For MTD 687-06029 987-02516A Plug Assembly-Mulch Hinged with Hardware, 687-06029 for hinged mulch plug, for hinged mulch plug 21 inch 687-06029, for hinge mulch plug 687-06029, for mtd-687-06029

What It Is

The MTD 687-06029 is an OEM hinged mulch plug assembly that replaces the standard discharge chute cover on 21-inch MTD-brand walk-behind mowers. It redirects grass clippings back into the deck for finer mulching, eliminating the need for bagging.

Fitment & Compatibility

• Deck size: Designed specifically for 21-inch cutting decks. Will not fit 20-inch or 22-inch decks.
• Brands: Fits MTD, Cub Cadet, Troy-Bilt, Yard-Man, Yard Machines, and other MTD-owned brands using the same deck platform.
• OEM vs aftermarket: This is a genuine MTD part (OEM). Aftermarket versions exist but often lack the precise hinge alignment and hardware quality.
• Measurements: Overall width of the plug face is roughly 10.5 inches. The hinge pin diameter is 0.25 inches. Check your existing plug width and hinge pin holes before ordering.
• Cross-reference numbers: Also replaces 987-02516A and 687-06029 (same part, different packaging).

Key Things to Know

• Installation difficulty: Easy. Requires removing the old chute cover, inserting the hinge pin through the plug and deck bracket, and securing with the included hairpin clip. No tools needed.
• Hardware included: Comes with the plastic plug, hinge pin, and retaining clip. If you lose the clip, a standard 1/4-inch cotter pin works as a backup.
• Common gotcha: The hinge pin can be tight to insert. Lightly lubricate with WD-40 or silicone spray if it resists. Do not force it or the plastic ears may crack.
• Quality: Durable ABS plastic. Holds up well to UV and impacts, but the hinge pin can rust if left exposed to moisture. Clean and dry after wet mowing.

Should You Buy It

If you own a 21-inch MTD-series mower and want to convert from side-discharge to mulching without buying a full mulching kit, this plug is the right fix. It’s cheap, easy to install, and OEM quality ensures a snug fit. Skip it if your deck has a different hinge design or if you need a full mulching blade kit (this is only the plug).