731-07131 Side Discharge Chute & 987-02516A Hinged Mulching Plug Assembly - Compatible with MTD Craftsman Troy-Bilt TB110, TB230, TB130 Lawn Mowers, Replacement for 731-7131 Easy Installation

What It Is

This bundle includes the 731-07131 side discharge chute and the 987-02516A hinged mulching plug for converting your mower between side-discharge and mulching modes. Designed for MTD-built push mowers like Craftsman, Troy-Bilt, and Yard Machines models in the TB100–TB230 series.

Fitment & Compatibility

Check these before buying:

• Deck size: Fits 21-inch stamped steel decks only. Not for 22-inch or fabricated decks.
• Model series: Compatible with TB110, TB130, TB230, and similar MTD platform mowers (Craftsman 625, 675 series, Yard Machines 11A-xxx). Verify your mower’s model number on the deck sticker.
• OEM vs aftermarket: This is an aftermarket set, not OEM MTD. The mulching plug uses a hinge design (OEM part 987-02516A), while the chute replaces OEM 731-7131. Holes and latch points match, but plastic thickness may be slightly less.
• Measurements: Chute opening is 6.5 x 4 inches; plug hinges at the rear discharge opening. If your mower has a fixed plug or a different latch style, this won’t fit.

Key Things to Know

• Installation: Tool-free—snap the chute into the discharge port, then clip the plug into the rear opening. The hinge on the plug lets you flip it up for bagging without removing it entirely.
• Quality: Plastic is functional but thinner than OEM; expect cracking if you hit rocks or curbs repeatedly. The hinge pin is plastic and can break if forced.
• Common gotcha: The mulching plug may not seal tightly on all decks, causing grass clippings to leak out the rear. Shimming with a rubber strip can help.
• Price vs OEM: At $21.99, it’s about half the cost of buying both OEM parts separately. Worth it if you’re on a budget and don’t need heavy-duty durability.

Should You Buy It

This bundle is a good value for homeowners with a TB100–TB230 series mower who want quick switching between mulching and side discharge without spending for OEM. If you mow rough terrain or need maximum durability, stick with genuine MTD parts. For light to moderate use on a standard lawn, this set works fine.