BKR7EIX Iridium Spark Plug

The NGK BKR7EIX is an uprated iridium spark plug, ideal for tuned and modified petrol engines that require a colder heat range and more reliable ignition. As genuine NGK parts, these are trusted by engine builders and tuners worldwide. This plug is sold individually, so ensure you order the correct quantity for your engine's cylinder count. The "7" in the BKR7EIX part code signifies a colder heat range compared to standard plugs found in many TSI and TFSI engines. This colder heat range effectively draws more heat away from the combustion chamber, crucial for preventing pre-ignition and detonation (knock) when boost pressure is increased or performance tunes (Stage 1, Stage 2, etc.) are applied. This protection is vital for preserving pistons and other internal engine components. Featuring a fine-wire iridium centre electrode, this spark plug facilitates a stronger, more consistent spark with reduced voltage. This translates to more reliable ignition under boost and at higher RPMs, smoother idling, improved throttle response, and potentially better fuel efficiency and lower emissions over time compared to worn plugs. The iridium material also ensures a long service life due to its slow wear rate. Additionally, it includes a built-in 5 kOhm resistor to suppress radio and electronic interference. The BKR7EIX is a popular choice for VW Group engines, including the 1.8T 20V, 2.0 TFSI (EA113), and first-generation 1.4 TSI and 2.0 TSI (EA888) engines, especially when running modified software or hardware. It is often installed with a tighter gap than standard; always consult your tuner's recommended gap and verify it before installation. For full compatibility, it is recommended to use the vehicle lookup tool or check the Vehicle Fitment tab on the product listing before ordering.