NGK Iridium IX Spark Plugs (4pc) Universal | #6509/LTR6IX-11

SKU: 6509-NGK
Availability: Out Of Stock
Please hurry! Only 0 left in stock

Free UK Shipping On Orders Over £150

Terms and Conditions apply

Buy Now Pay Later

Plan. Buy. Pay in 3 with PayPal pay later

Check Product Availability

You’re welcome to get in touch for estimate lead times on any of our products using our Live Chat feature.

'Out of Stock' Lead Times

Our typical lead time for the majority of 'Out of stock' parts is 10-14 business days, subject to availability from the manufacturer. Orders will be dispatched as soon as all items become available.

Get Expert Advice

Unlock the full potential of your vehicle with Nemesis UK. Get expert advice from our team including guidance on fitting and recommended installers.

Get Expert Advice

Iridium IX Spark Plugs (Set of 4) 
Universal / See Applications Below

Manufactured by NGK | Part #6509/LTR6IX-11

NGK logo

These high-performance spark plugs from NGK offer a plethora of benefits for your vehicle.


  • Sold as a Set of Four (4)
  • OE Heat Range
  • Designed for Naturally Aspirated Engines
  • Iridium Alloy Construction
  • Trivalent Metal Plating
  • Provides Consistently Stable Spark
  • Extremely High Melting Point
  • Increased Acceleration and Fuel Efficiency

Perfect for increasing acceleration while providing greater fuel efficiency and extreme ignitability. The spark plugs remain in the stock heat range, making them the ideal choice for your naturally aspirated engine.


  • Spanner Size: 16 mm
  • Outer thread [mm]: 14
  • Thread Length [mm]: 25
  • Spark Position [mm]: 3,5
  • Spark Plug: Fixed SAE connector, Iridium Middle Electrode, 1 - Earthed Electrode, interference Suppression 5 kOhm, with taper gasket seat
  • NGK: Spark Plug
  • Manufacturer part number: 6509
  • Manufacturer: NGK
  • Use number: NGK: LTR6IX-11

Please Note: These spark plugs are designed for Naturally Aspirated use ONLY. Forced Induction and/or Nitrous Applications, please speak to us for further recommendations. Due to various engine applications please check the correct spark plug gap required for engine & use.

Vehicle Application:

Universal application includes but not limited to:

  • Chevrolet Captiva 2010-2018
  • Chrysler 300C 2011-
  • Chrysler Grand Voyager 2011-
  • Dodge Avenger 2012-2014
  • Dodge Challenger 2011-
  • Dodge Charger 2011-2014
  • Dodge Durango 2011-
  • Fiat Freemont 2011-
  • Ford BMax 2012-
  • Ford CMax 2010-
  • Ford Fiesta 2008-
  • Ford Focus 2002-2004 / 2010-
  • Ford Fusion 2010-2012
  • Ford Galaxy 2010-2015
  • Ford Grand C-Max 2010-
  • Ford GT 2016-
  • Ford KA 2003-2008
  • Ford Kuga 2013-
  • Ford Mondeo 2007-2015
  • Ford S-Max 2010-2014
  • Ford StreetKA 2003-2005
  • Ford Tourneo 2013-
  • Ford Transit 2013-
  • Jeep Grand Cherokee 2010-
  • Jeep Wrangler 2011-
  • Lancia Thema 2011-
  • Lancia Voyager 2011-2014
  • Mazda 3/5/6 2004-
  • Maxda MX-5 2005-2014
  • Ram 1500 2014-
  • Saab 9-5 2010-2012
  • Vauxhall Insignia 2008-2017
  • Volvo S60 2010-2015
  • Volvo S80 2010-
  • Volvo V40/V60/V70 2012-
  • Volvo XC60 2009-2014

*Please double check part & vehicle application using NGK Part Finder

Ordering is made easy with our online Checkout.

You will see estimate availability of products above the ‘Add to Cart’ button.

Many parts are held in stock, or available to order for delivery in 10-14 days, subject to availability from our suppliers.

Orders placed before 12pm Monday-Friday may be dispatched same-day, provided ALL items in your order are in-stock (exceptions apply).

We now offer FREE UK SHIPPING on orders for parts over £150 total.

For orders under £150 or to non-UK destinations, shipping charges are applied at Checkout.

You can check costs for shipping via the Checkout:

  1. Add the item(s) to your Cart
  2. View Cart and select Checkout
  3. Enter your personal details and delivery address
  4. Shipping costs will automatically update and you can review your order total before completing payment
  5. If you wish to continue shopping, click the logo at the top of the checkout page to return to our Home page.

For orders sent outside the UK (Europe, Rest of the World)

Our website pricing usually includes UK VAT.

Once you proceed to Checkout and update your delivery address to a non-UK destination, pricing in the checkout will automatically update to exclude UK VAT.

If you continue to browse our website during this, or subsequent sessions, the pricing you will see in our online store may automatically show as excluding UK VAT due to the delivery address now stored in the Checkout.

IMPORTANT – Orders delivered outside the UK will usually be subject to additional Local Customs and Import Duties. Such charges are the responsibility of the recipient and vary from country to country. Contact your local customs office for more details.

Comprehensive information on Ordering, Shipping rates as well as Warranty and Returns plus more can be found here.

You May Also Be Interested In

Recently Viewed

Shop By Brand