Does your Yamaha YZ450F sputter, hesitate, or just refuse to run right, even after you’ve cleaned the carburetor? That frustrating lack of power can turn a great ride into a major headache. Many riders know the drill: the carburetor needs more than just a simple spray-down to truly perform like new, especially on these high-performance machines.
Choosing the right rebuild kit adds another layer of confusion. You face a flood of aftermarket parts, wondering which ones fit perfectly and will actually last. Using the wrong needle or float valve can lead to leaks, poor fuel mixture, and wasted money. You need reliable components that restore that crisp throttle response you remember.
This guide cuts through the noise. We will show you exactly what to look for in a top-quality YZ450F carb rebuild kit. You will learn about essential components, common pitfalls to avoid, and how to select a kit that brings your bike back to peak performance. Get ready to stop guessing and start riding with confidence!
Top Rebuild Kit For Yz450F Carb Recommendations
- Fit for Honda CRF250R 2004-2009 2012-2017, CRF250X 2004-2009 2012-2017V, TRX450R 2006-2009, TRX450ER 2006-2009 2012-2014, CRF450R 2002-2008, CRF450X 2005-2014V
- Fit for Suzuki DRZ400, RMZ250 2004-2009, RMZ450 2005-2007
- Fit for Kawasaki KX250F 2004-2010, KLX 450R 2008-2009, KX450F 2006-2009
- Fit for Yamaha YZ250F 2001-2013, YZ426F 2000-2002, YZ450F 2003-2009, YFZ450 2004-2009, WR400F 2000, WR450F 2003-2011V, WR250F 2001-2009 2011-2013, WR426F 2001-2002
- Package includes: 1x Carburetor Repair Kit
- Compatible: The carburetor repair rebuild kit compatible with Yamaha YZ250F 2001-2013, WR250F 2001-2009 2011-2013, WR426F 2001-2002, YZ426F 2000-2002, WR400F 2000, YFZ450 2004-2009, YZ450F 2003-2009, WR450F 2003-2011V
- Compatible: The carburetor repair rebuild kit compatible with Honda CRF250R 2004-2009, CRF250R 2012-2017, CRF250X 2004-2009, CRF250X 2012-2017, TRX450R 2006-2009, TRX450ER 2006-2009, TRX450ER 2012-2014, CRF450R 2002-2008, CRF450X 2005-2014
- Compatible: The carburetor repair rebuild kit compatible with Kawasaki KX250F 2004-2010, KLX 450R 2008-2009, KX450F 2006-2009
- Compatible: The carburetor repair rebuild kit compatible with Suzuki DRZ400 2004-2009, RMZ250 2004-2009, RMZ450 2005-2007
- Easy to Install: The carburetor repair rebuild kit is convenient to install, you can direct replacement and mounts
- 【Replace Part Numbers】18-5142, 18-7968, 7261512, CRY-42015, 5TG-14101-31-00
- 【Fitment】Fit for Honda CRF250R (2004-2009 2012-2017), CRF250X (2004-2009 2012-2017), TRX450R (2006-2009), TRX450ER (2006-2009 2012-2014), CRF450R (2002-2008), CRF450X (2005-2014)
- 【Compatible】Fit for Yamaha YZ250F (2001-2013), YZ426F (2000-2002), YZ450F (2003-2009), YFZ450 (2004-2009), WR400F (2000), WR450F (2003-2011), WR250F (2001-2009 2011-2013), WR426F (2001-2002)
- 【Note】Please double-check that the part number,photo and size match before purchasing,make sure whether it fit the part you want
- 【Detailed Parameters】If you have any questions about the product size, please do not hesitate to contact us, we will reply immediately after receiving the information!
- Fitment: Carburetor Carb 1 Pc Rebuild Kit Replacement for Yamaha YZ250F 2003-2013, YZ450F 2003-2009, YFZ450 2004-2009, YZ426F 2000-2002. Replacement for Suzuki RMZ250 2004-2009, RMZ450 2005-2007. Replacement for Honda CRF150R 2007-2009, CRF150RB 2007-2009, TRX450ER 2006-2009 2011-2014, TRX450R 2006-2009 2012, CRF250R 2004-2009 2012-2017, CRF250X 2004-2009 2012-2017, CRF450R 2002-2008, CRF450X 2005-2014. Replacement for Kawasaki KX250F 2004-2010, KLX 450R 2008-2009, KX450F 2006-2009
- Part number: 18-5142 7261512 CRY-42015 5TG-14101-31-00 18-7968
- Installation: Turn off the power, clean the dirt, remove the problematic parts, install them separately and pay attention to their position and sealing, start the vehicle and check its operation.
