NGK R4339-8 Nos Spark Pack Plug Racing

( Brand: Ngk ), ( Manufacturer Part Number: R4339-8 ), ( Type: Spark Plug )

Review NGK Nos New Spark Plugs Pack Motorcycle Plug Racing Competition Real

Detailed Product Description for NGK R4339-8 NOS Spark Plugs Pack (Plug Racing)

The NGK R4339-8 NOS Spark Plugs Pack is an exceptional choice for racing enthusiasts and high-performance vehicles seeking a reliable, efficient, and durable ignition system. These spark plugs are designed to deliver consistent spark energy for optimal engine combustion, ensuring a powerful and smooth driving experience.

Each spark plug in this pack features a V-Power iridium center electrode, which offers superior ignitability and longer lifespan compared to traditional copper or platinum spark plugs. The V-Power electrode is highly resistant to wear and corrosion, ensuring consistent performance even under extreme racing conditions.

The NGK R4339-8 NOS Spark Plugs are designed to fit most racing applications, making them a versatile choice for various racing vehicles. They are equipped with a tapered insulator design and a multi-ground electrode that promotes even heat distribution and reduces spark plug fouling.

These racing spark plugs also come with a copper core insulator and a laser-welded ground electrode. The copper core insulator provides excellent heat conductivity, while the laser-welded ground electrode ensures a stable and strong ground connection for maximum engine performance.

The NGK R4339-8 NOS Spark Plugs Pack comes with a precision-machined porcelain shell that offers excellent resistance to heat and high-temperature shock. This ensures the durability and longevity of the spark plugs, even in the most demanding racing environments.

In summary, the NGK R4339-8 NOS Spark Plugs Pack is an outstanding choice for racing applications, offering superior ignitability, durability, and consistency. Whether you're a professional racecar driver or a DIY enthusiast, these spark plugs will provide the reliable performance you need to take your racing game to the next level.

The NGK R4339-8 NO S Spark Plugs Pack (Racing) are designed for high-performance applications, offering a balance between power, durability, and reliability. Here are some pros and cons to consider:

1. High heat range: Suitable for high-output engines, as they can withstand higher combustion temperatures.

2. Improved ignitability: The Iridium tip allows for faster and more efficient ignition, potentially enhancing engine performance.

3. Longer lifespan: Iridium tips are more durable than traditional copper or platinum spark plugs, reducing the need for frequent replacements.

4. Superior heat transfer: The ground electrode design promotes faster heat dissipation, preventing pre-ignition and detonation.

1. Higher cost: Iridium spark plugs tend to be more expensive than their copper or platinum counterparts.

2. Narrow application range: These spark plugs are specifically designed for higher-performance engines, so they may not be compatible with all engine types.

3. Requires precise installation: Improper gap setting or installation can negatively impact performance and potentially damage the engine.

If you're looking to improve the performance of your high-output engine, the NGK R4339-8 NO S Spark Plugs Pack (Racing) may be an excellent choice. However, it's crucial to ensure compatibility with your engine and to follow proper installation procedures to maximize their benefits. If the cost seems prohibitive, you may want to consider cheaper options for standard or moderately-performing engines.

Details:

Again, this listing is for 1 pack of quantity 4 plugs. Only removed from the boxes to verify condition which is excellent. Please see the photos as they do a good job of showing condition.

part #: r43398 prices

• $8.55-$29.95

specifications cyclesparkplugs:

• brand: Ngk
• mpn: R4339-8
• type: Spark Plug

shipping cyclesparkplugs:

• service: USPS Ground Advantage
• cost: $11.00
• type: Calculated
• carrier: USPS
• transit: 3-8 Days
• class: Standard

returns cyclesparkplugs:

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

seller cyclesparkplugs:

• rating: 100.0%
• # reviews: 690
• city: Auburn, Georgia

payments cyclesparkplugs:

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

offer cyclesparkplugs:

• availability: In Stock
• quantity: 1
• sold: 0
• options: Ship-to-home
• started: December 8, 2025

general cyclesparkplugs:

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

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