NGK
NGK WR5IX 7510 Spark Plug Iridium IX
£10
Lowest price we found
£2.02
The Champion P-RA7HC Copper Plus is a 12 mm diameter spark plug with a copper core and nickel-alloy centre electrode. This discontinued plug is no longer manufactured.
Its copper core draws heat away from the tip, widening the range of driving conditions it tolerates without fouling or overheating. It is described as a natural replacement for classic cars, motorcycles, marine and garden engines originally fitted with Champion, and as a standard service plug on many later vehicles.
The plug is easy to gap and inspect, with rugged construction suited to engines running rich or being started infrequently.
At a glance
Price at the shop, last 22 days
The price has stayed at £2.02 since 13 October.