V-TWIN 35-8012 Intake Manifold Coupling Kit

( Brand: V-twin ), ( Manufacturer Part Number: 35-8012 ), ( Part Type: Intake Manifold ), ( Color: Metallic ), ( Exterior Finish: Metallic Finish ), ( Package Dimensions Lxwxh: 7.0x6.0x2.0 Inches ), ( Weight: 0.55 Pounds )

Review V TWIN Intake Manifold Coupling Kit

The **V-Twin 35-8012 Intake Manifold Coupling Kit** is a precision-engineered aftermarket solution designed to enhance performance, reliability, and airflow efficiency in modern V-twin engines, particularly those found in popular cruisers, sportbikes, and adventure motorcycles. This meticulously crafted kit is tailored to address common issues associated with stock intake manifold couplings, such as leaks, poor sealing, or excessive vibration, which can degrade throttle response, fuel economy, and overall engine performance. Constructed from high-grade materials, including durable rubber compounds and reinforced metal components, the kit ensures a secure, vibration-dampening connection between the intake manifold and the throttle body or airbox, minimizing flex and reducing the risk of internal damage over time. The design incorporates a snug, interference-fit coupling that maintains optimal alignment, preventing misalignment-induced wear on gaskets, seals, and internal engine components. Ideal for applications where stock couplings fail to provide adequate support such as high-revving engines, aggressive riding styles, or modified setups with aftermarket air filters or throttle bodies the 35-8012 kit is engineered to withstand the demands of both daily riding and spirited performance. Whether installed on a stock engine or as part of a more extensive intake upgrade, this coupling kit delivers a seamless, leak-free interface that preserves factory performance while reducing the likelihood of costly repairs down the line. Backed by V-Twin s reputation for quality and compatibility, this kit is a straightforward yet impactful modification for riders seeking to optimize their engine s breathing and longevity.

The **Yamaha V-Twin 35-8012 Intake Manifold Coupling Kit** is designed to replace the stock intake manifold coupling on certain Yamaha V-Star models (such as the 2010 2016 V-Star 650 and 2011 2016 V-Star 950). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the 35-8012 Intake Manifold Coupling Kit**

1. **Improved Airflow and Performance**

The kit replaces the restrictive stock coupling with a more open design, allowing for better airflow into the engine. This can lead to slight improvements in throttle response, especially in mid-range RPMs, and may enhance overall power delivery. Some riders report a noticeable difference in smoothness and acceleration.

2. **Easier Installation**

The kit is designed to be a direct drop-in replacement, requiring minimal modification to the stock intake system. It typically involves removing the old coupling, cleaning the mating surfaces, and installing the new parts no welding or major fabrication is usually required.

3. **Compatibility with Aftermarket Intakes**

If you plan to install an aftermarket intake (e.g., a full-length or partial intake), this coupling kit is often a necessary component to ensure proper sealing and airflow. It bridges the gap between the stock throttle body and the aftermarket intake, making such upgrades more straightforward.

4. **Durability and Quality Materials**

The kit is made from high-quality materials, including aluminum or reinforced plastic, which are designed to withstand the heat and stress of the engine bay. The gaskets are typically high-temperature resistant, reducing the risk of leaks over time.

5. **Cost-Effective Modification**

Compared to more extensive engine modifications (e.g., porting the intake manifold or installing a full custom intake), this kit is relatively inexpensive. It offers a low-risk way to improve airflow without significant investment.

6. **Potential for Better Fuel Economy**

In some cases, improved airflow can lead to more efficient combustion, which may slightly enhance fuel economy, though this is subjective and depends on riding style and other factors.

7. **Aesthetic Appeal**

The kit often includes a cleaner, more modern-looking coupling that may improve the bike s appearance, especially if paired with an aftermarket intake.

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### **Cons of the 35-8012 Intake Manifold Coupling Kit**

1. **Mixed Performance Gains**

While some riders notice a tangible improvement in throttle response, others report minimal or negligible differences. The gains are often subtle, especially on stock engines without other modifications. Expectations should be realistic this is not a high-performance upgrade but rather a nuisance fix with minor benefits.

