Mulch Cover GY00115 Fits John Deere 42" Decks 100 Series D100 D110 E120 E130 Z23

What It Is

The Mulch Cover GY00115 is an aftermarket replacement part designed to block the discharge chute on John Deere 42-inch cutting decks, converting side-discharge mowers into mulching mowers. It’s intended for use with select 100 Series tractors and Z23 zero-turn models, letting you chop clippings finer for lawn feeding.

Fitment & Compatibility

Before buying, verify your deck is exactly 42 inches (measured blade tip to blade tip). This cover fits John Deere models: D100, D110, D120, D130, D140, D150, D155, D160, D170, D175, E100, E110, E120, E130, E140, E150, E170, E180, L100, L110, L118, L120, L130, LA100, LA105, LA110, LA115, LA120, LA125, LA130, LA135, LA140, LA145, LA150, LA155, LA165, LA175, LX172, LX173, LX176, LX178, LX186, LX188, LX277, LX279, LX280, X100, X110, X120, X140, X145, X155, X165, X175, X185, X190, Z23, Z225, Z235, Z245, Z425, Z435, Z445, Z465, Z645, Z655, Z665, Z675, Z695, Z725, Z735, Z745, Z755, Z835, Z845, Z855, Z865, Z925, Z935, Z945, Z955, Z965, Z975. This is an aftermarket part—not OEM John Deere—so expect slight differences in plastic thickness and finish. The OEM part number is GY00115; measure your deck’s chute opening width (roughly 4.5 inches) and bolt hole spacing (center-to-center about 3.5 inches) to confirm fit.

Key Things to Know

• Quality: Aftermarket plastic may be less rigid than OEM, but users report it holds up under normal use. Check for warping if stored in direct sun.
• Installation: Simple—remove two bolts on the chute deflector, position the cover, and reinstall bolts. No tools beyond a socket wrench. Plan 10 minutes.
• Common Gotcha: The cover may not seal perfectly on decks with heavy rust or debris buildup. Clean the chute area thoroughly before mounting.
• Mulching Performance: Works best with a mulching blade (not included). Without it, clippings may clump in wet grass.

Should You Buy It

Buy this if you have a compatible 42-inch John Deere and want an affordable way to switch to mulching without buying a dedicated mulching deck. It’s a budget-friendly alternative to OEM (which costs ~$50) and installs in minutes. Skip it if you need a perfect OEM fit, have a non-42-inch deck, or prefer bagging—this cover blocks the chute completely.