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
INLET MANIFOLD SINGLE CARB UNIT 500 TR5T T100C 1967-74
Part No: 70-7578
SCREW PATENT PLATE TRIDENT 4BA X 5/16
Part No: 71-0007
CAMSHAFT INLET 500 NOS
Part No: 71-0044
ROCKER BALL PIN PU/650/750
Part No: 71-0070
ROTOR KEY
Part No: 71-0082
CAMSHAFT BUSH T/S
Part No: 71-0286
CAMSHAFT BUSH D/S
Part No: 71-0287
OIL PUMP DRIVE NUT INLET CAM 1970-82
Part No: 71-1007- Out of stock
CAMSHAFT 650 INLET 69-73
Part No: 71-1063
O RING 5SPEED HIGH GEAR
Part No: 71-1070
SCREW 2BA X 1/2 UH
Part No: 71-1075
SCREW 2BA X 1 1/4 UH
Part No: 71-1077
BREATHER PIPE ENGINE TO T PIECE 70-73
Part No: 71-1149
SHIELD GEARBOX MAIN BEARING
Part No: 71-1271
PUSHROD TUBE SEAL
Part No: 71-1283