DENSO W24ES-U Nos Nippon Spark Plugs

( Brand: Denso ), ( Manufacturer Part Number: W24ES-U ), ( Type: Spark Plug ), ( Machine Type: Off-road Motorcycle ), ( Vintage Part: Yes ), ( Country Of Origin: Japan ), ( Fuel Type: Gasoline )

Review DENSO Lot Of Nos New Nippon Kawasaki Spark Plugs The Hot Japan Look

The **DENSO W24ES-U (NOS) Spark Plug** is a high-performance, original equipment-grade ignition component meticulously engineered for **Nippon Kawasaki** engines, ensuring peak combustion efficiency and long-term reliability. Designed with DENSO s signature precision, this **single-core, fine-wire plug** features a **14mm thread diameter** and a **19mm shell diameter**, perfectly matching the factory specifications for Kawasaki s high-revving, fuel-injected applications, including popular models like the **Z1000, Ninja 650, or Versys 650**. Crafted from **high-quality nickel alloy**, the electrode delivers exceptional resistance to corrosion, heat, and electrical erosion, maintaining consistent spark performance even under extreme operating conditions. The **iridium-tipped center electrode** (0.6mm in diameter) provides a concentrated, ultra-fine spark that maximizes fuel efficiency and minimizes carbon buildup, while the **ground electrode s angled design** promotes cleaner combustion and reduces pre-ignition risks. This **new old stock (NOS) plug** is sealed in an **original DENSO packaging**, ensuring it remains free from contamination and fully functional, just as it was when first produced. Ideal for both **restoration projects** and **high-mileage performance builds**, the W24ES-U exemplifies DENSO s commitment to durability and performance, offering a seamless replacement for stock plugs while enhancing throttle response, power delivery, and engine longevity. Whether used in a **street bike, track day setup, or classic restoration**, this plug delivers the precision and reliability expected from a true OEM-grade component.

### Pros and Cons of Buying Denso W24ES-U (NOS) Spark Plugs (Nippon Kawasaki Specifications)

1. **High-Quality Materials** Denso is a well-regarded manufacturer known for using durable materials like platinum and iridium alloys, which extend the lifespan of the plugs compared to standard copper or nickel options.

2. **Precision Engineering** These plugs are designed to meet or exceed OEM specifications, ensuring proper gap settings and heat range for optimal performance, especially in high-performance or turbocharged engines like those in Kawasaki vehicles.

3. **Long Service Life** The platinum tip reduces electrode wear, meaning they last significantly longer than traditional spark plugs, reducing maintenance frequency.

4. **Reliable Ignition** The fine wire design provides a strong, consistent spark, improving cold starts and overall engine efficiency.

5. **Compatibility with NOS (Nitrous Oxide Systems)** Since these plugs are specified for Kawasaki engines (often used in performance applications), they are built to handle the increased stress from nitrous oxide use, which can cause higher combustion temperatures.

6. **Reduced Fouling** The platinum tip resists fouling better than copper or nickel plugs, which is beneficial in engines running on high-octane fuels or with aftermarket modifications.

7. **Brand Reputation** Denso is trusted in both OEM and aftermarket circles, ensuring consistent quality and availability of replacements.

1. **Higher Cost** Compared to standard copper or nickel spark plugs, Denso s platinum- or iridium-tipped plugs are more expensive upfront.

2. **Potential Overkill for Stock Engines** If the engine is not modified or used aggressively, these plugs may outlast their necessity, making them a less cost-effective choice for stock applications.

3. **Installation Sensitivity** Improper installation (e.g., incorrect torque or cross-threading) can damage the delicate platinum tip, voiding warranty benefits or causing premature failure.

4. **Limited Availability of Replacement Parts** While Denso plugs are widely available, some specialty or older models may require sourcing from specific retailers.

5. **Not Ideal for High-Mileage or Severely Fouled Engines** If an engine has significant carbon buildup or oil fouling, these plugs may not perform as well as copper plugs, which can sometimes "burn off" deposits more effectively.

6. **Gap Adjustment Requirement** Unlike some universal plugs, these must be gapped precisely to the manufacturer s specification (typically 0.020" 0.024" for Kawasaki engines), which requires attention to detail.

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The **Denso W24ES-U (NOS) spark plugs** are an excellent choice for Kawasaki engines, particularly those in performance or nitrous-oxide applications. Their durability, reliability, and compatibility with high-stress conditions make them a strong investment for enthusiasts or those running modified engines. However, for stock or lightly used vehicles, the higher cost may not justify the extended lifespan. If proper installation and maintenance are ensured, these plugs will provide consistent performance and longevity.

- You own a Kawasaki vehicle (especially a performance or turbocharged model).

- You use nitrous oxide or run high-performance modifications.

- You prioritize long-term reliability and reduced maintenance.

- You are willing to pay a premium for high-quality components.

- Your engine is stock or lightly modified, and you want a more budget-friendly option.

- You frequently encounter fouling issues and prefer plugs that can "self-clean" more easily.

- You are unsure about proper installation or gap settings.

For most Kawasaki owners running stock or mildly modified engines, these plugs are a **strong recommendation** due to their balance of performance and longevity. Always follow manufacturer gap and torque specifications to maximize their effectiveness.

Details:

Made in Japan. I ship to USA addresses only. Add them all to your collection. Winner to pay $8.95 for USPS Ground Advantage shipping.

These spark plugs are all in new condition.Sold as seen the photos and ready to use. Hello, you are buying on a LOT of 4 NOS New Nippon Denso Kawasaki Spark Plugs W24ES-U.

part #: w24es prices

• $8.50-$45.99

specifications cyclesparkplugs:

• for makes: Kawasaki
• brand: Denso
• mpn: W24es-u
• type: Spark Plug
• machine type: Off-road Motorcycle
• vintage part: Yes
• country of origin: Japan
• fuel type: Gasoline

shipping cyclesparkplugs:

• carrier: USPS
• type: Fixed
• transit: 4-9 Days
• service: USPS Ground Advantage
• cost: $8.95
• class: Standard

returns cyclesparkplugs:

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

offer cyclesparkplugs:

• quantity: 1
• started: February 21, 2026
• sold: 0
• availability: In Stock
• options: Ship-to-home

payments cyclesparkplugs:

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

seller cyclesparkplugs:

• city: Arlington, Washington
• # reviews: 8006
• rating: 100.0%

general cyclesparkplugs:

• condition: New other see details
• Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Spark Plugs

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