NGK BPR6ES.Resistor plug

Common plug for MG and Triumph ( not Tr3-4A)

Slightly hotter running engine plug for A Plus 998 and all 1275cc standard engines.

See BP5ES for std tune 998/850

high compression street performance should use a colder plug BP7ES or BPR8ES

and race engines BP9EV or BP10EV

non resister plugs avail