The JC30 was designed in the 1990s for the mini spi and then later the mpi version of this car but can also be used on IDA carburettors or single DCOE style carburettors using full radius air horns.
Take a look at the link below to see our wide range of air filter base plates
A - (Internal Height mm) Distance from face of baseplate and the inside face of the filter
B - (Width mm) External width of the filter not including the lug
C - (Length mm) External length of the filter.
D - (Overall Height mm) Overall external height of the filter