Thank you for contacting the AnswerARMY.
The mulch kit is available from your local authorized Husqvarna service center.
Your local dealer will have the part number if you contact them with your model YTH20K46 and your Product ID (9604***** **) found under the seat.
To find your local dealer please use the dealer locator found on the website: http://www.husqvarna.com
Thank you for contacting the AnswerARMY.
The mulch kit is available from your local authorized Husqvarna service center.
Your local dealer will have the part number if you contact them with your model YTH20K46 and your Product ID (9604***** **) found under the seat.
To find your local dealer please use the dealer locator found on the website: http://www.husqvarna.com