Amal style air filter assembly, pancake with offset hole. Slide fit onto Monobloc 389 and Concentric 900 carbs. Approximate dimension OD 5in, Depth 1 3/4in, 1-7/8in (46mm) ID hole Has adaptor ring and clamp included. May require different adaptor ring for other carbs. Min distance nner edge of hole approx 26mm from outer edge of filter 83-1609 Offset Air filter for 389/689 Carburettors 82-6432 Offset Air filter for 900 Carburettors
