NGK
NGK WR5IX 7510 Spark Plug Iridium IX
£10
Lowest price we found
£81.98
The Champion RHW78N/012 Copper Plus is a spark plug with a copper core and a nickel-alloy centre electrode. It has a 22 mm diameter and is discontinued, so it is no longer manufactured.
Copper Plus plugs are described as replacements for classic cars, motorcycles, marine and garden engines originally fitted with Champion. They are also standard service plugs 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 23 days
The price has stayed at £81.98 since 13 October.