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:
- E = 70 – e.g. E7869 becomes 70-7869
SPRING FLASHER UNIT
Part No: 60-3614
CYLINDER HEAD BOLT 650 OUTER
Part No: 70-0327
CYLINDER HEAD BOLT STAINLESS
Part No: 70-0327S
IDLER GEAR SPINDLE
Part No: 70-0375
NUT CRANKSHAFT AND REAR WHEEL
Part No: 70-0398
IDLE SPINDLE BUSH
Part No: 70-0400
SPRING OIL PUMP VALVE
Part No: 70-0403
EXHAUST ROSE BOLT (CEI)
Part No: 70-0409
NUT FOR TAPPET ADJUSTER CEI
Part No: 70-0470
GASKET ENGINE SUMP PRE-UNIT
Part No: 70-0487
CIRCLIP HIGH GEAR BEARING P/U+650/750
Part No: 70-0489
OIL PUMP DRIVE BLOCK
Part No: 70-0495
SUMP FILTER PRE-UNIT
Part No: 70-0529
BATTERY BOX BOLT
Part No: 70-0536
STUD BARREL BASE
Part No: 70-0672