These flanges are for engine to carburetor, not carburetor toair box. Additonal Fitment: 2000-2001 SKI DOO MX Z 500 STD/SB/BLACK/TRAIL 2003-2007 SKI DOO SKANDIC 600 SUV 2001-2001 SKI DOO GRAND TOURING 500 2001-2001 SKI DOO FORMULA 500 DLX LC Item Dimensions: 4. 75" L x 3. 5" W x 2. 5" H.
