1. Boat Outboard Engines To Buy
  2. sku: 22697336357628603
  3. PARTMAN 3303-803687A04

PARTMAN 3303-803687A04 Boat Engine Carb 842001100149 803687T04 6HP 9.8HP

fits model: Mariner. make: Mercury.

3303-803687a04 Partman 842001100149 Boat Engine 803687t04 Carb For Mercury Mariner 6hp 8hp 9.8hp

( Brand: Partman ), ( Part Type: Engine ), ( Warranty: 90 Day ), ( Replace Number 1: 3303-803687a3 ), ( Replace Number 2: 3303-803687t03 ), ( Replace Number 3: 3303-803687a2 ), ( Replace Number 4: 3303-803687t02 ), ( UPC: 842001100149 )

Review PARTMAN Boat Engine Carb Mercury 6hp 8hp 9.8hp fits MARINER

The **Partman 842001100149 Carburetor (3303-803687A04 / 803687T04)** is a precision-engineered replacement carburetor designed specifically for Mercury Mariner outboard motors in the 6 horsepower, 8 horsepower, and 9.8 horsepower series, ensuring optimal performance, fuel efficiency, and reliability for both recreational and light-duty boating applications. This high-quality carburetor is meticulously crafted to match the exact specifications of the original equipment manufacturer (OEM) components, guaranteeing seamless integration with your engine s fuel delivery system. Built with durable materials, including corrosion-resistant metals and precision-machined internals, it is engineered to withstand the harsh marine environment, including exposure to saltwater, humidity, and temperature fluctuations, while maintaining consistent throttle response and smooth operation.

The **803687A04 / 803687T04 carburetor** features a robust float bowl assembly that regulates fuel flow with exceptional accuracy, preventing fuel starvation or excessive flooding under varying load conditions. Its advanced jet design ensures proper air-fuel mixture calibration, promoting cleaner combustion, reduced emissions, and extended engine life. The carburetor s internal components, such as the throttle body, mixture screws, and pilot jets, are designed for easy access and adjustment, allowing for fine-tuning to match specific operating conditions, whether you re cruising at low speeds or accelerating under full load. This adaptability makes it an ideal choice for anglers, weekend boaters, and those who demand dependable performance from their Mercury Mariner engines.

For ease of installation, the **Partman 842001100149 carburetor** is engineered to fit directly onto the engine s intake manifold, requiring minimal modifications and no additional modifications to the fuel lines or electrical connections. Its universal compatibility with the 6HP, 8HP, and 9.8HP Mercury Mariner models ensures that boat owners can restore their engine s performance without the hassle of sourcing multiple parts. Whether replacing a worn-out OEM carburetor or upgrading to a more durable aftermarket solution, this carburetor delivers the reliability and efficiency needed to keep your outboard running at peak condition for years to come. With its focus on performance, durability, and ease of maintenance, the **803687A04 / 803687T04 carburetor** is a trusted upgrade for anyone looking to enhance the longevity and responsiveness of their Mercury Mariner outboard motor.

### **Pros and Cons of Buying a Partman 842001100149 Carburetor (3303-803687A04 / 803687T04) for Mercury Mariner 6HP, 8HP, and 9.8HP Engines**

#### **Pros:**

1. **Direct Compatibility** The Partman carburetor is specifically designed as a drop-in replacement for the original Mercury Mariner 6HP, 8HP, and 9.8HP carburetors (3303-803687A04 and 803687T04). This means it fits without modification, making installation straightforward for DIYers or mechanics.

2. **Improved Performance** Partman carburetors are often tuned for better fuel efficiency, smoother operation, and slightly improved throttle response compared to stock units, which can degrade over time.

3. **Durability** Partman uses high-quality materials and precision engineering, which can extend the life of the carburetor compared to worn-out OEM parts. This reduces the risk of leaks, clogs, or performance drops.

4. **Cost-Effective Replacement** While not always the cheapest option, it is often more affordable than purchasing a used or refurbished OEM carburetor. It also avoids the hassle of sourcing rare parts.

5. **Easier Maintenance** The design may simplify cleaning and adjustment compared to older, more complex carburetors, making future upkeep less time-consuming.

6. **Warranty Coverage** Partman typically offers a warranty (varies by model), providing some protection against manufacturing defects.

7. **Aftermarket Support** Partman is a well-known brand in the marine aftermarket, so finding replacement parts or additional tuning kits is easier than with discontinued OEM components.

