NGK 5266 Laser Iridium spark plugs, IZFR6K-11S, promoting smooth starts and improved efficiency.
NGK 5266 Laser Iridium spark plugs, IZFR6K-11S, promoting smooth starts and improved efficiency.

NGK 5266 Laser Iridium Premium Spark Plugs IZFR6K-11S – 4 Pack

Overview NGK 5266 Laser Iridium Premium Spark Plugs arrive as a practical 4-pack, designed to deliver crisp...
Vendor: NGK
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NGK 5266 Laser Iridium spark plugs, IZFR6K-11S, promoting smooth starts and improved efficiency.

NGK 5266 Laser Iridium Premium Spark Plugs IZFR6K-11S – 4 Pack

£61.85
NGK 5266 Laser Iridium spark plugs, IZFR6K-11S, promoting smooth starts and improved efficiency.

NGK 5266 Laser Iridium Premium Spark Plugs IZFR6K-11S – 4 Pack

£61.85
Description
Description
x

Overview

NGK 5266 Laser Iridium Premium Spark Plugs arrive as a practical 4-pack, designed to deliver crisp ignition and long service life in a wide range of gasoline engines. The combination of advanced materials and thoughtful geometry aims to support reliable starts, stable idle, and smooth operation for everyday driving and light-duty use.

The plug's construction highlights a laser-welded iridium center electrode tip that resists wear under repeated ignition events, paired with a platinum disc on the backside of the ground electrode to help extend life. A smaller tip diameter and the insulator’s protective features work together to help minimize wear and carbon buildup, supporting consistent performance over time.

Key design features

  • Laser welded Iridium center electrode tip for durable sparks
  • Platinum disc on the ground electrode to help extend life
  • Longer insulator nose and corrugated ribs reduce carbon buildup and suppress misfires
  • Triple gasket seal to reduce combustion gas leakage
  • Faster starts and quicker throttle response when conditions allow
  • Trivalent Metal Plating for improved anti-corrosion and anti-seizing protection

Practical benefits for daily driving

  • Stable idle and consistent ignition across temperature changes
  • Improved cold starts and smoother engine feel on takeoff
  • Potential gains in efficiency and lower emissions through precise combustion

Why choose NGK 5266 in IZFR6K-11S form

This 4-pack is a convenient option for maintenance intervals and ensures you replace worn plugs with a matched set. The design aims to support durable performance across miles, with materials chosen to resist corrosion and seizing. While results vary by vehicle and driving conditions, many drivers appreciate the balance of reliability, start performance, and fuel economy potential that these plugs are designed to offer.

Tip: When replacing, ensure proper torque and clean threads, and consider installing all four plugs as a set to promote even wear and consistent engine behavior.

FAQ

Q: What engines are compatible with NGK 5266 IZFR6K-11S?

A: Designed for engines that require IZFR6K-11S; verify compatibility with your vehicle manual.

Q: How should I install these plugs to maximize performance?

A: Torque to factory spec, clean threads, and install the full set together for even wear.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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