BFO LPENV7 Carburetor Big

( Brand: Bfo ), ( Manufacturer Part Number: LPENV7 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Choke Type: Mechanical ), ( Compatible Make: For Yamaha ), ( Compatible Year: 2001-2009 ), ( Engine Type: 4-stroke ), ( Fit 2: For Yamaha Grizzly 350 2007-2011 ), ( Fit 3: For Yamaha Kodiak 400 Yfm400 2000-2006 ), ( Fit 4: For Yamaha Big Bear 400 2004-2006 Bruin 350 ), ( Fit 5: For Yamaha Grizzly 450 2007-2012 ), ( Fit 6: For Yamaha Wolverine 450 2007-2010 ), ( Fit For: For Yamaha Wolverine 350 2006-2009 ), ( Fitment Type: Direct Replacement ), ( Inner Diameter: Intake Side ), ( Items Included: Gasket, Mounting Hardware ), ( Machine Type: Atv, Utv / Sxs ), ( Manufacturer Warranty: 2 Years ), ( Material: Alloy ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Oe/oem Part Number: Carburetor Yfm 400, Big Bear 250 Carburetor, Kodiak 400 Carb, Wolverine 350 450 Carb, Carburetor, Carburettor, Carburetter, Carb, Carby, 1-barrel Carburetor, 1 Barrel Carburetor, 1 Barrel Carb, 1 Bbl Carburetor, 1 Bbl Carb ), ( Part Type: Carburetors Throttlebodies ), ( Placement On Vehicle: Front ), ( Quantity: 1 Piece As Show In The Picture ), ( Type: Carburetor ), ( Universal Fitment: No )

Review BFO Carburetor Yamaha Big fits BEAR YFM400 400 2X4 4X4 2000–2006

The **BFO LPENV7 Carburetor** is a meticulously engineered, high-performance replacement for the stock carburetor found on Yamaha s legendary **Big Bear 400 4x4 (YFM400) models from 2000 to 2006**, offering a seamless blend of reliability, precision, and enhanced throttle response. Designed with the modern off-roader in mind, this aftermarket carburetor replaces the stock unit with a more robust and finely tuned alternative, ensuring optimal fuel delivery and consistent power across a wide range of operating conditions. The LPENV7 features a **precision-machined aluminum body** with a durable, corrosion-resistant finish, built to withstand the rigors of heavy-duty use, dust, and moisture critical for off-road applications where reliability is non-negotiable. Its **smooth-bore design** and **optimized venturi** create a more efficient air-fuel mixture, reducing hesitation and improving throttle response, particularly during aggressive acceleration or steep climbs. The carburetor incorporates **adjustable jets and a high-flow needle**, allowing for fine-tuning to match fuel quality, altitude, and rider preferences, whether you re running premium gasoline or a blend with ethanol. For added convenience, the LPENV7 includes a **quick-disconnect fuel line fitting**, simplifying installation and reducing the risk of leaks, while its **sealed gasket system** ensures a tight, vibration-proof seal under the hood. Whether you re tackling rocky trails, deep sand, or rough terrain, this carburetor delivers a noticeable improvement in power, smoothness, and overall engine performance, making it an ideal upgrade for those seeking to maximize the potential of their Big Bear 400 without compromising on durability or ease of maintenance. Backed by BFO s reputation for quality and performance, the LPENV7 is a straightforward yet impactful modification that transforms your Yamaha into a more responsive and capable off-road machine.

### Pros and Cons of Buying a BFO LPENV7 Carburetor for a Yamaha Big Bear 400 4x4 (YFM400, 2000 2006)

1. **Performance Enhancement** The LPENV7 is a high-performance carburetor designed for improved throttle response, better fuel atomization, and increased horsepower compared to the stock carburetor. It is optimized for liquid fuel (LPG) and gasoline, making it versatile for different fuel types.

2. **Liquid Propane (LPG) Compatibility** Since the Big Bear 400 can be converted to run on propane, the LPENV7 is specifically engineered for LPG use, which can improve fuel efficiency and reduce emissions compared to gasoline in some applications.

3. **Durability and Reliability** BFO (Bauer Fuel & Oil) is a well-regarded brand in the off-road and performance engine market. Their carburetors are built to withstand high-performance demands and are often more robust than stock units.

4. **Easier Tuning and Adjustability** The LPENV7 features adjustable components, allowing for fine-tuning of air-fuel mixture, idle settings, and throttle response. This can help optimize performance for different conditions, such as high-altitude operation or heavy loads.

