poor acceleration, increased fuel consumption, or black smoke from the exhaust. These issues often arise from internal clogs, worn components, or seal failure.

Will I need to adjust this carburetor after installation?

This carburetor is pre-adjusted at the factory to match OEM specifications for the listed models. In most cases, it will perform correctly out of the box. However, minor idle speed or air/fuel mixture adjustments may be necessary depending on your specific engine's condition, altitude, and climate.

What is the main difference between this aftermarket part and an OEM one?

The primary difference is the manufacturer. This part is not made by Tohatsu, Nissan, or Mercury. It is an aftermarket component built to the same performance standards and material specifications as the original, offering a cost-effective solution without compromising quality.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

  • Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended for safety and performance.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
  • Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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