Husqvarna Lawn Tractor Mulch Plug With Straps And Hardware 954040501 16.25 x 7.25 x 5.25 Genuine OEM. This is a Genuine OEM Husqvarna part. This manufacturer-approved mulch cover assembly (part number 954040501) is for lawn tractors. Mulch cover assembly 954040501 covers the grass chute opening on the deck. Mulch cover assembly 954040501 includes mul... - Husqvarna Lawn Tractor Mulch Plug With Straps And Hardware 954040501 16.25 x 7.25 x 5.25 Genuine OEM.