THis K&N Filter assembly will only nount on Weber IDF carburetors by using individual air horns.

Product Specifications
Height 6 in (152 mm)
Outside Length 8.875 in (225 mm)
Outside Width 5.25 in (133 mm)
Inside Length 7.375 in (187 mm)
Inside Width 3.75 in (95 mm)

Air Filter Shape Oval
Inlet Diameter 7.375 in (187 mm)
Mounting Hardware Included Yes
Neck Flange 1.906 in (48 mm)
Overall Height 6.25 in (159 mm)
Replacement Filter E-3491
Style Oval
Top Material Chrome/Metal

Product Box Height 7.4 in (188 mm)
Product Box Length 12.5 in (318 mm)
Product Box Width 12.3 in (312 mm)
Weight 2.8 lb (1.2 kg)