GEARHEAD AIR FILTER UPGRADE SEALING KIT FITS ECHO CS-590 CS-600P CS-620P CS-620PW

GENUINE GEARHEAD PART--ALL OTHER SELLERS ARE COUNTERFEIT.  TRAVERSE CREEK INC IS THE ONLY AUTHORIZED DEALER FOR THE GEARHEAD BRAND OF PARTS. This item was developed to address a deficiency of the factory filtration sealing. By adding a laser-cut 304 stainless steel shelf, an O-ring can be added and provide a perfect seal to the air filter. Additionally, O-rings are also provided to properly seal around the air filter stud ensuring that 100% of the airflow has to go through the air filter media. COMPATIBLE WITH ALL CS-590 AND CS-620 VARIANTS WILL NOT FIT ON REALLY EARLY MODEL CS-600P WITH THE "ROUND" INTAKE TUBE WITHOUT SOME LIGHT MODIFICATION OF WASHER. INCOMPATIBLE SERIAL NUMBER BREAKS: C03603001001 - C03603999999  C03704001001 - C03704999999  C22312001001 - C22312001600   WILL WORK WITH LATE MODEL CS-600P SERIAL NUMBERS OF: C22312001601 - C22312999999 C22413001001 - C22413001550 C22413001551 - C22413999999