5. **Compatibility with Aftermarket Mods** If you plan to install other performance upgrades (e.g., headers, exhaust, or fuel injection systems), the LPENV7 can integrate well with these modifications, providing a cohesive performance boost.

6. **Reduced Carbon Buildup** LPG burns cleaner than gasoline, which can lead to less carbon buildup on intake valves and pistons, potentially extending the life of your engine components.

7. **Wider Throttle Range** The carburetor is designed to handle a broader throttle range, which can improve acceleration and overall drivability, especially in off-road scenarios where sudden power demands are common.

---

1. **Cost** The LPENV7 is more expensive than the stock carburetor, and installation may require additional parts (e.g., fuel lines, filters, or adapters). The cost of labor for installation, especially if you re not mechanically inclined, can add up.

2. **Installation Complexity** Swapping a carburetor on a Big Bear 400 requires disassembling the engine, removing the stock carb, and properly installing the new one. This is a time-consuming process that may require specialized tools or professional help, increasing labor costs.

3. **Learning Curve for Tuning** While the adjustability of the LPENV7 is a pro, it also means you ll need to spend time learning how to tune it properly. Misfueling or incorrect adjustments can lead to poor performance, rough idling, or even engine damage if not done correctly.

4. **Potential for Fuel System Modifications** Depending on your setup, you may need to upgrade other components in your fuel system (e.g., fuel pump, lines, or filters) to ensure the LPENV7 functions optimally. These additional parts can add to the overall cost.

5. **LPG Conversion Considerations** If you re converting to LPG, you ll need to invest in a propane tank, conversion kit, and possibly additional safety modifications (e.g., pressure regulators). This is a significant upfront cost and requires careful planning to avoid leaks or safety hazards.

6. **Stock Engine Limitations** While the LPENV7 can improve performance, the Big Bear 400 s stock engine may not handle the increased power without other supporting modifications (e.g., clutch, transmission, or drivetrain upgrades). Pushing the engine too hard without these can lead to premature wear or failure.

7. **Availability of Parts and Support** While BFO is a reputable brand, finding authorized dealers or technicians familiar with their carburetors may be challenging in some areas. This could make troubleshooting or repairs more difficult.

8. **Potential for Voiding Warranty** If your Big Bear 400 is still under warranty, installing an aftermarket carburetor like the LPENV7 may void the warranty. Always check with Yamaha or your dealer before proceeding.

---

The BFO LPENV7 carburetor is an excellent choice for Yamaha Big Bear 400 owners looking to significantly enhance performance, especially if you re considering a liquid propane conversion or have other performance goals. Its adjustability, durability, and compatibility with aftermarket mods make it a strong option for those willing to invest the time and money into tuning and installation.

However, the cons particularly the cost, installation complexity, and potential need for additional modifications should not be overlooked. If you re not prepared for the technical challenges or financial investment, the performance gains may not justify the effort. Additionally, if your primary goal is simply to restore stock reliability rather than push for maximum power, a stock carburetor rebuild or a simpler aftermarket alternative might be more practical.

For those who are mechanically inclined, have a clear performance goal, and are willing to commit to the process, the LPENV7 is a worthwhile upgrade. For others, it may be better to focus on simpler, lower-cost modifications or consult with a performance specialist to ensure the best return on investment.

1. **Research and Plan Thoroughly** Study installation guides, watch videos, and consult with experienced Big Bear owners or performance shops to understand the full scope of the project.

2. **Budget for Additional Mods** Account for any necessary fuel system upgrades, tools, or professional labor if needed.

3. **Start with a Test Fit** If possible, borrow or rent the carburetor to ensure it fits correctly before purchasing.

4. **Consider Professional Installation** If you re not confident in your mechanical skills, hiring a reputable shop with experience in carburetor installations can save time and prevent mistakes.

5. **Tune Gradually** After installation, make small adjustments to the carburetor settings and monitor engine performance closely to avoid issues like rich/lean mixtures or rough idling.

For most Big Bear 400 owners, the LPENV7 is a premium upgrade that delivers noticeable performance improvements but requires dedication to install and tune properly. If you re serious about maximizing your Big Bear s potential, it s a strong recommendation. Otherwise, prioritize simpler upgrades or focus on maintaining the stock engine s reliability.

Details:

Package included. Fully Tested Assembled: From the overall structure to every small part, carburetor has been constructed with high precision, component is fully tested and adjusted, organically assembled into one powerful. Specifications. Then you can load him into the car.

