This K&N Pod filter has a 3.5" Inlet on it.
The total length including flange is nearly 8 long.
 

Product Specifications (RE-0950)
Top Outside Diameter 4.625 in (117 mm)
Base Outside Diameter 6 in (152 mm)
Height 6 in (152 mm) exluding the flange
Flange Inside Diameter 3.5 in (89 mm)
Flange Length 1.75 in (44 mm)
Flange Type Centered

Package Contents 1 Air Filter
Product Box Height 11 in (279 mm)
Product Box Length 6.38 in (162 mm)
Product Box Width 6.38 in (162 mm)
Weight 1.6 lb (0.7 kg)

K&N Air Filter Wrap fits this filter  (RE-0950) and is a great thing combined!

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