LOSTAR 631-05195 Tractor Mulch Cover Compatible with MTD 42" / 46" Decks Cub Cadet RZT-42 Troy-Bilt TB46 Craftsman T2100 Lawn Tractors 19A30046100 for 2012 and After

What It Is

The LOSTAR 631-05195 is an aftermarket mulch cover designed to block the grass discharge chute on select MTD-built lawn tractors, converting side-discharge mowers into mulching mowers. It fits MTD 42-inch and 46-inch decks, including Cub Cadet RZT-42, Troy-Bilt TB46, and Craftsman T2100 models from 2012 onward.

Fitment & Compatibility

Before buying, confirm your deck size (42" or 46") and that the cover’s mounting holes align with your mower’s existing chute bracket. This part replaces OEM number 631-05195 and works with MTD, Cub Cadet, Troy-Bilt, and Craftsman models listed in the title. Check that your mower was built after 2012—earlier decks may have different bracket spacing. Measure the distance between the two mounting holes on your current chute (typically 3.5–4 inches apart) to ensure compatibility. This cover does not fit zero-turn decks with integrated chute designs or older Craftsman models with a different bracket system.

Key Things to Know

• Quality vs. OEM: The LOSTAR is a steel cover with a black powder coat, but some users report thinner metal than the OEM part. It may rust faster if stored outdoors.
• Installation: Easy—remove two bolts from the existing chute, attach the cover, and tighten. No drilling or modifications needed. Takes about 5 minutes.
• Common Gotcha: The cover may vibrate loose over time; apply thread locker or check bolts seasonally. Also, it can slightly reduce bagging capacity if you switch between mulching and bagging.
• Performance: Works well for mulching leaves and grass clippings, but may not seal as tightly as OEM, leading to minor clumping in wet grass.

Should You Buy It

Buy this if you have a compatible MTD/Cub Cadet/Troy-Bilt mower from 2012 or later and want a budget-friendly way to mulch without buying a dedicated mulching kit. It’s a solid value at $26.50, but if you need a perfect seal or plan to use it heavily, consider spending more on an OEM part.