Echo CS-400/490/4910/501P cage and foam rings

PLEASE READ FULL DESCRIPTION This cage and foam ring will fit the CS-400 if you cut a hole in the top cover.  This will also fit 490/4910/501P chainsaws, IF you purchase the CS-400 intake elbow and the filter "CAP"  You will also need to cut a hole in the actual air filter cover or run without the air filter cover.  Part numbers for the CS-400 parts needed to use this cage and foam rings :  INTAKE ELBOW:  13030139935 Air Filter Cap 13040538332   These 2 items can be purchased from www.sawagain.com Just do a search on the saw again website and type in those part numbers.