Karbay GY21773 GY21084 GX22456 GY21084C L/RH Shield Kit for J-OHN Deere 42" Mower Decks 107S, D100, D105, D110, D120, D125, D130 and More Mower Package includ Screws

What It Is

This Karbay shield kit replaces the left and right side discharge shields (OEM GY21773, GY21084, GX22456, GY21084C) on John Deere 42-inch mower decks. It prevents debris and grass clippings from spraying sideways during operation, directing them downward for safer mulching or bagging.

Fitment & Compatibility

Critical check: This kit fits only John Deere 42-inch (107 cm) stamped steel decks used on select 100-series tractors. Compatible models include: 107S, D100, D105, D110, D120, D125, D130. Also fits L100, L110, L120, L130, and some LX series with the same 42" deck. Not compatible with 48", 54", or any fabricated deck.

Before buying:

• Measure your deck width (42" edge to edge).
• Confirm your OEM part numbers: GY21773 (left), GY21084 (right), GX22456, or GY21084C.
• Kit includes mounting screws—no extra hardware needed.

Key Things to Know

• Material: Steel with black powder coating—holds up well but can rust if scratches occur. Not heavy-duty.
• Installation: Easy, 15-20 minutes. Remove two bolts per side, replace shield, reinstall. No drilling or mods needed.
• Common gotcha: The included screws are slightly shorter than OEM on some decks. If threads don’t catch, reuse original bolts.
• Fit note: May require slight bending of the shield tab to align with deck mounting holes on older decks (pre-2010).

Should You Buy It

Yes, if your original shields are cracked, missing, or bent and you want a direct, affordable replacement without hunting used OEM parts. It’s not heavy-duty steel, but it works for standard residential mowing. Skip it if you need commercial-grade durability or have a different deck size.