CUB CADET 19A70041100 Mulching Kit 42" Stamped Deck Star Center RZT SX XT1 XT2 ZT1 Ultima 42 S L

What It Is

The Cub Cadet 19A70041100 Mulching Kit converts your 42-inch stamped steel deck from side-discharge or bagging to a true mulching setup, chopping clippings into fine particles and returning them to the lawn as natural fertilizer. It’s designed specifically for Cub Cadet RZT, SX, XT1, XT2, ZT1, and Ultima 42 S L mowers with a star-center 42-inch stamped deck.

Fitment & Compatibility

• Deck size & type: Fits only 42-inch stamped (not fabricated) decks with a star-shaped spindle center. Measure your deck width and confirm the spindle center is a star pattern, not a spline or hex.
• Model compatibility: Works on Cub Cadet RZT, SX, XT1 Enduro Series, XT2 Enduro Series, ZT1, and Ultima 42 S L mowers. Not compatible with Z-Force, LT, or older series without a star-center stamped deck.
• OEM vs aftermarket: This is a genuine Cub Cadet OEM kit. Aftermarket versions may fit but often lack the precise baffle shape or hardware quality.
• Check your deck: Look under the mower for a stamped steel deck with a star-shaped spindle nut. If you have a fabricated (welded) deck or a different spindle pattern, this kit won’t work.

Key Things to Know

• Quality: OEM parts ensure proper fit and airflow. The baffle and blade are durable steel, but the paint can chip if installed too tightly. Tighten hardware to spec—over-torquing can warp the baffle.
• Installation difficulty: Moderate. You’ll need to remove the existing blades and side-discharge chute, then attach the mulching baffle and install the included mulching blades. Budget 30–60 minutes.
• Common gotchas: The kit replaces the standard blades with shorter mulching blades. If you mow tall or wet grass, you may need to slow down and mow more often to avoid clumping. Also, the baffle may not fit perfectly on decks with aftermarket blade adapters.
• Performance: Expect finer clippings than standard blades, but not as fine as a dedicated mulching mower. Works best with dry grass mowed at 2–3 inches height.

Should You Buy It

Buy this kit if you have a compatible Cub Cadet 42-inch stamped deck and want to reduce bagging frequency while returning nutrients to your lawn. It’s a solid OEM upgrade for $74—just be ready to mow more often and avoid wet grass for best results.