Kohler Maintenance and Service Kit for 18RESL， 20RES， 20RESA， 20RESAL， 20RESC， 20RESCL and 20RESL Residential Generators. For 18kW and 20kW models.<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>OEM Kohler Air Filter</li><li>Premium Oil Filter</li><li>Premium Spark Plugs</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41BMHziAbEL.jpg" noproxy>