The filter is universal. It should fit most sleds. It is K&N part number RU-1760. Here is the specs from K&N website.
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. [MORE]
RU-1760 Product Specifications
Product Style: Round Straight Universal Air Filter
Flange Angle: 20 degrees
Flange Inside Diameter: 2.438 in (62 mm)
Flange Length: 2 in (51 mm)
Flange Type: Angled
Height: 5 in (127 mm)
Outside Diameter: 3.75 in (95 mm)
Top Style: Rubber
Top Material/Finish: None
Filter Re-Oiling Amount: 0.49 oz (14 ml)
Flanges: 1
Inner Wire: No
Weight: 0.9 lb (0.4 kg)
Product Box Length: 9.19 in (233 mm)
Product Box Width: 5.63 in (143 mm)
Product Box Height: 4.69 in (119 mm)