K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16" (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.

Part RC-3250 Product Specifications
Base Outside Diameter: 5 in (127 mm)
Flange Inside Diameter: 3.125 in (79 mm)
Flange Length: 0.75 in (19 mm)
Flange Type: Centered
Height: 6 in (152 mm)
Top Outside Diameter: 3.5 in (89 mm)
Top Style: Metal
Top Material/Finish: Chrome
Flanges: 1
Weight: 1.2 lb (0.5 kg)
 

Notes: RC-9320 has a tube stop in the flange, so there is a little step that stops the filter from going onto the tube very far.  The RC-3250 is the opposite.