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Champion Spark Plug N4C
Champion Spark Plug: N4C. It can be fitted to:
TRIUMPH Unit Construction 3TA, 5TA, T90, T100. Unit Construction 650, pre 1969.
A.J.S. 1964 onwards: 18 Statesman, 31 Swift, 33CSR, 33, 16C Experts.
ARIEL Leader, Arrow, Arrow Super Sport, Golden Arrow, Arrow 200 (gap .030")
BSA
A7SS, A10RGS, A10RR, A10SR. A50, A50C, A50CC, A65, A65LC, A65R, A65T. B32 Alloy Head. Gold Star Racer: B40SS90, Victor B44R, B44SS. Victor B44ET, B44GP, B44VS. C15SS80. Bantam Models: D10, D14/4, D14/4S.
MATCHLESS
1964 onwards: G3C Maestro, G3C Trials, G80 Major, G12 Majestic.
NORTON
650 Dominator, 650 Mercury. 1964 onwards all other models.
ROYAL ENFIELD
736cc Interceptor.
VINCENT
MSS 500cc Alloy. Viper Sports, Viper Clubman, Venom Special, Venom Sports (gap .025")
Set all spark plug gaps .020" unless otherwise shown.