Factory Service Bulletin for 1930-1940 Big Twins
| Year | Make | Model |
|---|---|---|
| 1930 | Harley-Davidson | VL |
| 1931 | Harley-Davidson | VL |
| 1932 | Harley-Davidson | VL |
| 1933 | Harley-Davidson | VL |
| 1934 | Harley-Davidson | VL |
| 1935 | Harley-Davidson | VL |
| 1936 | Harley-Davidson | EL |
| 1936 | Harley-Davidson | VL |
| 1937 | Harley-Davidson | EL |
| 1938 | Harley-Davidson | EL |
| 1939 | Harley-Davidson | EL |
| 1940 | Harley-Davidson | EL |
Fitment details provided by supplier.
