Triumph
Motorcycle
Engine Frame
numbers~
To enable you
to purchase the
correct parts
for your machine
you will need to
know the Part
reference
numbers.
These are found
in the Parts
book for your
machine.
If you are
unsure of the
year of the
machine, below
are the Triumph
Frame / engine
numbers to
enable you to
date it .
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1937 to 1949~
The year and
model were used
as a prefix to
the engine
number
From 1937 to
1939 the final
digit ( 7, 8 or
9 ) was used.
From 1946 to
1949 the final
two figures (
46, 47, 48 or
49.)
The model
numbers were T
or 5T for the
Speed Twin, T100
for Tiger 100,
3T for 350 twin
& TR5 for
Trophy.
Typical numbers
were thus:
8-T-1234 ( 1938
Speed Twin )
47-5T-23456 (
1947 Speed Twin
)
9-T100-45678 (
1939 Tiger 100 )
Pre-war frames (
1937 / 39 ) used
the prefix TH
for the 500cc
models
( 5T & T90)
and TF for the
Tiger 100.
Engine numbers
commenced at:
1946 - 72000
1947 - 79046
1948 - 88782
1949 - 100762
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1950 to 1962
Pre-Unit 500 &
650cc~
Engine
numbers had a
prefix
indicating the
model type along
the lines above
such as 3T, 5T,
6T, T100, T110,
3TA, 5TA etc.
This was
followed by a
number from the
list below.
YEAR - Pre-Unit
500 & 650cc
1950 - From 100N
1951 - 101NA to
15808NA
1952 - 15809NA
to 25000NA then
25000 to 32302
1953 - 32303 to
44134
1954 - 44135 to
56699
1955 - 56700 to
70929
1956 - 70930 to
82799 then 0100
to 0944
1957 - 0945 to
011115
1958 - 011116 to
020075
1959 - 020076 to
029363
1960 - 029364 to
030424 then D101
to D7726
1961 - D7727 to
D15788
1962 - D15789 on
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1963 to 1968
Unit 650cc~
1963 - DU101
to DU5824
1964 - DU5825 to
DU13374
1965 - DU13375
to DU24874
1966 - DU24875
to DU44393
1967 - DU44394
to DU66245
1968 - DU66246
to DU90282
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1957 to 1968
Unit 350 & 500cc
~
1957 - H101
to H760
1958 - H761 to
H5484
1959 - H5485 to
H11511
1960 - H11512 to
H18611
1961 - H18612 to
H25251
1962 - H25252 to
H29732
1963 - H29733 to
H32464
1964 - H32465 to
H35986
1965 - H35987 to
H40527
1966 - H40528 to
H49832
1967 - H49833 to
H57082
1968 - H57083 to
H67331
Frame number
prefix :
Rigid - 3T = TC
Rigid - 5T,
T100, 6T, TR5 =
TF
Swing Arm - all
pre-unit = S
Swing Arm - '21'
= H
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1969 onwards ~
Note: The
engine number is
located on the
left side of the
engine
immediately
below the
cylinder barrel
flange. The
number is
stamped onto the
raised pad.
The frame number
is stamped on
the left side of
the frame, on
the front engine
mounting lug.
The first letter
indicates the
month of
manufacture as
follows:-
A - January
B - February
C - March
D - April
E - May
G - June
H - July
J - August
K - September
N - October
P - November
X - December
The second
letter indicates
the season year
of manufacture
as follows :-
C - 1969
D - 1970
E - 1971
G - 1972
H - 1973
J - 1974
K - 1975
N - 1976
P - 1977
X - 1978
A - 1979
B - 1980
The third
section is a
numerical block
of five figures
which commence
with engine
number 00100.
The fourth
section
indicates the
model.
Example:
NC00100T120R -
N=Month C=Year,
Number,
T120R=Model.
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