Not sure what part you need? Not sure where to exactly find that information? Well we understand your concern, which is exactly why we made this page dedicated to providing you with parts numbers for vintage Triumph, BSA, and Norton motorcycles.
Now you can find the part number that you are looking for using our online parts books absolutely free. Below you will see many parts books catalogs for vintage Triumph, Norton and BSA motorcycles.
- 100's of factory parts books
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- Featured Triumph, BSA, and Norton models
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Most Triumph parts books, Norton parts books, and BSA parts books can be viewed and saved anytime at your convenience. Once you have obtained the part number you found using the parts books below, you can simply enter the original part number into our websites search bar. We use the "updated" Triumph part numbers conversion which can be found below.
Click here should you also need a free workshop manual
Click here for engine and frame numbers to date your vintage British motorcycle
Triumph "Updated" Part Number Letter Conversion
In 1973 the Triumph factory introduced and adapted a new numerical part numbering system which would out date the old style "Alpha-Numeric" system. This new system makes old outdated part numbers much easier to bring "Up-To-Date".
A very simple process that will give you much better success in finding the part that you are searching for. Here at Classic British Spares we use the "Up-To-Date" current system. Below are some examples.
| Old Part Number | New Part Number |
| E2879 (E=70) | 70-2879 |
| W1230 (W=37) | 37-1230 |
| S1023 (S=21) | 21-1023 |
| F8562 (F=82) | 82-8562 |
| D4651 (D= 60) | 60-4651 |
| E12566 (E1=71) | 71-2566 |
| F15689 (F1=83) | 83-5689 |
| H2091 (H=97) | 97-2091 |
| T1465 (T=57) | 57-1465 |
If you run across a part number H53 for example you must convert the "H" to a two digit number. In this case, "H" would be 97. So now you have 97-53. Part numbers should have a total of 4 digits after the - (dash) and two digits before the dash. Since we have 97-53 you must add two zero's before the 53. 97-0053 is the part number. S-26 = 21-0026.
BSA 500 & 650 Unit Twins Parts Books (1962-1972)
BSA BSA Unit Twins where produced from 1962-1972. Each parts book includes "export" Models A.K.A. "American models" which include some of the following models; Lightning, Rocket, Wasp, Firebird Scrambler, Spitfire, Hornet, Royal Star, etc.
| 1962-1965 A50 & A65 |
| 1966 A50 & A65 |
| 1967 A50 & A65 |
| 1968 A50 & A65 |
| 1969 A50 & A65 |
| 1970 A50 & A65 |
| 1971 "oil in frame" A65 |
| 1972 "oil in frame" A65 / A70 |
BSA Pre-Unit 500 & 650 Twins Parts Books (1947-1963)
The BSA A7 500 & A10 650 was produced from 1947-1963. Each parts book includes modelsthat follow; A7 Shooting Star, A10 Golden Flash, A10 Super Rocket, etc
| 1954-1957 BSA A7 & A10 |
| 1960-1963 BSA A7 & A10 |
Triumph 350 & 500 Unit Twins Parts Books (1957-1974)
Triumph 350 & 500 Unit Twins where produced from 1957-1974. Each parts book includes "export" Models A.K.A. "American models" which include the following; Daytona, T100R, 3TA, 5TA, Twenty-One, Tiger, T100A, T100C, Etc
Triumph 650 Unit Twins Parts Books (1963-1972)
Triumph 650 Unit Twins where produced from 1963-1972. Each parts book includes "Export" Models A.K.A. "American Models" which includeboth 4-Speed & 5 -Speed Modelsthat follow; Bonneville, Tiger, Trophy, Thunderbird, TT Special, T120RV, Etc
| 1964 Triumph 650 |
| 1965 Triumph 650 |
| 1966 Triumph 650 |
| 1967 Triumph 650 |
| 1968 Triumph 650 |
| 1969 Triumph 650 |
| 1970 Triumph 650 |
| 1971 Triumph "Oil In Frame" 650 |
| 1972 Triumph "Oil In Frame" 650 |
Triumph 750 Unit Twins Parts Books (1973-1985)
Triumph 750 Unit Twins where produced from 1973-1985. Eachparts bookincludes "export" models A.K.A. "American Models" which include 5-Speed modelsthat follow; Bonneville, Tiger, Bonneville Special, TSS, TSX, etc
Triumph Pre-Unit 350, 500, & 650 Twins Parts Books (1947-1962)
Triumph 650 pre-unit twins where produced from 1950-1962 and Triumph 350 & 500 pre-unit twinswhere produced up to approx 1956. Each parts book includes most Triumph pre-unit export models.
BSA Rocket III & A75 Triples Parts Books (1968-1972)
BSA Triples where produced from 1968-1972. Each parts book includes "export" models A.K.A. "american models" which include 4-Speed & 5-Speed modelsthat follow; Rocket III, A75, Etc
| 1969 BSA Rocket III |
| 1970 BSA Rocket III |
| 1971 BSA A75 |
Triumph Trident Parts Books (1968-1976)
Triumph Trident Triples where produced from 1968-1976. Eachparts bookincludes "export" models A.K.A. "American models" that follow; T150, T150V, Hurricane, & T160
| 1969 Triumph T150 (2nd edition) |
| 1970 Triumph T150 (3rd edition) |
| 1971 Triumph T150 |
| 1972 Triumph T150 & T150V |
| 1973 Triumph T150V |
| 1973 Triumph Hurricane |
| 1974 Triumph T150V |
| 1975 Triumph T160 |
Norton 650, 750 & 850 Parts Books (1962-1975)
Norton Commando 750 & 850 Twins where produced from 1969-1975 while various other Norton models where produced up to 1968. Eachparts bookincludes "export" models A.K.A. "American models" that follow; Atlas, Commando, Roadster, Interstate, Etc
Triumph / BSA Unit Singles Parts Books (1954-1973)
BSA "unit singles" where produced from 1959-1973 while Triumph "unit singles" where produced from 1954-1972. Eachparts bookincludes "export" models A.K.A. "American models" that follow; Cub, TR25W Trophy, C15, B40, Victor, B50 etc