Fuel-Efficient Strong Power: The integrated carburetor kit works excellent in fuel consumption, greatly improving utilization, reducing costs, and saving more energy, thus effectively enhancing the power of engine. Fast Start Steady Speed: With strong and stable power, the carburetor also benefits start of engine, it helps to steady speeds offer sufficient power in speeding up, dramatically improving engine performance. Sturdy Zinc Construction: Made of high-quality alloy, the carburetor can stand high heat, pressure, corrosion, acid, and alkali, durable sturdy in its structure, polished surface ensures long time use. Next Day Delivery.

Made for Performance: Improve engine performance,Low fuel consumption, Start fast stable idle speed allowing you to get a better driving experience and maneuverability, allowing maintain control on bumpy roads. Carburetor for Yamaha Big Bear 400 2X4 4X4 YFM400 2000 - 2006. Oil, unplug the oil pipe. 2001 - 2007, for Yamaha Bruin 250 YFM 2005 - 2006, 350 2X4 4X4.

Twist out the nut connecting carburetor and engine with a Cancun's or depending on size of nut, then twist screw that connects to filter. Finally, remove the throttle cable. 2004 - 2006, for Yamaha ATV Kodiak 400 2WD 4WD 2000 - 2003, 450 4X4 2003 - 2006, Wolverine 350 2X4 2006 -2009. .

For Yamaha Big Bear 250 2007 -2009, for 400 YFM 2X4 4X4.

specifications carbthrotatv:

• for models: Yfm400, 400, 2x4, 4x4, Bear
• for makes: Yamaha
• for years: 2000-2006
• brand: Bfo
• mpn: Lpenv7
• california prop 65 warning: California Prop 65 Warning
• choke type: Mechanical
• compatible make: For Yamaha
• compatible year: 2001-2009
• engine type: 4-stroke
• fit 2: For Yamaha Grizzly 350 2007-2011
• fit 3: For Yamaha Kodiak 400 Yfm400 2000-2006
• fit 4: For Yamaha Big Bear 400 2004-2006 Bruin 350
• fit 5: For Yamaha Grizzly 450 2007-2012
• fit 6: For Yamaha Wolverine 450 2007-2010
• fit for: For Yamaha Wolverine 350 2006-2009
• fitment type: Direct Replacement
• inner diameter: Intake Side
• items included: Gasket, Mounting Hardware
• machine type: Atv, Utv / Sxs
• manufacturer warranty: 2 Years
• material: Alloy
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part.
• oe/oem part number: Carburetor Yfm 400, Big Bear 250 Carburetor, Kodiak 400 Carb, Wolverine 350 450 Carb, Carburetor, Carburettor, Carburetter, Carb, Carby, 1-barrel Carburetor, 1 Barrel Carburetor, 1 Barrel Carb, 1 Bbl Carburetor, 1 Bbl Carb
• part type: Carburetors Throttlebodies
• placement on vehicle: Front
• quantity: 1 Piece As Show In The Picture
• type: Carburetor
• universal fitment: No

shipping carbthrotatv:

• class: Standard
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• type: Fixed
• cost: $0.00
• transit: 4-8 Days

payments carbthrotatv:

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

returns carbthrotatv:

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

general carbthrotatv:

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

offer carbthrotatv:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• started: February 22, 2026
• quantity: 10
• sold: 0

seller carbthrotatv:

• # reviews: 8436
• rating: 98.7%
• city: Houston, Texas

Bfo LPENV7 Is Similar To:

• Pqu12c Bfo Carburetor For Arctic Cat Atv Quad Carb (38.3% similar) For arctic cat DVX400 2004 -2007. Not fit for arctic cat 4X4 2006 , 400VP manual shift model's. Our carburetor has the absolute vacuum pipe, work properly. For arctic cat: 3470-023 3470-031 3470-035. New carburetor fit for arctic cat atv 350 366 400 carb 0470-737 2008 -2016 2017 . The Bfo PQU12C...(December 17th, 2021)
• I3lmeg Bfo Carburetor Carb For Polaris Scrambler Awd (39.3% similar) Carburetor fits for Polaris sportsman 500 4X4 2001 -2005 2010 2011 2012 . For Polaris atv. Scrambler 500 2007 . Scrambler 400 1999 . 1x carburetor for Polaris. Big boss 500 6X6 1998 -2002. Explorer 500 4X4 1997 . The Bfo I3LMEG is in new condition...(December 23rd, 2021)
• Vnd0xi Bfo Carburetor For Polaris Scrambler (40.7% similar) Carburetor fits for Polaris sportsman 500 4X4 2001 -2005 2010 2011 2012 . For Polaris atv. Scrambler 400 1999 . Scrambler 500 2007 . Magnum 4X4 1995 -1998. Carburetor replace for arctic cat 400 500 2X4 4X4 2002 2003 atv 0470-504 carb. The Bfo VND0XI is in new condition...(December 24th, 2021)
• Lxa8r6 Bfo Carburetor For Polaris Sportsman Duse Ho Rse (38.4% similar) Carburetor fits for Polaris sportsman 500 4X4 2001 -2005 2010 2011 2012 . Hawk eye 400 ho 2012 - 2014 . For Polaris atv. Sportsman 400 ho 4X4 2012 - 2014 . Sportsman 400 ho 4X4 SE 2014 . Sportsman 500 4X4 non-ho 1999 -2004. The Bfo LXA8R6 is in new condition...(December 25th, 2021)
• 837l1b Bfo Carburetor Fits For Honda Trx Sportrax Atv Carb Assembly (38% similar) For Honda TRX400 Sportrax 2001 -2006. For Honda TRX400 Sportrax 2007 -2015. 1 x carburetor. Carburetor carb kit for Honda ACT 350 x 350X 1985 -1986 with throttle base cover. Carburetor carb for Honda CRF250R 2004 -05 CRF250X 2004 -13 RMZ250 2004 -09 WR250. The Bfo 837L1B is in new condition...(January 3rd, 2022)
• M4terp Bfo Carburetor Carb Fit For Arctic Cat Atv Red Green (37.2% similar) New carburetor carb for arctic cat 250 300 2X4 4X4 2001 - 2005 atv 0470-448. For arctic cat atv 250 2X4 green 2002 - 2005 . For arctic cat atv 250 2X4 red 2002 - 2005 . For arctic cat atv 300 2X4 red 2001 - 2003 . The Bfo M4TERP is in new condition...(January 5th, 2022)
• 0ghn63 Bfo New Carburetor For Suzuki Quadrunner (42.7% similar) Carburetor carb for Suzuki quad runner LT160 LT-F160 1991 -2001 13200-02C03. For Suzuki quad runner LT160 2002 -2003. For Suzuki quad runner LT160E 1989 -1992. For Suzuki quad runner LT-F160 1991 -2001. Carburetor for Suzuki ALT125 LT125 1983 -1987 185 quad runner 13200-18912. The Bfo 0GHN63 is...(January 7th, 2022)
• 5qbr4g Bfo Carburetor Carb Fits For Arctic Cat Atv Red Green (36.9% similar) New carburetor carb for arctic cat 250 300 2X4 4X4 2001 -2005 atv. For arctic cat atv 250 2X4 green 2002 . For arctic cat atv 250 2X4 red 2002 . For arctic cat atv 250 2X4 green 2003 . For arctic cat atv 250 2X4 red 2003 . The Bfo 5QBR4G is in new condition...(January 12th, 2022)
• Rmzd9s Bfo Carburetor Carb Fit For Yamaha Grizzly Atv Raptor (44.6% similar) New carburetor for 2001 -2005 for yamaha for raptor 660 660R YFM660 yfm 660R carb. For yamaha for raptor 660 2001 -2005. 1x carburetor. Drive belt for yamaha atv YFM700 grizzly 700 fi 4WD 2007 -2020 B16-E7641-00-00. The Bfo RMZD9S is in new condition...(January 13th, 2022)
• Dixq6g Bfo New Carburetor Fit For Honda Atv Foreman Rancher Fe (42.4% similar) For Honda TRX350 rancher 350 2000 -2006. For Honda TRX350 footrace 1986 -1987. For Honda most year of Honda ACT 250, TRX250 TRX300 TRX350 TRX400 TRX450 etc. For Honda TRX350TE rancher 2000 -2006. For Honda TRX400FW foreman 1995 -2005. The Bfo DIXQ6G is in new condition...(January 14th, 2022)
• N8gct1 Bfo Carburettor Carb Fit Yamaha Rhino (43.9% similar) Fit for yamaha rhino 660 carburetor 2004 2005 2006 2007 YXR660. For yamaha rhino 660 2004 - 2007 . For yamaha grizzly 600 1998 -2001. For yamaha grizzly 660 2002 -2008. Ignition spark plug CID box 1995 for kodiak for yamaha YFM400FW 4GB-85540-00-00. The Bfo N8GCT1 is in new condition...(January 15th, 2022)