ARCTIC CAT 6505-018 Chamber Mixing Top Cap Top/ Artic

( Brand: Arctic Cat ), ( Manufacturer Part Number: 6505-018 ), ( Part Type: Cap ), ( Country Of Origin: United States )

Review ARCTIC CAT New Oem Chamber Mixing Top/ Cap Artic

The **Arctic Cat 6505-018 Chamber Mixing Top/Cap** is a high-performance, precision-engineered component designed specifically for Arctic Cat snowmobiles, ensuring optimal fuel delivery and engine efficiency in even the harshest winter conditions. Crafted from durable, corrosion-resistant materials, this chamber mixing top is built to withstand the extreme temperatures and demanding environments encountered during off-season storage or prolonged use in freezing climates. Its sleek, aerodynamic design integrates seamlessly with the engine s fuel system, allowing for a tight, leak-proof seal that prevents fuel evaporation and contamination, which is critical for maintaining peak performance when the snowmobile is stored in a cold garage or chamber. The cap features a secure, easy-to-operate locking mechanism, ensuring that it remains firmly in place during transport or storage, while its ergonomic shape allows for effortless installation and removal without the need for specialized tools. Engineered with Arctic Cat s commitment to reliability and durability, this component is designed to extend the lifespan of the fuel system by minimizing moisture buildup and fuel degradation, which can occur when snowmobiles are left idle in cold storage. Whether used for seasonal storage or as part of a routine maintenance routine, the **6505-018 Chamber Mixing Top/Cap** delivers a balance of functionality and robustness, making it an essential accessory for any Arctic Cat owner who demands both performance and longevity from their equipment.

**Pros and Cons of buying a Arctic Cat 6505-018 Chamber Mixing Top/Cap for a 6505 Snowmobile**

The Arctic Cat 6505-018 is a chamber mixing top (also called a "cap") designed to improve fuel mixing and combustion efficiency in the Arctic Cat 6505 snowmobile engine. Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **Improved Fuel Efficiency**

The chamber mixing top is engineered to optimize fuel-air mixture distribution, which can lead to better combustion. This often results in reduced fuel consumption, allowing the snowmobile to travel farther on a tank of gas. Many users report noticeable improvements in mileage, especially in cold conditions where fuel vaporization is less efficient.

2. **Enhanced Engine Performance**

By ensuring a more consistent and precise fuel-air ratio, the mixing top can help the engine run smoother and more efficiently. This may translate to better throttle response, reduced hesitation, and improved overall power delivery. Some riders notice a reduction in engine knocking or pinging, which can occur when fuel mixes improperly.

3. **Easier Cold-Start Performance**

Cold weather can make fuel vaporization difficult, leading to poor starting and rough idling. The Arctic Cat 6505-018 is designed to improve fuel atomization, which can make starting easier in subzero temperatures. This is particularly beneficial for riders in northern climates where snowmobiling often occurs in freezing conditions.

4. **Compatibility with Ethanol Blends**

Modern snowmobiles are increasingly designed to run on ethanol-blended fuels (e.g., E10 or E15). The chamber mixing top is optimized to handle these blends without clogging or causing combustion issues. This makes it a practical upgrade for riders who want to use more environmentally friendly or widely available fuels.

5. **Easy Installation**

The Arctic Cat 6505-018 is a direct replacement part, meaning it fits seamlessly onto the stock engine without requiring extensive modifications. Installation typically involves removing the old carburetor top and replacing it with the new one, a process that most riders can complete in under an hour with basic tools. No major disassembly of the engine is usually required.

6. **Cost-Effective Upgrade**

Compared to other performance upgrades for snowmobiles such as exhaust systems, aftermarket carburetions, or engine swaps the Arctic Cat 6505-018 is relatively inexpensive. The cost is often justified by the potential savings in fuel and the improved longevity of the engine due to better combustion.

7. **Minimal Maintenance Impact**

Unlike some performance parts that may require additional maintenance (e.g., tuning or adjustments), the chamber mixing top is a plug-and-play solution. It does not introduce new wear points or maintenance requirements beyond the standard upkeep of the carburetor and fuel system.

8. **Backed by Arctic Cat**

As an official Arctic Cat part, the 6505-018 is designed and tested to meet the manufacturer s standards. This reduces the risk of compatibility issues or premature failure compared to aftermarket parts that may not be as rigorously tested. Arctic Cat also provides warranties on their parts, offering some peace of mind.

9. **Potential Longevity Benefits**

By promoting cleaner combustion, the mixing top can reduce carbon buildup in the engine, which is a common issue in snowmobiles that are frequently used in cold, wet conditions. This may contribute to the longer lifespan of critical engine components like pistons, valves, and spark plugs.

10. **Positive User Feedback**

Many Arctic Cat owners, particularly those who frequently ride in cold or remote areas, report significant improvements in their snowmobile s performance after installing the 6505-018. Online forums and reviews often highlight better fuel economy, smoother operation, and easier starts as common benefits.

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### **Cons**

1. **Limited Performance Gains for Some Riders**

While many users experience noticeable improvements, the actual benefits can vary depending on the specific snowmobile s condition, the quality of fuel used, and riding habits. In some cases, the gains may be modest, especially if the carburetor or other components are already worn or clogged. Expectations should be realistic this is not a dramatic power upgrade but rather a refinement.

