AMP4200 Mower Mulch Plug Compatible with EGO Power 42" Z6 T6 Zero Turn Riding Mower ZT4204L, TR4200 and TR4204

What It Is

The AMP4200 Mower Mulch Plug is an aftermarket accessory designed to block the side discharge chute on compatible EGO zero-turn mowers, forcing grass clippings to recirculate under the deck for finer mulching. It’s intended for use on 42-inch decks when you want a cleaner cut and natural lawn fertilization without bagging.

Fitment & Compatibility

• Exact models: Fits EGO Power 42" Z6 T6 Zero Turn (ZT4204L) and the TR4200/TR4204 tractors. Verify your deck size is exactly 42 inches—this plug will not work on 52" or 36" decks.
• OEM vs aftermarket: This is a third-party part, not EGO-branded. It should match the OEM mounting holes, but check that your deck has the side-discharge chute opening and the two spring-loaded latch pins. If your mower has a different chute design (e.g., rear discharge), it won’t fit.
• Measurements: The plug’s dimensions are roughly 10" x 4" x 3". Measure your chute opening width and height to confirm it will seat tightly. The plug uses rubber gaskets—ensure they align with the chute flange for a seal.

Key Things to Know

• Installation difficulty: Easy—no tools required. Snap the plug into the chute opening until the latch pins click. Remove by pulling the release tabs. Expect about 2 minutes.
• Quality notes: Made from hard plastic with rubber gaskets. Some users report the gaskets can warp in heat or after repeated removal, leading to air leaks and reduced mulching efficiency. Inspect the gaskets before each use.
• Common gotcha: The plug may not seal perfectly if your deck’s chute has debris buildup or bent edges. Clean the chute area thoroughly before installing. Also, never operate with the plug in place while bagging—it will clog the deck.
• Performance: Works well for dry, short grass (under 3 inches). Tall, wet grass can cause clumping and leave clippings on the lawn. You may need to slow your mowing speed.

Should You Buy It

If you own one of the listed EGO zero-turn models and want a low-cost way to convert from side-discharge to mulching, this plug is a solid buy—just keep expectations realistic for wet or tall grass. It’s ideal for occasional mulching on well-maintained lawns. If you need heavy-duty mulching or a perfect OEM fit, consider the EGO-branded kit instead.