MTD Genuine Parts Mulch Kit - For 46-Inch Mowers and Lawn Tractors (2010 and After) - Fits Troy-Bilt, Yard Machines, and Other Models, (19B30005OEM)

What It Is

This MTD Genuine Parts Mulch Kit (19B30005OEM) converts a 46-inch side-discharge or bagging mower deck into a mulching system, recutting grass clippings into fine particles that decompose back into the lawn. Designed for 2010-and-later MTD-built lawn tractors from Troy-Bilt, Yard Machines, and similar brands.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 46 inches (measured blade tip to blade tip) and was built in 2010 or after. This kit fits MTD, Troy-Bilt, Yard Machines, Cub Cadet, and Craftsman models with 46-inch stamped or fabricated decks from that era. Check your tractor’s model number (under seat or frame) against MTD’s compatibility list—this is not universal for all 46-inch decks. The kit includes a deck plate, mulch blades, and hardware; it will not fit older pre-2010 decks without modification. Measure your deck mounting holes and blade spindle spacing if unsure—aftermarket decks may vary.

Key Things to Know

• Quality: Genuine MTD OEM parts offer better fit and durability than generic aftermarket kits—blades are pre-balanced and the plate seals correctly.
• Installation: Moderate difficulty—requires removing the deck, swapping blades, and bolting on the mulch plate. Plan 1–2 hours, basic tools (socket set, jack stands).
• Common gotcha: This kit replaces standard blades with mulching blades—do not mix with bagging or side-discharge blades. The deck plate must be fully flush against the deck to avoid clumping.
• Performance: Works best on dry, short grass (under 3 inches). Wet or tall grass will clog—you’ll need to slow down or make multiple passes.

Should You Buy It

Buy this if you have a 2010-or-later MTD-built 46-inch tractor (Troy-Bilt, Yard Machines, Cub Cadet, Craftsman) and want to eliminate bagging—it’s a solid OEM upgrade that saves time and returns nutrients to your lawn. Skip it if you regularly cut wet grass, have a pre-2010 deck, or prefer side-discharge for tall growth.