GY00115 Mulch Cover - Compatible with John Deere 100, D, L, and LA Series Mowers w/42" Decks

What It Is

The GY00115 Mulch Cover is an aftermarket accessory that replaces the standard discharge chute on John Deere 100, D, L, and LA Series mowers with 42-inch decks. It blocks grass clippings from ejecting out the side, forcing them back under the deck for finer mulching and leaving no piles on your lawn.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: Only fits 42-inch decks (not 38", 48", or 54"). Measure your deck from blade tip to blade tip to confirm.
• Model series: Works with John Deere 100 (D100, E100, S100), D (D105, D110, D125, D130, D140, D155, D160, D170), L (L100, L110, L120, L130), and LA (LA105, LA110, LA115, LA125, LA130, LA135, LA140, LA145, LA150, LA155, LA165, LA175) series. Check your model number on the frame or under the seat.
• Mounting: It snaps onto the same two pins as the OEM discharge chute. No tools required for installation, but ensure your deck has those side-mounted pins (most 42" decks do).

Key Things to Know

• Quality: Made from durable black plastic, but slightly thinner than the OEM part. It holds up well for residential use but may crack under heavy commercial use or if hit by debris.
• Installation: Takes 30 seconds—just line up the slots with the pins and push down. No removal of the blade or deck needed.
• Common gotcha: If your mower has a bagger or side-discharge attachment, you’ll need to remove it first. The mulch cover replaces those, not works alongside them.
• Performance: Works best with a sharp blade and when mowing dry grass. Wet or tall grass can clog the deck, so take smaller cuts.

Should You Buy It

This is a solid budget-friendly option if you own a compatible John Deere 42” deck mower and want to switch from side-discharge to mulching without buying a dedicated mulching kit or blade. It’s ideal for residential lawns where you want a clean, clippings-free finish. If you need heavy-duty durability for commercial use or a perfect OEM fit, consider the John Deere-branded part instead.