Craftsman 33746 Lawn Tractor Mulch Kit Genuine Original Equipment Manufacturer (OEM) Part The kit may include multiple parts; refer to your parts diagram for a complete list of parts included This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including; 33746 Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Craftsman This mulch kit (part number 33746) is for lawn tractors Mulching reduces the need for extra nitrogen fertilizer by returning nutrients to the soil