Choose the part of the vehicle where the spare you are looking for is located, you will then see the part diagrams of your 1983 4 cyl. 2 soup..

BMW Motorrad Classic K 100 1983

K 100 1983 4 cyl. 2 soup. K589 (0502,0503,0513)
Model: K 100 RS
K 100 4 cyl. 2 soup.
Model code K589 (0502,0503,0513)
Year: 1983

K 100 1984 4 cyl. 2 soup. K589 (0502,0503,0513)
Model: K 100 RS
K 100 4 cyl. 2 soup.
Model code K589 (0502,0503,0513)
Year: 1984

K 100 1985 4 cyl. 2 soup. K589 (0502,0503,0513)
Model: K 100 RS
K 100 4 cyl. 2 soup.
Model code K589 (0502,0503,0513)
Year: 1985

K 100 1986 4 cyl. 2 soup. K589 (0502,0503,0513)
Model: K 100 RS
K 100 4 cyl. 2 soup.
Model code K589 (0502,0503,0513)
Year: 1986

K 100 1987 4 cyl. 2 soup. K589 (0502,0503,0513)
Model: K 100 RS
K 100 4 cyl. 2 soup.
Model code K589 (0502,0503,0513)
Year: 1987

K 100 1988 4 cyl. 2 soup. K589 (0502,0503,0513)
Model: K 100 RS
K 100 4 cyl. 2 soup.
Model code K589 (0502,0503,0513)
Year: 1988

K 100 1989 4 cyl. 2 soup. K589 (0502,0503,0513)
Model: K 100 RS
K 100 4 cyl. 2 soup.
Model code K589 (0502,0503,0513)
Year: 1989