- Package include: 1 Pc Carburetor Rebuild Kit as picture shows
- Feature: This product is easy to install, and can be completed with basic tools such as screwdrivers and tweezers.
- Fit type: Replacement for Yamaha YZ250F 2003-2013 YZ450F 2003-2009 YFZ450 2004-2009 YZ426F 2000-2002. Replacement for KTM 450EXC 2006-2010 450SX/SX-F 2006-2010 450XC/XC-W 2006-2010 525EXC 2006-2007 525XC/XC-W 2006-2008 530EXC 2008-2010. Replacement for Suzuki RMZ250 2004-2009 RMZ450 2005-2007. Replacement for Kawasaki KX250F 2004-2010 KLX 450R 2008-2009 KX450F 2006-2009. Replacement for Honda CRF150R 2007-2009 CRF150RB 2007-2009 TRX450ER 2006-2009 2011-2014 TRX450R 2006-2009 2012
- Package Included: 1 Set Carburetor Rebuild Kit
- High quality material: Rubber has good flexibility and aging resistance. Effectively prevent hardening and cracking.
- Function: The kit provides a wide range of components that are well adapted to the original carburetor for maintenance and adjustment. Installation can be easily completed without complex modifications.
- Note: Please confirm the quantity of products and the compatible models. We will provide you with satisfactory after - sales service. If you have any questions, please contact us and we will reply as soon as possible.
- Fit for Yamaha YZ250F 2001-2013 carburetor rebuild kit.
- Fit for Yamaha YZ400F 1998-1999 carburetor rebuild kit.
- Fit for Yamaha YZ426F 2000-2002 carburetor rebuild kit.
- Fit for Yamaha YZ450F 2003-2009 carburetor rebuild kit.
- Fit for Yamaha YFZ450 2004-2009 carburetor rebuild kit.
- Kits include all of the necessary components to repair a carburetor; Atv models with two carburetors include components to repair two carburetors
- Kit includes all O-rings, gaskets, jets, needle, mixture screw, float bowl screws, float valve needle and seat; Oem jet sizes are included in the kit
- Nbr rubber material is used on all O-rings and rubber gaskets nbr has excellent resistance to the ethanol used in today's fuels
- Components included in the kits are based off of us models and discretion must be used when attempting to install the kit on a non us model
- Applications that use paper float bowl gaskets are upgraded to high performance interface gasket material; Off road use only
- COMPATIBILITY: Compatible with HONDA [2004-2009, 2012-2017] CRF250R [2004-2009, 2012-2017] CRF250X [2006-2009] TRX450R [2006-2009, 2012-2014] TRX450ER [2003-2006] CRF450R [2005-2007] CRF450X.
- COMPATIBILITY: Compatible with YAMAHA [2001-2013] YZ250F [2000-2002] YZ426F [1998-1999] YZ400F [2003-2009] YZ450F [2004-2009] YFZ450 [2000] WR400F[2003-2011] WR450F [2001-2009, 2011-2013] WR250F [2001-2002] WR426F.
- COMPATIBILITY: Compatible with SUZUKI [2004-2009] RMZ250 [2005-2007] RMZ450; Compatible with Kawasaki [2004-2010] KX250F [2008-2009] KLX 450R [2006-2009] KX450F; Compatible with KTM [2006-2010] 450SX SMF [2002-2007] 400XCW [2007-2009] 505SXF XCF [2003-2011] 530EXC [2004-2005] 450EXC [2006-2009] 450XC-F [2004-2012] 450SXF [2004-400EXC.
- OE NUMBER: Replace 16021-MEB-771.
- SATISFACTION: OXCANO ensures brand new and high-quality Carburetor Rebuild Carb Repair Kit. In terms of any problem with this product, please contact us, our friendly assistants will always be available to help you within 24 hours.
Your Essential Buying Guide for a YZ450F Carb Rebuild Kit
Your Yamaha YZ450F is a powerful machine, but a sputtering or leaking carburetor can stop your ride fast. A good rebuild kit brings your carburetor back to life! This guide helps you pick the best one for your needs.
Key Features to Look For
When shopping, look for specific parts that matter most. These components determine how well your carburetor seals and performs.
1. Complete Gasket Set
- What it is: This includes all the paper and rubber seals needed to put the carb back together without leaks.
- Why it matters: A full set ensures you replace every worn-out seal. Don’t settle for kits missing a critical float bowl gasket.
2. New Needle and Seat
- What it is: The needle controls the fuel flow into the float bowl. The seat holds the needle.
