GY00115 42'' Deck Mulch Cover Perfectly Fit for John Deere 102 L 105 110 111 118 LA 115 X 110 120 D 125 S 240 Series Mowers

What It Is

The GY00115 is a 42-inch deck mulch cover designed to convert John Deere mowers from side-discharge or bagging to mulching mode. It blocks the deck opening so grass clippings are recirculated and finely chopped, ideal for lawn feeding and reducing cleanup.

Fitment & Compatibility

Before buying, verify your mower has a 42-inch stamped steel deck (not fabricated). This cover fits select John Deere models: 102, 105, 110, 111, 118, LA115, X110, X120, D125, S240, and 200-series. Measure your deck opening width – it must match the cover’s 42-inch span. Check the mounting hole pattern: it uses two bolts (typically 5/16″) on the deck’s rear edge. OEM part equivalents are John Deere GY00115 or AM137353. Avoid if your deck has a different design (e.g., 48-inch decks or 100-series with 38-inch decks).

Key Things to Know

• Quality concerns – With a 2.3-star rating, reviewers report thin metal that bends easily, poor paint adhesion, and rust within one season. Inspect for sharp edges before installation.
• Installation difficulty – Simple bolt-on (10 minutes), but holes may not align perfectly. You might need to widen them with a drill or file. Use anti-seize on bolts to prevent corrosion.
• Common gotchas – The cover may not seal tightly, leaving gaps that reduce mulching efficiency. Check deck level and blade sharpness – dull blades or uneven deck will still leave clumps.
• Alternative – Consider OEM John Deere GY00115 for better fit and durability, though it costs more.

Should You Buy It

Skip this unless you’re on a tight budget and willing to modify (drill holes, add weatherstripping) for a proper seal. For reliable mulching and longevity, spend the extra $15-20 on the OEM version or a sturdier aftermarket brand like Rotary.