Spark Plug Champion D9. 18mm Box of 6
D9*6 BS-1142
Champion. 18mm diameter at thread
Height without Thread: 60mm.
Early H,J,K,WM20/21 Bsa.
16H Norton. Big 4
All Norton SV Mod.
Ariel OHV Mod. which use 18 mm spark plugs
Please Note:
mid war changing to 14 mm
M20 and 16H owners, please check the size of your spark plug, as it can be 14 mm or 18 mm.
If 14 mm order spark plug L86C
Height without Thread: 60mm.
Early H,J,K,WM20/21 Bsa.
16H Norton. Big 4
All Norton SV Mod.
Ariel OHV Mod. which use 18 mm spark plugs
Please Note:
mid war changing to 14 mm
M20 and 16H owners, please check the size of your spark plug, as it can be 14 mm or 18 mm.
If 14 mm order spark plug L86C
