MTD Genuine Parts MTD OEM 19A70041OEM Mulching Kit for 42" Lawn Tractors & RZT Mowers Black

What It Is

This MTD OEM mulching kit converts a 42-inch lawn tractor or RZT zero-turn mower from side-discharge or bagging to a mulching system. It recirculates clippings inside the deck for finer cutting that decomposes quickly, eliminating the need to bag.

Fitment & Compatibility

Before buying, confirm your deck is exactly 42 inches. This kit fits MTD, Cub Cadet, Troy-Bilt, and Yard Machines tractors and RZT mowers with an MTD-style 42-inch fabricated or stamped deck. Check your model number against MTD’s fitment list (available on their site) for the 19A70041OEM – common compatible series include 13A, 13B, 13C, 13D, 13P, and 13W. Avoid aftermarket “universal” kits; this OEM part ensures bolt-hole alignment and blade shape match. Measure your deck’s spindle spacing and blade bolt pattern (typically 3.5-inch center-to-center) if unsure.

Key Things to Know

• Quality: OEM MTD parts are heavy-gauge steel with powder coating – resists rust and holds up better than generic kits.
• Installation: Moderate difficulty (30–60 minutes). Requires removing the deck, swapping blades for the included mulching blades, and bolting on the baffle kit. A socket set and jack or ramps help.
• Gotcha: Check your deck’s under-belly clearance – some older models may need a spacer (sold separately) to prevent blade contact with the baffle.
• Performance: Works best with dry grass; wet or tall grass clogs the deck. Sharpen mulching blades annually.

Should You Buy It

If you own a compatible 42-inch MTD-family tractor or RZT and want cleaner mulching without bagging, this kit is a solid OEM upgrade. It’s pricier than generic options, but the fit is exact and the build quality justifies the cost for frequent mowers. Skip it if you always bag or have a non-MTD deck.