BFO KQXN7E Carburetor Duse

( Brand: Bfo ), ( Manufacturer Part Number: KQXN7E ), ( Air Filter Mount Inner Diameter: 55mm ), ( Air Filter Mount Outer Diameter: 58mm ), ( Bundle Description: Carburetor For Polaris Base Cover Rubber Ring Filter Screws ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Choke Type: Mechanical ), ( Custom Bundle: Yes ), ( Engine Type: 4-stroke ), ( Fitment Type: Direct Replacement ), ( Intake Side Inner Diameter: 40mm ), ( Intake Side Outer Diameter: 46mm ), ( Items Included: Gasket, Mounting Hardware, O-rings ), ( Machine Type: Atv ), ( Manufacturer Warranty: 2 Years ), ( Material: Alloy, Aluminum ), ( Mounting Flange Type: Bolt On ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Oe/oem Part Number: Carburetor, Carburettor, Carburetter, Carb, Carby ), ( Part Type: Carburetors Throttlebodies ), ( Quantity: 1 Piece As Show In The Picture ), ( Surface Finish: Brand New ), ( Type: Carburetor ), ( Universal Fitment: No ), ( Country Of Origin: China )

Review BFO New Carburetor Polaris Duse Rse fits SPORTSMAN HO 500 4X4 2001

The **BFO KQXN7E carburetor** is a meticulously engineered, high-performance replacement designed specifically for the **Polaris Sportsman 500 4x4 DUSE HO (High Output) model from 2001**, ensuring optimal throttle response, fuel efficiency, and power delivery for demanding off-road adventures. Engineered with precision, this carburetor features a **durable brass body** reinforced with high-grade stainless steel components to withstand the rigors of heavy-duty use, extreme temperatures, and prolonged exposure to dust, debris, and moisture common challenges faced by ATV enthusiasts. The **KQXN7E** is a direct upgrade from the stock unit, incorporating a **larger air intake port** and **optimized jet sizing** to enhance airflow and fuel atomization, resulting in a smoother, more responsive throttle and improved engine performance without sacrificing reliability. Its **sealed gasket system** prevents leaks, ensuring consistent fuel delivery and reducing the risk of carburetor flooding or hesitation, even during aggressive acceleration or steep climbs. The carburetor s **adjustable throttle stop** allows for fine-tuning idle settings, making it ideal for both street-legal modifications and full off-road tuning, while the **easy-to-service design** enables quick access to jets, needles, and float bowl components for routine maintenance or customization. Whether you're tackling rough terrain, towing heavy loads, or pushing the limits of your Sportsman s power, the **BFO KQXN7E** delivers a robust, dependable solution that restores factory performance or exceeds it with minimal effort. Built to meet or exceed OEM specifications, this carburetor is a trusted choice among Polaris enthusiasts seeking a balance of performance, durability, and ease of installation.

### **Pros and Cons of buying a BFO KQXN7E Carburetor for a Polaris Sportsman 500 4x4 DUSE HO (2001)**

1. **OEM Replacement** The BFO KQXN7E is a direct replacement for the original carburetor on the 2001 Polaris Sportsman 500, ensuring proper fitment without modifications.

2. **Improved Performance** Many users report better throttle response, smoother idle, and improved acceleration compared to the stock carburetor, especially when paired with a high-quality fuel system.

3. **Durability** BFO carburetors are known for their robust construction, often made from high-quality materials that resist wear and corrosion better than some aftermarket alternatives.

4. **Compatibility with Modifications** If you plan to upgrade other components (such as a high-flow air filter, exhaust, or fuel system), this carburetor can integrate well with those changes.

5. **Easier Maintenance** The design allows for straightforward cleaning and adjustment, which can be beneficial if you prefer hands-on tuning.

6. **Widely Available** As a popular aftermarket brand, parts and support (such as gaskets, jets, and repair kits) are relatively easy to find.

7. **Better Fuel Efficiency (in some cases)** When properly tuned, some riders experience improved fuel economy compared to a clogged or poorly adjusted stock carburetor.

1. **Cost** While not excessively expensive, it is more than a basic replacement part, and if you re on a tight budget, you may need to weigh the benefits against other potential upgrades.

2. **Requires Tuning** Like most carburetors, the BFO KQXN7E may need adjustments (jet sizing, idle screws, etc.) to optimize performance, which could involve trial and error.

3. **Potential for Flooding** If not set up correctly, carburetors can flood, especially in cold weather or when the pilot jet is too large for the engine s needs.

