Fits :Type-1 engines with 170 mm pulley (except 25hp) Specifications: AVX 10 x 900 La
Paruzzi number : 03941
Fits :Type-1 engines with 177 mm pulley Specifications: AVX 11.3 x 912 La
Paruzzi number : 21941
Can be used as :replacement for kit No 1968
Paruzzi number : 01966