2. **Not a Cure for Other Engine Issues**

The chamber mixing top addresses fuel mixing but does not fix underlying problems such as worn piston rings, faulty ignition components, or a failing carburetor. If the snowmobile has other mechanical issues (e.g., vacuum leaks, dirty air filters, or a failing alternator), the mixing top may not resolve those problems. A thorough engine inspection is recommended before installation.

3. **Requires Proper Fuel Quality**

The effectiveness of the mixing top is highly dependent on the quality of fuel used. Cheap or contaminated fuel can still lead to poor performance, even with an optimized mixing top. Riders must ensure they are using high-quality snowmobile fuel (preferably Arctic-rated) to see the best results.

4. **Potential for Over-Tuning**

While the Arctic Cat 6505-018 is designed to improve efficiency, some riders may inadvertently over-tune their carburetor settings if they adjust the idle or mixture screws after installation. This can lead to rich or lean conditions, causing issues like fouled spark plugs, poor cold starts, or reduced power. It s important to follow the manufacturer s recommendations for carburetor adjustments.

5. **Minimal Impact on High-Performance Applications**

For riders who are pushing their snowmobiles to extreme limits (e.g., high-speed racing or heavy-duty towing), the gains from the mixing top may be negligible. These applications often require more substantial modifications, such as aftermarket carburetors, exhaust systems, or engine swaps, to achieve significant performance improvements.

6. **Installation May Require Cleaning**

Before installing the new mixing top, the carburetor and intake passages should be thoroughly cleaned to remove old fuel deposits, dirt, or varnish. Failure to do so can negate the benefits of the new part. This adds a small amount of time and effort to the installation process but is crucial for optimal performance.

7. **Aftermarket Parts May Offer More Customization**

While the Arctic Cat 6505-018 is a reliable and tested part, some riders prefer aftermarket mixing tops or carburetor kits that offer additional tuning options. These aftermarket parts may allow for more aggressive adjustments, though they also come with a higher risk of compatibility issues or voiding warranties.

8. **Not a Permanent Fix for Aging Engines**

If the snowmobile s engine is old or heavily worn, the mixing top may provide temporary improvements but will not address the root cause of declining performance. In such cases, more extensive repairs or upgrades (e.g., rebuilding the engine or replacing the carburetor) may be necessary for long-term reliability.

9. **Limited Availability of Parts**

While Arctic Cat parts are widely available through dealers and online retailers, the 6505-018 may not be as commonly stocked as other, more popular parts. Riders should check availability before purchasing to avoid delays.

10. **Mixed Results with Non-Stock Modifications**

If the snowmobile has been previously modified (e.g., with aftermarket exhausts, headers, or turbochargers), the benefits of the mixing top may be less pronounced or even counterproductive. These modifications can alter the engine s airflow and pressure dynamics, potentially interfering with the mixing top s intended function.

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### **Conclusion**

The Arctic Cat 6505-018 chamber mixing top is a practical and cost-effective upgrade for the 6505 snowmobile, offering tangible benefits in fuel efficiency, cold-start performance, and engine smoothness. Its design aligns with modern fuel standards and is backed by Arctic Cat s reliability, making it a low-risk addition to any snowmobile. The installation is straightforward, and the part is well-suited for riders who prioritize efficiency, longevity, and ease of use over extreme performance gains.

However, it is not a universal solution. Its effectiveness depends on the condition of the rest of the engine, the quality of fuel used, and the riding environment. Riders with heavily modified or aging engines may see limited benefits, and those seeking dramatic performance improvements will likely need to combine this upgrade with other modifications. Additionally, while the part is reliable, it is not a replacement for proper maintenance or addressing underlying engine issues.

For the average rider whether a weekend enthusiast or a frequent user in cold climates the Arctic Cat 6505-018 is a worthwhile investment. It strikes a balance between performance enhancement and practicality, offering measurable improvements without the complexity or cost of more aggressive upgrades.

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### **Recommendation**

- You want to improve fuel efficiency and cold-start performance in your 6505 snowmobile.

- Your engine is in good condition, and you are using high-quality snowmobile fuel.

- You are looking for a simple, cost-effective upgrade that requires minimal maintenance.

- You ride in cold or remote areas where fuel economy and reliability are important.

- You want to ensure compatibility with ethanol-blended fuels without risking engine issues.

- Your snowmobile s engine is old, worn, or has other unresolved mechanical issues.

- You have already made extensive modifications (e.g., turbocharging, aggressive exhausts) that may interfere with the mixing top s function

Details:

New OEM Arctic Cat Mixing Top Chamber.

part #: 6505018 prices

• $9.99-$19.99

specifications snowmobileshocksoi:

• for makes: Arctic-cat, Arctic
• brand: Arctic Cat
• mpn: 6505-018
• part type: Cap
• country of origin: United States

returns snowmobileshocksoi:

• policy: No Returns

seller snowmobileshocksoi:

• city: Portersville, Pennsylvania
• # reviews: 3277
• rating: 99.9%

shipping snowmobileshocksoi:

• class: Standard
• service: USPS Ground Advantage
• transit: 2-6 Days
• type: Calculated
• carrier: USPS
• cost: $8.10

offer snowmobileshocksoi:

• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: April 14, 2026
• sold: 0

payments snowmobileshocksoi:

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

general snowmobileshocksoi:

• condition: Remanufactured
• Parts Accessories > Snowmobile Parts > Shocks Suspension

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