- Why it matters: A worn needle causes flooding (too much fuel) or starving (not enough fuel). New ones ensure precise fuel metering.
3. Float Valve Assembly
- This part regulates the fuel level in the bowl. Make sure the new one matches your stock specifications exactly.
4. Jet Assortment (Optional but Recommended)
- Some kits include extra jets. These allow you to tune your bike for different weather or riding heights.
Important Materials That Matter
The materials used in the kit directly affect how long it lasts. Cheap materials fail quickly under harsh fuel conditions.
Viton vs. Standard Rubber
Most gaskets are rubber or synthetic. Look specifically for **Viton** (FKM) rubber seals, especially for the float bowl and O-rings. Viton resists the harsh ethanol found in modern gasoline much better than standard Buna-N rubber. Viton parts last longer and prevent leaks down the road.
Metal Components Quality
Check the quality of the needle and any metal clips. They should be made of corrosion-resistant metal. Rust on the needle will quickly ruin its sealing ability.
Factors That Improve or Reduce Quality
What makes one kit better than another? It often comes down to precision and compatibility.
Quality Boosters:
- OEM Match: Kits specifically designed to match Yamaha’s original equipment manufacturer (OEM) specs perform best.
- Reputable Brand: Established aftermarket brands often use better quality control.
Quality Reducers:
- Universal Fit Claims: Be wary of “universal” kits. Carburetors are very precise; a slight mismatch in size causes big problems.
- Missing Components: If the kit seems too cheap and is missing the float valve or main O-rings, it forces you to reuse old, worn parts.
User Experience and Use Cases
Who needs this kit, and what will they feel?
Use Cases:
- Preventative Maintenance: If your bike is old or sits for long periods, rebuild the carb before problems start.
- Fixing Leaks: A leaking float bowl gasket is a common issue that a rebuild kit easily solves.
- Performance Tuning: If you changed your exhaust or air filter, a kit with extra jets lets you dial in the perfect fuel mixture for better throttle response.
Users generally report a smoother idle, easier starting, and consistent power delivery after installing a high-quality kit. A bad installation, however, leads to frustration, so take your time and follow good service manuals.
10 Frequently Asked Questions (FAQ) About YZ450F Carb Rebuild Kits
Q: How often should I rebuild my YZ450F carburetor?
A: If you ride frequently (weekly), you might go several years. If the bike sits or you use old fuel, rebuild every 1-2 years or immediately if performance drops.
Q: Will this kit fit my specific YZ450F year?
A: Carburetor designs change slightly between model years. Always verify the kit description matches your exact year and model (e.g., 2006 YZ450F vs. 2018 YZ450F).
Q: What is the hardest part of the rebuild process?
A: Setting the float height correctly is usually the trickiest part. Take precise measurements before you remove the old float assembly.
Q: Do I need special tools for installation?
A: You need basic metric wrenches and screwdrivers. A small pair of needle-nose pliers helps with small O-rings. A service manual is highly recommended.
Q: Can I use a rebuild kit if my main jet is damaged?
A: Most standard kits only include the gaskets and O-rings. Check the product listing; if it mentions “complete overhaul,” it likely includes replacement jets.
Q: What does “Ethanol resistance” mean for my kit?
A: Ethanol in gasoline eats away at cheap rubber. Ethanol-resistant materials like Viton ensure your new seals do not swell or crack quickly.
Q: My bike still runs poorly after installing the kit. What now?
A: Recheck the float height setting. Also, confirm that you did not accidentally pinch any O-rings during reassembly. Fuel delivery issues often come down to float level.
Q: Is it cheaper to buy a kit or buy individual parts?
A: Buying a well-matched kit is almost always cheaper and easier than sourcing every single gasket and seal separately.
Q: What is the benefit of buying an OEM-spec kit over a cheap generic one?
A: OEM-spec kits guarantee the correct size and material hardness, leading to a perfect seal the first time. Cheap kits often use softer rubber that fails sooner.
Q: Do I need to clean the carburetor body before installing the new parts?
A: Absolutely! You must thoroughly clean all passages and jets with carburetor cleaner before installing the new kit components. New seals on a dirty body will not fix performance issues.
Melody Smith is a passionate writer, outdoor enthusiast, and camping expert based in the Seattle Metropolitan Area. With a deep love for nature and adventure, she shares her personal experiences, tips, and insights on MyCampingPro.com. A seasoned camper and traveler, Melody combines her creative background in design and writing with her love for the great outdoors, offering practical advice and inspiring stories to help others make the most of their outdoor experiences. When she’s not exploring the wilderness, you can find her painting, collecting vintage treasures, or diving into a good book.