NGK SPARK PLUGS NGKUR6IX Ix Iridium Plug 7348

( Brand: Ngk Spark Plugs ), ( Manufacturer Part Number: NGKUR6IX ), ( Part Type: Plug )

Review NGK SPARK PLUGS Ur6ix Ix Iridium Plug

The **NGK Iridium IX UR6IX (Part Number: 7348)** spark plug is a cutting-edge automotive performance component designed to deliver unparalleled ignition efficiency, longevity, and reliability for modern gasoline engines. Engineered with NGK s proprietary **Iridium IX** technology, this plug features a **single, ultra-fine iridium center electrode** measuring just **0.4 mm in diameter**, which is nearly half the size of a standard platinum electrode and a fraction of the thickness of a conventional copper core. This precision engineering ensures a **faster, hotter spark** with a lower ignition voltage, resulting in more complete fuel combustion and improved engine power, torque, and fuel efficiency. The **double-gapped design** (with a secondary gap of 0.7 mm) optimizes combustion stability across a wide range of engine speeds and loads, making it ideal for both high-performance applications and daily driving scenarios.

The **UR6IX** plug is built with NGK s **resistor tip**, which helps suppress radio interference and electrical noise, reducing potential issues with modern vehicle electronics and aftermarket audio systems. Its **heat range (7)** is carefully calibrated to balance durability and performance, making it suitable for a broad range of engines, including turbocharged and naturally aspirated applications. The **silver-tipped ground electrode** enhances wear resistance and ensures consistent spark formation over an extended service life, often exceeding **100,000 miles** under normal driving conditions. The **laser-welded construction** of the iridium electrode guarantees superior strength and longevity, preventing electrode breakage or deformation even under high-stress conditions.

Beyond its technical advantages, the **UR6IX** spark plug is designed with **NGK s advanced ceramic insulator coating**, which provides excellent thermal conductivity and resistance to electrode fouling, oil, and carbon buildup. This coating helps maintain optimal ignition performance even in demanding environments, such as high-altitude driving or heavy-duty applications. The plug s **threaded design** ensures a secure, vibration-resistant fit, while the **copper core** within the electrode enhances heat dissipation, reducing the risk of pre-ignition or knock. Whether installed in a high-performance sports car, a turbocharged daily driver, or a modern turbocharged diesel hybrid, the **NGK Iridium IX UR6IX** delivers a seamless blend of precision engineering, durability, and performance-enhancing ignition reliability.

### **Pros and Cons of Buying NGK Spark Plugs (NGKUR6IX-7348 UR6IX IX Iridium Plug)**

1. **Longer Lifespan** Iridium spark plugs, including the NGK UR6IX series, are known for lasting significantly longer than traditional copper or platinum plugs. This model is designed for high-performance engines and can often exceed 100,000 miles before needing replacement, reducing maintenance frequency.

2. **Improved Fuel Efficiency** The precise spark and optimized electrode design help ensure more complete combustion, which can lead to better fuel economy. This is particularly beneficial in modern fuel-injected engines where efficiency is a priority.

3. **Enhanced Engine Performance** The fine iridium tip provides a stronger, more consistent spark, which can improve cold starts, smoother acceleration, and better throttle response. This is especially useful in turbocharged or high-compression engines.

4. **Durability and Heat Resistance** Iridium is a harder metal than platinum or copper, making these plugs more resistant to wear, erosion, and heat. This makes them suitable for high-performance and turbocharged applications where extreme conditions are common.

5. **Compatibility with Modern Engines** The NGK UR6IX is designed for use in gasoline engines with a compression ratio of 9.5:1 or higher, making it a good fit for many modern vehicles, including those with direct injection or turbocharging.

6. **Lower Emissions** More efficient combustion means fewer unburned fuel particles, which can help reduce harmful emissions, aligning with stricter environmental regulations.

7. **Easy Installation** Like most standard spark plugs, these are designed for straightforward installation, though they may require a torque wrench to avoid overtightening.

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1. **Higher Upfront Cost** Iridium spark plugs are significantly more expensive than traditional copper or platinum plugs. While they last longer, the initial cost can be a deterrent for budget-conscious buyers.

