KAWASAKI 16021-009 Throttle Screw Nos

( Manufacturer Part Number: 16021-009 ), ( Part Type: Throttle Screw Stop )

Review KAWASAKI New Oem Throttle Stop Screw Nos

The **Kawasaki 16021-009 Throttle Screw (NOS New Old Stock)** is a meticulously preserved, high-performance component designed for Kawasaki engines, particularly those found in classic and modern outboard motors, ATVs, and small gasoline-powered equipment. This genuine, factory-direct throttle screw is crafted from high-grade steel, ensuring durability and smooth operation over extended periods of use. As a NOS part, it has never been installed or used, maintaining its original condition with no signs of wear, corrosion, or modification, making it an ideal choice for restoration projects or performance upgrades. The screw features precise threading and a polished finish, allowing for seamless integration into the carburetor or throttle body, where it plays a critical role in controlling fuel-air mixture and engine responsiveness. Whether used in a vintage Kawasaki outboard, a lawnmower, or a go-kart, this throttle screw delivers reliable, consistent throttle control, enhancing throttle response and overall engine efficiency. Its compatibility with Kawasaki s engine systems ensures a perfect fit, reducing the risk of leaks or misalignment that can occur with aftermarket alternatives. For enthusiasts seeking authenticity and performance, the **Kawasaki 16021-009 Throttle Screw (NOS)** stands as a testament to Kawasaki s engineering precision, offering a seamless blend of heritage and functionality.

### Pros and Cons of buying a Kawasaki 16021-009 Throttle Screw (NOS)

The Kawasaki 16021-009 is a throttle body screw, often referred to as a "throttle screw" or "throttle stop screw," used in Kawasaki engines (commonly found in dirt bikes like the KX250, KX450, or KR250). Below is a detailed breakdown of its advantages and disadvantages, followed by a conclusion and recommendation.

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### **Pros of buying a Kawasaki 16021-009 Throttle Screw (NOS)**

1. **Original Equipment Quality (OEM)**

The "NOS" (New Old Stock) designation means this part is either brand new or gently used but in excellent condition, sourced from a reputable supplier. Kawasaki parts are known for durability and reliability, ensuring a tight fit and consistent performance.

2. **Precision Engineering**

Kawasaki throttle screws are designed to work seamlessly with their engines. They are often machined to exact specifications, reducing the risk of leaks or improper function compared to aftermarket alternatives that may not match perfectly.

3. **Reliability and Longevity**

Since this is an OEM part, it is built to last. Throttle screws are critical components that affect throttle response and engine performance, so a high-quality part reduces the likelihood of failure over time.

4. **Compatibility**

The 16021-009 is specifically designed for Kawasaki engines, ensuring it fits without modification. This eliminates the guesswork that comes with aftermarket parts that might require adjustments or additional tools to install correctly.

5. **Ease of Installation**

Being an OEM part, it is straightforward to install, especially if you are familiar with motorcycle maintenance. The design is optimized for Kawasaki s throttle bodies, reducing the chance of installation errors.

6. **Support and Warranty (If Purchased from a Reputable Source)**

Some NOS suppliers offer warranties or guarantees, providing peace of mind in case of defects. This is less common with aftermarket parts, which often come with limited or no support.

7. **Performance Consistency**

Since it is a genuine Kawasaki part, it will perform as intended by the manufacturer. Aftermarket throttle screws may vary in quality, leading to inconsistent throttle response or potential issues like sticking.

8. **Resale Value**

If you ever decide to sell your bike or upgrade parts, having OEM components can make the bike more appealing to buyers who prefer authenticity.

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### **Cons of buying a Kawasaki 16021-009 Throttle Screw (NOS)**

1. **Cost**

NOS parts are generally more expensive than aftermarket alternatives. While the price reflects quality, it may not be cost-effective for riders on a tight budget or those who prioritize performance over originality.

2. **Limited Availability**

Depending on the supplier, NOS parts may not always be in stock. Aftermarket parts are often more readily available, with multiple brands and suppliers competing for market share.

3. **Potential for Counterfeit NOS Parts**

The NOS market can be flooded with counterfeit or reconditioned parts that are mislabeled as "new." Buyers must research suppliers carefully to ensure they are getting a genuine, high-quality part.

4. **Overkill for Minor Adjustments**

If you are only making minor throttle response tweaks (e.g., slight adjustments for better idle or revving), an aftermarket throttle screw or even a simple throttle stop screw might suffice. Buying an OEM part for such minor changes could be unnecessary.

5. **No Customization Options**

Unlike aftermarket parts, OEM throttle screws do not offer customization (e.g., different materials, coatings, or adjustments for specific riding styles). If you want to experiment with throttle response, aftermarket options may provide more flexibility.

6. **Potential for Excessive Wear in Older Engines**

If the rest of the engine is worn out (e.g., throttle body, carburetor, or linkages), replacing just the throttle screw may not fully resolve performance issues. A more comprehensive rebuild might be needed.

7. **Environmental and Ethical Concerns**

Some NOS parts come from salvaged bikes, raising ethical questions about sourcing. While this is not unique to NOS parts, it is worth considering if sustainability is a priority.

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### **Conclusion**

The Kawasaki 16021-009 throttle screw (NOS) is an excellent choice for riders who prioritize reliability, compatibility, and long-term performance. Its OEM status ensures a tight fit, consistent function, and durability, making it ideal for those who want to maintain their bike s original integrity or restore a classic model. However, the higher cost and potential availability issues may deter budget-conscious riders or those seeking customization.

For riders who are primarily concerned with performance tweaks or have a limited budget, aftermarket throttle screws or simpler adjustments might be more practical. That said, if you value authenticity, ease of installation, and the assurance of a high-quality part, the Kawasaki NOS throttle screw is a strong recommendation.

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### **Recommendation**

- You are restoring or maintaining a Kawasaki bike and want OEM parts for authenticity.

- You prioritize reliability and long-term performance over cost savings.

- You are replacing a worn-out or damaged throttle screw and want a part that fits perfectly without modification.

- You trust the supplier to provide a genuine NOS part (avoid unknown sellers to prevent counterfeit purchases).

- You are on a tight budget and only need minor throttle adjustments.

- You want customization options (e.g., different materials or performance enhancements).

- You cannot find the NOS part easily or are willing to take the risk of counterfeit items.

Ultimately, the best choice depends on your priorities whether that s sticking to original equipment for reliability or exploring aftermarket options for flexibility and cost savings. Always research suppliers thoroughly and consider the overall condition of your bike before making a decision.

Details:

Items are shipped using USPS, UPS, and FedEx. Throttle Stop Screw is new and in excellent condition, not original packaging. If the original package is included it may show signs of wear. Pictures: Thumbnails.

New OEM Kawasaki 16021-009 Throttle Stop Screw NOS. All parts are in stock and ready to ship.

part #: 16021009 prices

• $7.99-$24.99

specifications intakefuelmotorcycle:

• for makes: Kawasaki
• mpn: 16021-009
• part type: Throttle Screw Stop

shipping intakefuelmotorcycle:

• type: Calculated
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air
• carrier: USPS, UPS
• transit: 4-9 Days
• class: Standard, Expedited, One-day
• cost: $0.00

returns intakefuelmotorcycle:

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

payments intakefuelmotorcycle:

• other
• credit card: Mastercard
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general intakefuelmotorcycle:

• condition: New other see details
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

offer intakefuelmotorcycle:

• started: February 28, 2026
• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 2

seller intakefuelmotorcycle:

• # reviews: 128489
• city: Ashaway, Rhode Island
• rating: 99.9%

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