Chute Cover with Hardware for John Deere 42" Mower Deck – Replacement for GY20647, Lawn Tractor Discharge Chute Cover Kit Compatible with John Deere Riding Mowers

What It Is

This chute cover kit replaces the OEM John Deere GY20647 part, directing grass clippings downward from a 42-inch mower deck. It fits lawn tractors with 42-inch stamped or fabricated decks, primarily older and current John Deere models like the D100, D110, D120, D130, D140, D155, D160, D170, and LA series (LA105, LA115, LA125, LA135, LA145, LA155, LA165, LA175). Use it for side-discharge mulching or bagging—prevents clippings from spraying sideways.

Fitment & Compatibility

Before buying, verify your deck’s cut width is exactly 42 inches (measure from blade tip to blade tip). This cover only fits John Deere 42-inch decks with the two-bolt mounting pattern on the discharge opening—check your existing chute cover for a GY20647 or GY20570 part number. If your tractor is a newer X300 or X500 series with a 42-inch deck, the deck design changed; this cover may not align. Also confirm your deck model: it’s stamped on a metal tag near the spindle or deck underside (e.g., “42C” or “42E”). This aftermarket part uses the same bolt holes and hardware as OEM, but the plastic may be slightly thinner.

Key Things to Know

• Installation difficulty: Easy—remove two existing bolts (usually 5/16” or 3/8” head), swap the old cover, and reinstall. Takes 5–10 minutes.
• Hardware included: Kit comes with new bolts, lock washers, and nuts. If your bolts are rusted, soak them with penetrating oil first to avoid stripping.
• Fitment gotcha: Some users report the cover’s hinge tab is slightly taller than OEM, requiring a gentle bend with pliers for smooth pivot. Test after tightening.
• Durability: The plastic is UV-stabilized but may crack if left in direct sun for years. Store the mower indoors or use a deck cover when not in use.

Should You Buy It

If you own a John Deere 42-inch lawn tractor (D100/LA series or similar) and need a direct replacement for a cracked or missing OEM chute cover, this is a solid budget option. It’s not for commercial use or heavy-duty abuse, but for weekly residential mowing, it works reliably and saves about 30% over the genuine John Deere part. Skip it if you have a newer X300 deck or a 48-inch/54-inch mower.