Choose the part of the vehicle where the spare you are looking for is located, you will then see the part diagrams of your 1988 4 cyl. 4 soup..

BMW Motorrad Classic K1 1988

K1 1988 4 cyl. 4 soup. K589 (0525,0535)
Model: K 1
K1 4 cyl. 4 soup.
Model code K589 (0525,0535)
Year: 1988

K1 1989 4 cyl. 4 soup. K589 (0525,0535)
Model: K 1
K1 4 cyl. 4 soup.
Model code K589 (0525,0535)
Year: 1989

K1 1990 4 cyl. 4 soup. K589 (0525,0535)
Model: K 1
K1 4 cyl. 4 soup.
Model code K589 (0525,0535)
Year: 1990

K1 1991 4 cyl. 4 soup. K589 (0525,0535)
Model: K 1
K1 4 cyl. 4 soup.
Model code K589 (0525,0535)
Year: 1991

K1 1992 4 cyl. 4 soup. K589 (0525,0535)
Model: K 1
K1 4 cyl. 4 soup.
Model code K589 (0525,0535)
Year: 1992

K1 1993 4 cyl. 4 soup. K589 (0525,0535)
Model: K 1
K1 4 cyl. 4 soup.
Model code K589 (0525,0535)
Year: 1993