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#### **Cons:**

1. **Potential Performance Trade-Offs** While some Partman carburetors improve performance, others may not match the exact tuning of the original. In rare cases, they could result in slightly less power or fuel efficiency if not properly adjusted.

2. **Learning Curve for Tuning** If the carburetor requires manual tuning (e.g., adjusting jets or floats), inexperienced users might struggle to optimize it correctly, leading to poor performance or fuel waste.

3. **Compatibility with Modifications** If the engine has been heavily modified (e.g., upgraded exhaust, larger prop, or performance chips), the Partman carb may not be the best fit without additional tuning. Stock carburetors are often tuned for stock engines.

4. **Quality Variability** As with any aftermarket part, there is a risk of receiving a lower-quality unit if purchasing from an untrusted seller. Always buy from reputable dealers to avoid counterfeit or poorly made carburetors.

5. **Potential for Leaks or Adjustment Issues** Some users report that aftermarket carbs can develop leaks at the gaskets or require frequent adjustments to maintain proper idle and throttle response.

6. **Not a "Set-and-Forget" Solution** Unlike a brand-new OEM carburetor, an aftermarket unit may still require occasional cleaning or maintenance to prevent clogs from marine debris or fuel additives.

7. **Limited Long-Term Data** While Partman is a trusted brand, long-term reliability data for this specific carburetor on older Mercury engines may not be as extensive as for newer models.

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### **Conclusion**

The Partman 842001100149 carburetor is a **solid drop-in replacement** for the Mercury Mariner 6HP, 8HP, and 9.8HP engines, offering improved durability and performance over a degraded OEM unit. It is particularly beneficial for owners who want a **cost-effective, easy-to-install upgrade** without major engine modifications. However, it is not a "perfect" solution it requires proper installation and occasional tuning to ensure optimal performance.

If the engine is **stock or lightly modified**, the Partman carburetor is a **reliable choice** that balances cost, ease of use, and performance. For **heavily modified engines**, a more aggressively tuned carburetor (or even an electronic fuel injection system) might be preferable.

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### **Recommendation**

- **Buy from a reputable dealer** (e.g., Partman s official website, MarineParts.com, or trusted marine supply stores) to ensure authenticity and warranty coverage.

- **Follow the installation and tuning instructions carefully** this carburetor may require adjustments to idle speed, mixture screws, and float level for best results.

- **Consider a carburetor cleaning kit** (e.g., carburetor cleaner or a rebuild kit) if the engine has significant marine buildup, as this can extend the life of the new carb.

- **Monitor performance after installation** if the engine runs rough, stalls, or loses power, consult a marine mechanic to verify proper tuning.

- **If the engine is heavily modified**, research whether a more performance-oriented carburetor (e.g., a high-flow aftermarket carb) would be better suited.

**Final Verdict:** The Partman 842001100149 carburetor is a **good upgrade choice** for stock or lightly modified Mercury Mariner 6HP, 8HP, and 9.8HP engines, provided the buyer is willing to put in the effort for proper installation and tuning. For best results, pair it with regular maintenance.

Details:

Engine Position: Outboard, Replaces Mercury Carburetor Assembly Part OEM Number#: 3303-803687A04 3303-803687A3 3303-803687A2 3303-803687T04 3303-803687T03 3303-803687T02. Package Includes: As Picture Show. No Instruction Included.

specifications ouboaen:

  • for models: Mariner
  • for makes: Mercury
  • brand: Partman
  • part type: Engine
  • warranty: 90 Day
  • replace number 1: 3303-803687a3
  • replace number 2: 3303-803687t03
  • replace number 3: 3303-803687a2
  • replace number 4: 3303-803687t02
  • upc: 842001100149

seller ouboaen:

  • # reviews: 21763
  • city: IL / NJ WAREHOUSES
  • rating: 99.0%

general ouboaen:

  • condition: New
  • Boat Parts > Outboard Engines Components > Other

returns ouboaen:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

payments ouboaen:

  • credit card: Discover
  • wallet: Google-pay
  • other

shipping ouboaen:

  • cost: $0.00
  • service: Standard
  • type: Fixed
  • class: Standard
  • transit: 3-7 Days

offer ouboaen:

  • started: March 17, 2026
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
for models: mariner, for makes: mercury, part type: engine, warranty: 90 day, replace number 1: 3303-803687a3, replace number 2: 3303-803687t03, replace number 3: 3303-803687a2, replace number 4: 3303-803687t02,
category: boat parts > outboard engines components, sku: 22697336357628603,
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