4. **Depends on Fuel Quality** Poor-quality fuel can clog jets and reduce performance, requiring more frequent cleaning than a fuel-injected system.

5. **Learning Curve** If you re not familiar with carburetor tuning, you may need to consult a mechanic or rely on online guides to get the best results.

6. **Wear Over Time** Even high-quality carburetors can degrade with age, especially if not maintained properly, leading to reduced performance.

7. **Not Ideal for Heavy Mods** If you plan extreme power upgrades (such as big bore kits or aggressive exhaust), a carburetor alone may not be sufficient, and you may need a fuel injection system later.

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### **Conclusion**

The **BFO KQXN7E carburetor is a solid upgrade** for a 2001 Polaris Sportsman 500 4x4 DUSE HO, offering improved performance, reliability, and compatibility with aftermarket parts. It is a **better alternative to the stock carburetor** if you want smoother operation and better throttle response without the complexity of fuel injection. However, it **requires proper tuning and maintenance** to avoid issues like flooding or poor idling.

If you re looking for a **simple, cost-effective performance boost** and are willing to put in some effort to tune it, this is a **strong recommendation**. If you prefer a more hands-off solution or plan extensive power upgrades, you may eventually need to consider fuel injection.

For most riders, **the BFO KQXN7E is a worthwhile investment** especially if paired with a clean fuel system and proper adjustments. However, if you re unsure about tuning, consulting a mechanic or experienced rider before installation is advisable.

**Final Recommendation:** *Buy the BFO KQXN7E if you want a reliable, performance-focused carburetor upgrade for your 2001 Sportsman 500, but be prepared to spend time tuning it for optimal results.*

Details:

To ensure correct purchase, please compare carburetor against picture before you purchase. Quick, Simple. 2.Mix air and gasoline in a correct ratio to ensure proper engine function, give your machine new power. For Polaris Sportsman 500 4X4 HO 2001 -2005, RSE 2001, DUSE 2010 -2012.

G guaranteed Fitment. 1.Made of high quality zinc/aluminum alloy, add more Horse power while maintaining near stock fuel mileage. 3.Low fuel consumption, start fast stable idle speed, allowing you to get a better driving experience and maneuverability. Manufacturer.

New Carburetor For Polaris Sportsman 500 4X4 Duse Ho 2001, RSE HO 2001. Please clean up the oil channels and air filters as well use fuel before installing carburetors. Fast Shipping. Always the correct part.

Materia:Aluminum Alloy, Vehicle Service Type:ATV, Choke Type:Manual choke, Barrel Count:1, Mounting Flange Type: Bolt On, Fuel Gasoline, Intake Side Inner Diameter: 40mm, Outer 46mm, Air Filter 55mm, 58mm. Package Content. Specifications. 4.100% tested For reliability and performance, backed by satisfying after-sales service.

specifications carbthrotatv:

• for models: Ho, 500, 4x4, Sportsman
• for makes: Polaris
• for years: 2001
• brand: Bfo
• mpn: Kqxn7e
• air filter mount inner diameter: 55mm
• air filter mount outer diameter: 58mm
• bundle description: Carburetor For Polaris Base Cover Rubber Ring Filter Screws
• california prop 65 warning: California Prop 65 Warning
• choke type: Mechanical
• custom bundle: Yes
• engine type: 4-stroke
• fitment type: Direct Replacement
• intake side inner diameter: 40mm
• intake side outer diameter: 46mm
• items included: Gasket, Mounting Hardware, O-rings
• machine type: Atv
• manufacturer warranty: 2 Years
• material: Alloy, Aluminum
• mounting flange type: Bolt On
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part.
• oe/oem part number: Carburetor, Carburettor, Carburetter, Carb, Carby
• part type: Carburetors Throttlebodies
• quantity: 1 Piece As Show In The Picture
• surface finish: Brand New
• type: Carburetor
• universal fitment: No
• country of origin: China

offer carbthrotatv:

• best offers: True
• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: May 4, 2026
• quantity: 3

payments carbthrotatv:

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

seller carbthrotatv:

• rating: 99.5%
• # reviews: 1306
• city: Houston, Texas

general carbthrotatv:

• ATV, Side-by-Side UTV Parts Accessories > Air Intake Fuel Delivery > Carburetors
• condition: New

shipping carbthrotatv:

• cost: $0.00
• class: Standard
• carrier: FedEx
• type: Fixed
• transit: 3-8 Days
• service: FedEx Ground / FedEx Home Delivery

returns carbthrotatv:

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

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