2. **Potential for Leaks**

If not installed correctly, the new coupling kit can develop leaks at the gaskets or seals, especially under heat and vibration. Proper sealing with high-temperature gasket maker is critical to avoid oil or coolant contamination.

3. **Compatibility Issues**

The kit is specific to certain Yamaha models and years. Installing it on an incompatible bike may result in poor fitment, airflow restrictions, or even damage to the throttle body or intake. Always verify compatibility before purchasing.

4. **Limited Impact on High-Performance Bikes**

If your bike already has significant modifications (e.g., a high-flow throttle body, ported manifold, or exhaust), the benefits of this kit may be overshadowed by other limiting factors. It s a minor upgrade in the grand scheme of high-performance tuning.

5. **Requires Additional Modifications for Full Benefits**

To realize the full potential of improved airflow, you may need to pair this kit with an aftermarket intake or throttle body. Without these, the gains are minimal. This adds to the cost and complexity of the project.

6. **Potential for Voiding Warranty**

If your bike is under warranty, installing aftermarket parts like this kit may void the coverage, depending on the manufacturer s policies. Check your warranty terms before proceeding.

7. **Installation Challenges**

While generally straightforward, installation can be tricky for inexperienced riders. Misalignment or improper sealing can lead to leaks or airflow issues. Some riders may need to consult a mechanic or follow detailed guides carefully.

8. **Not a "Set and Forget" Modification**

Over time, the gaskets and seals may degrade, requiring periodic inspection and replacement to maintain performance and prevent leaks.

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### **Conclusion**

The **Yamaha 35-8012 Intake Manifold Coupling Kit** is a practical and relatively low-cost modification that can offer minor improvements in airflow and throttle response, particularly when paired with an aftermarket intake. It is most beneficial for riders looking to enhance their bike s stock performance with minimal effort or those who plan to install an aftermarket intake system. However, the gains are often modest, and the kit is not a high-performance upgrade on its own.

- If you want a simple, cost-effective way to improve airflow and potentially pair with an aftermarket intake, it s a worthwhile consideration.

- If you re seeking significant performance gains, other modifications (e.g., porting, high-flow throttle body, or exhaust) will yield much better results.

- If your bike is already heavily modified, the benefits may be negligible compared to the effort required.

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### **Recommendation**

- You are installing an aftermarket intake and need a compatible coupling.

- You want a minor, low-risk upgrade to improve throttle response and airflow.

- You are comfortable with basic installation and willing to address potential leaks with proper sealing.

- Your bike is not already heavily modified, as the gains will be more noticeable.

- You expect dramatic performance improvements this is a subtle upgrade.

- Your bike is under warranty, as installation may void coverage.

- You lack the time or skill to install it correctly, risking leaks or improper fitment.

- You plan to pursue high-performance tuning, as other modifications will have a far greater impact.

For the average rider looking to enhance their stock or lightly modified Yamaha V-Star, this kit is a **solid, low-risk addition** that can complement other upgrades. However, it should not be seen as a standalone high-performance solution. If you re serious about tuning, prioritize other modifications (e.g., intake, exhaust, or ECU tuning) that offer more substantial returns. Always verify compatibility with your specific model and year before purchasing.

Details:

Fits model's: FXST 1986 -1999, FLST FLT FXR 1986 -1994, FXD 1991 -1999, XL 1988 -2006. V-Twin 35-8012 - Intake Manifold Coupling Kit: Kit. 35-8012, OEM: 27008-83A.

part #: 358012 prices

• $40.04-$51.99

specifications atvhosesfilters:

• brand: V-twin
• mpn: 35-8012
• part type: Intake Manifold
• color: Metallic
• exterior finish: Metallic Finish
• package dimensions lxwxh: 7.0x6.0x2.0 Inches
• weight: 0.55 Pounds

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• type: Fixed
• cost: $0.00

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• started: March 19, 2026

general atvhosesfilters:

• ATV, Side-by-Side UTV Parts Accessories > Air Intake Fuel Delivery > Air Hoses, Lines Pipes
• condition: New other see details

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