Triumph spark plug guidance table. This table will give you the original spark plug number code, the gap of the plugs & the modern day equivalent spark plugs from Champion & NGK.
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Triumph Spark Plug Guide |
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Models |
Original |
Champion |
NGK |
Gap |
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150cc Terrier, T20, T20C, T20T |
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T20SL, Tiger Cub, T20SH, TR20 |
L7 |
L82C |
B6HS |
0.020" |
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Trials Cub, Super Cub, Sports Cub |
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TS20 Scrambler |
L5 |
L82C |
B6HS |
0.020" |
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3T, 5T Speed Twin, 6T Thunderbird, |
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TR5 Trophy, Cast Iron |
L7 |
L82C |
B6HS |
0.020" |
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TR5 Trophy Alloy, TR5A, 6T Alloy |
N4 |
N4C |
B7ES |
0.020" |
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T100, T110 Cast Iron |
L5 |
L82C |
B6HS |
0.020" |
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T100, T100S, T100T, T110 Alloy |
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21 5TA, T100A, TR7A, TR25 |
N4 |
N4C |
B7ES |
0.020" |
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Tiger 100C, T120TT (gap 0.16") |
N57R |
C57R |
B10EG |
0.016" |
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Grand Prix 500cc (gap 0.16") |
L54R |
L84R |
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0.016" |
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Other Over Head Models 14mm |
L7 |
L82C |
B6HS |
0.020" |
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OVH 18mm |
K9 |
D9 |
A6 |
0.020" |
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SV Models 14mm Except TRW |
L10 |
L86C |
B6HS |
0.020" |
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SV Models 18mm |
7 |
L82C |
B6HS |
0.020" |
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Model TRW SV (army) |
L5 |
L82C |
B6HS |
0.020" |
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Tiger 90 |
N4 |
N4C |
B7ES |
0.020" |
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TR6, T120 pre 1968 |
N4 |
N4C |
B7ES |
0.020" |
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1968 Onwards |
N3 |
N3C |
B8ES |
0.020" |
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T150 Trident |
N3 |
N3C |
B8ES |
0.020" |
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T140 |
N5 |
N5C |
B6ES |
0.020" |
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TR65 |
N5 |
N5C |
B6ES |
0.020" |
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