Hinged Mulch Plug Replacement for Craftsman, Troy-Bilt & MTD – Fits Mower Decks Requiring 987-02516, 987-02516A, 687-02516, 687-02516A

What It Is

This hinged mulch plug replaces the discharge chute or bagger adapter on select Craftsman, Troy-Bilt, and MTD walk-behind mowers. It blocks the side-discharge opening so grass clippings recirculate under the deck for finer mulching, eliminating the need to manually swap plugs.

Fitment & Compatibility

Before buying, confirm your mower deck uses one of these OEM part numbers: 987-02516, 987-02516A, 687-02516, or 687-02516A. This plug fits most 21- to 22-inch steel decks on MTD-built push mowers (models from ~2000 onward). Check your owner’s manual or existing plug for a stamped number. Measure the discharge opening width—this plug is designed for openings roughly 3.5 x 5 inches. It will not fit decks requiring a two-piece or solid (non-hinged) plug, nor decks with a separate mulch door latch.

Key Things to Know

• Hinge design is a mixed bag – The integrated hinge lets you flip the plug open/closed without removing it, but the plastic hinge pin can snap if forced or if the plug is left in the open position while mowing.
• Installation is tool-free – Align the plug over the discharge opening, push the hinge pin through the deck’s pre-drilled holes, and snap the retaining clip. Takes under 2 minutes.
• Check for deck rust – If the hinge pin holes are corroded or enlarged, the plug may wobble or fall out. Clean holes with a wire brush before installing.
• Mulching performance depends on blade – For best results, pair with a dedicated mulching blade (sold separately). This plug alone won’t improve cut quality if your blade is dull or a standard lift blade.

Should You Buy It

If you have a compatible MTD/Craftsman/Troy-Bilt mower with a worn or missing mulch plug, this is a solid, affordable fix. The hinge is convenient for switching between bagging and mulching, but the plastic pin means it’s not indestructible—handle it gently. Best for homeowners with a single mower who want quick mulching without buying a full conversion kit.