Before 1972 Triumph used a letter prefix and from 1972 onwards a number prefix.
The later system has the number prefix followed by four numbers.
e.g. E2879 became 70-2879 and T57 became 57-0057 etc.
These Prefixes are as follows:
- E1 = 71 – e.g. E11698 becomes 71-1698
BOLT ROCKERBOX TO HEAD 1972 5/16 UNF
Part No: 71-2889
BOLT ROCKERBOX TO HEAD 1972 5/16 UNF STAINLESS
Part No: 71-2889S
BREATHER PIPE ENGINE TO T PIECE 70-73
Part No: 71-1149
BREATHER PIPE OIL IN FRAME TO T PIECE
Part No: 71-2349
BRIDGE PLATE
Part No: 71-3553- Out of stock
BRIDGE PLATE STAINLESS
Part No: 71-3553S
BUSH IDLE SPINDLE
Part No: 71-7492
CAMFOLLOWER PR
Part No: 71-7008- Out of stock
CAMSHAFT 650 INLET 69-73
Part No: 71-1063
CAMSHAFT BUSH D/S
Part No: 71-0287
CAMSHAFT BUSH T/S
Part No: 71-0286
CAMSHAFT EXHAUST T140 ETC
Part No: 71-7017
CAMSHAFT INLET 500 NOS
Part No: 71-0044
CAMSHAFT INLET 750 CC
Part No: 71-7016
CARB ADAPTER RING 376/600 CARB
Part No: 71-2086