NGK
NGK WR5IX 7510 Spark Plug Iridium IX
£10
£141.32
The Champion RTB77WPCC CCH235 RTB77WPCC/012 is an iridium spark plug in the Champion Iridium range.
It has a fine-wire iridium centre electrode and a platinum patch on the ground electrode. Both firing surfaces resist erosion. The iridium tip can be made very thin, concentrating the spark and lowering the voltage needed to fire; the design also improves cold starting and idle stability.
It is an original-equipment replacement where Champion iridium is specified, and a long-life upgrade over the equivalent Champion copper plug of the same heat range.
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Price at the shop, last 24 days
The price has stayed at £141.32 since 13 October.