2. **Potential for Over-Tightening** Due to their durability, these plugs can be more difficult to remove if overtightened. Improper installation may lead to stripped threads or damaged plug sockets, requiring additional labor or replacement.

3. **Limited Use in Older or Low-Compression Engines** While these plugs excel in high-performance or turbocharged engines, they may not offer a noticeable advantage in older vehicles with lower compression ratios or carbureted systems. In such cases, a standard platinum or copper plug might be sufficient.

4. **Mismatch with Some Engine Tuning** In heavily modified or turbocharged engines, using the wrong spark plug (even if it s iridium) can lead to pre-ignition or detonation. The NGK UR6IX is optimized for specific applications, and using it in an improperly tuned engine could cause damage.

5. **Less Common in Aftermarket Swaps** While widely available, these plugs may not be as commonly recommended in DIY forums or aftermarket tuning guides compared to other brands like Bosch or Denso, which sometimes have more tailored options for specific builds.

6. **Potential for Fouling in Rich-Mix Conditions** In engines running excessively rich fuel mixtures (e.g., due to a faulty sensor or incorrect tuning), iridium plugs can foul more easily than some other types, though this is less common than with copper plugs.

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The **NGK UR6IX Iridium spark plug** is an excellent choice for **high-performance, turbocharged, or modern gasoline engines** where longevity, fuel efficiency, and reliability are priorities. Its superior durability and performance benefits justify the higher cost for vehicles that demand it. However, for **older cars, budget-conscious buyers, or engines with lower compression**, the added expense may not be worth the marginal gains, and a more affordable platinum or copper plug could suffice.

If you re running a **high-performance, turbocharged, or direct-injected engine**, the NGK UR6IX is a strong recommendation due to its proven track record. For **stock or lightly modified vehicles**, consider whether the cost aligns with your needs sometimes a slightly cheaper but still high-quality iridium plug (e.g., NGK s lower-tier iridium models) could offer a balance.

- You have a **turbocharged, high-compression, or direct-injected engine**.

- You prioritize **long lifespan, fuel efficiency, and performance**.

- You re willing to pay a premium for **reliability and reduced maintenance**.

- Your engine is **older or low-compression** (a platinum plug may be overkill).

- You re on a **tight budget** (look for slightly cheaper iridium options or platinum plugs).

- Your vehicle is **stock or lightly modified** (a standard iridium plug might be sufficient).

For most **modern, performance-oriented vehicles**, the NGK UR6IX is a **solid, high-quality choice** that delivers on its promises. Always ensure proper installation and consult your vehicle s manual or a mechanic if unsure about compatibility.

Details:

Resistor: Yes. Terminal Type: Solid. Thread Size: 14mm. Fits Chrysler, Crusader, Hardin Marine, Marine Power, Mercury, OMC, Reline and Volvo Pent inboard engines Boston Whaler Sprint jet boat.

Specifications: Shell. Type: Fine Wire. Ngk IX Iridium Series Plugs were designed Specifically for the Performance Enthusiast. Shape: Taper Cut.

Material: Nickel. NGK 7348 UR6IX IX Iridium Spark Plug. Thread Pitch: 1.25mm. Resistor Value: 5K Ohm.

Type: Standard. Projection: Projected. Seat Type: Tapered. Ground Electrode.

Material: Iridium. Overall height : ISO.

part #: ngkur6ix prices

• $45.91-$82.08

specifications cyclesparkplugs:

• brand: Ngk Spark Plugs
• mpn: Ngkur6ix
• part type: Plug

shipping cycleSparkPlugs:

• type: Fixed
• class: Standard
• transit: 2-6 Days
• service: Standard
• cost: $9.95

returns cycleSparkPlugs:

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

seller cycleSparkPlugs:

• # reviews: 3210
• rating: 99.8%
• city: Riverhead, New York

offer cycleSparkPlugs:

• options: Ship-to-home
• quantity: 8
• availability: In Stock
• sold: 0
• started: March 5, 2026

general cycleSparkPlugs:

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

payments cycleSparkPlugs:

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• credit card: Mastercard

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