OEM Arctic Cat Part Number: 6639-528 Fits Arctic Cat: 2007-2016 5000, 2007-2016 9000 Includes one gallon of synthetic C-TEC4 oil, oil filter, belly pan plugs, o-ring, washer and disposable funnel. Exclusive formulation includes additives that help prevent deposit formations, ring Provides superior performance in ALL operating conditions including in the extreme cold. Synthetic base stocks offer high lubricity that protects engine from wear and scuffing. Arctic Cat synthetic C-TEC4 engine oil is purpose-built and proven for Arctic Cat 4-cycle snowmobile engines, and is the ONLY oil recommended by Arctic Cat engineering. Arctic Cat 4 Stroke 1100cc Snowmobile Oil Change Kit OEM 6639-528