C-Tzu Mulch Cover Kit for 42-inch John Deere 100/D/LA Series Decks — Heavy-Duty Plastic, Includes Mounting Hardware

The C-Tzu Mulch Cover Kit replaces OEM GY00115 to convert a 42-inch lawn tractor deck into an efficient mulching system for John Deere 100, D and LA Series mowers.

If you own a John Deere 100 Series, D Series or LA Series lawn tractor and want a durable replacement for the factory mulching cover, this C-Tzu kit supplies the cover and mounting hardware designed to fit 42-inch decks. Built from heavy-duty plastic with water-resistant properties, the kit finely shreds clippings and leaves to help return organic material to the turf and reduce bagging. It installs in place of a worn or missing OEM cover and is compatible with a number of similar decks from other brands that use the GY00115 part number.

How does the C-Tzu Mulch Cover work on a 42-inch deck?

The mulch cover re-directs airflow and contains clippings inside the deck so blades can repeatedly slice grass into smaller particles. Those finer clippings decompose more quickly on the lawn surface, which helps manage yard waste without additional collection. It’s a passive component that relies on blade speed and deck design rather than electronics or extra parts.

• Designed for 42-inch deck geometry used by John Deere 100/LA/D Series
• Channels clippings to encourage multiple blade passes
• Works with factory blades and belt layout—no modifications required

Will this fit my John Deere 100, D or LA Series mower?

Yes — the C-Tzu kit is made to replace OEM part GY00115 and matches the mounting points and size of many 42-inch decks in the John Deere 100, D and LA families. It also lists compatibility with select models from other brands that used the same part number. Confirm fit by comparing your current cover to the GY00115 shape and hole pattern before installing.

• Direct replacement for OEM GY00115
• Compatible with D100, D105, D110 and similar 100 Series models
• Fits LA100, LA105, LA110 and comparable LA Series tractors

How tough is the material and how will it hold up outdoors?

The cover is molded from heavy-duty, weather-resistant plastic formulated to withstand temperature swings, moisture and routine deck use. That durability reduces the chance of cracking or warping compared with thin, brittle alternatives. While rugged, like any plastic deck part it should be inspected periodically for damage after impacts or extended exposure to rough conditions.

• High-strength plastic resists moisture and UV-related wear
• Engineered to tolerate deck vibration and normal use
• Includes mounting hardware for secure attachment

What does the kit include and how hard is installation?

The package ships with one mulch cover and a set of mounting hardware so you can swap the old part for the new one. Installation is straightforward for anyone comfortable working under the deck—typically requiring basic hand tools and about 20–40 minutes. Keep the tractor off and the deck supported while you remove blades or supports as needed to access mounting fasteners.

• 1 x C-Tzu mulch cover (42-inch deck fit)
• 1 x mounting hardware set for direct replacement
• Simple bolt-on installation; follow safety precautions during fitment

Who this is for: The C-Tzu Mulch Cover Kit is intended for owners of John Deere 100, D and LA Series lawn tractors (and compatible decks using OEM GY00115) who want a robust, cost-effective replacement to restore mulching performance. It’s a practical option for homeowners and small-property managers who prefer to reduce clipping cleanup and return organic material to their lawn without changing blades or deck configuration.