NGK
NGK WR5IX 7510 Spark Plug Iridium IX
£10
£12.27
The NGK CR10EIX Iridium IX is a spark plug and a performance upgrade from a standard plug. Its 0.6 mm fine-wire iridium centre electrode needs less voltage to fire and produces a more concentrated spark.
The plug is described as offering quicker starting, crisper throttle response and steadier idle, particularly on high-compression, tuned or high-revving engines. Its tapered ground electrode reduces quenching of the flame kernel. Fit it in place of the equivalent standard NGK plug of the same heat range, and check the gap before installation.
At a glance
Now
£12.27
Lowest, Aug–Oct
£10.73
Highest
£12.27
Price at the shop, last 79 days
The price rose by £1.54 on 4 October. It has been lower in this period: £10.73 (19 Aug – 3 Oct).