Choose the part of the vehicle where the spare you are looking for is located, you will then see the part diagrams of your 1978 Boxer (78-85).

BMW Motorrad Classic R 45 1978

R 45 1978 Boxer (78-85) R45
Model: R 45/N
R 45 Boxer (78-85)
Model code R45
Year: 1978

R 45 1979 Boxer (78-85) R45
Model: R 45/N
R 45 Boxer (78-85)
Model code R45
Year: 1979

R 45 1980 Boxer (78-85) R45
Model: R 45/N
R 45 Boxer (78-85)
Model code R45
Year: 1980