Mulch Kit Plate Cover Plug 46" with Blade for XT1-LT46 XT2-LX46 LTX1045 LTX1046 LTX1046VT LTX1050VT RZT-L46

What It Is

This mulch kit plate cover plug with blade is designed to convert a standard side-discharge mower deck into a mulching system. It fits 46-inch deck models including Cub Cadet XT1-LT46, XT2-LX46, LTX1045, LTX1046, LTX1046VT, LTX1050VT, and RZT-L46.

Fitment & Compatibility

Before buying, confirm your deck is exactly 46 inches (measure across the cutting width). This kit is for Cub Cadet and MTD-branded mowers with 46-inch stamped steel decks. It replaces OEM part numbers 490-110-0040 and 490-110-0039. Check that your spindle mounting pattern matches—most 46" Cub Cadet decks use a 3-hole, 3.5-inch center pattern. The included blade is 18.5 inches long with a 1-inch center hole and 0.25-inch star drive. If your deck has a different blade mount (e.g., oval hole), this won’t fit.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the discharge chute, install the plug plate under the deck, and swap the standard blade for the included mulching blade. Allow 30–45 minutes.
• Blade quality: The included blade is steel but not hardened; expect shorter lifespan than OEM or premium aftermarket blades. Some users report it dulls faster than factory blades.
• Deck clearance: The plug plate may reduce airflow under heavy grass. For best results, mow at higher deck settings and avoid cutting wet or tall grass.
• Hardware: The kit includes bolts and washers, but check your existing spindle hardware—some decks use different thread sizes (typically 5/16-24 or 3/8-24).

Should You Buy It

Buy this kit if you own a compatible Cub Cadet 46-inch deck and want an affordable mulching conversion without buying a full OEM kit. It’s a decent budget option for light residential use, but skip it if you mow frequently, have tough grass, or expect long blade life—invest in a higher-end mulching blade separately.