Champion Spark Plugs (1) - Choose Spark Plug Type Spark Plug Type:L82C - (Non-Resistor) Thread pitch of these nuts

Thread pitch of these nuts are 5/16" x 26 (CEI)

and a detailed instruction slip

*****Paint quality of this part is "OK" as it is 39 years old

M Part number is 42-8426 or 42-8334

* Top Quality Lucas Type 12 Volt 10 Amp Single Phase 2-Wire Alternator

Champion Spark Plugs (1) - Choose Spark Plug Type Spark Plug Type:L82C - (Non-Resistor) Thread pitch of these nutsWhen it comes down to choosing a spark plug for your vintage Triumph, BSA or Norton motorcycle choose Champion! Most vintage British motorcycles came with Champion spark plugs from the factory making them OEM. Choose from a large selection of genuine Champion spark plugs including the N3C, N4C, N5C, N7YC and much more. All Champion spark plugs we stock are the Champion "Copper Plus" variety. Here at CBS parts we only use 1 brand of spark plug and that