TRIUMPH OIL DRAIN BOLT SET T100 T110 500 650 Pre unit ALUMINUM HEAD Norton Exhaust as there were several different

as there were several different styles

Suitable for the stepped

AMC part number 04-8499

) They will fit the stock line on ALL Norton big twin from 88 to Commando

non-bleed jet and needle

TRIUMPH OIL DRAIN BOLT SET T100 T110 500 650 Pre unit ALUMINUM HEAD Norton Exhaust as there were several differentNOT suitable for cast iron heads. STAINLESS bolts and copper washers to suit Triumph pre unit models with aluminum heads only, I believe, as fitted between head and pushrod tubes, intake and exhaust sides. Part numbers 70 2767 0984 for the bolts, 70 1335 82 1880 for the copper washers. Please check your own parts book to be sure they will work for you.