Mower Chute Blocker Fits Zero Turn Exmark, Gravely, Hustler,Kubota,Scag 52", 60", 72" Replaces ACS6000ULS Advanced Chute System 088-6003-00, Includes Discharge Shield

What It Is

This mower chute blocker replaces the OEM Advanced Chute System (ACS6000ULS / 088-6003-00) and is designed for zero-turn mowers with 52", 60", or 72" decks. It mounts below the discharge opening to block debris from ejecting sideways, and includes a built-in discharge shield for compliance and safety.

Fitment & Compatibility

Before buying, confirm these three things:

1. Deck size: Works only with 52", 60", or 72" decks. Measure your deck width (cutting width, not overall width) to verify.

2. Brand/model fit: Fits Exmark, Gravely, Hustler, Kubota, and Scag zero-turn mowers. But not all models within those brands—check that your deck has the mounting holes for a chute blocker (typically two bolt holes on the deck skirt near the discharge). If your mower came with a factory chute blocker, it will likely fit. If not, you may need to drill holes.

3. OEM replacement: This replaces the Exmark ACS6000ULS and part number 088-6003-00. If your original part number matches, it’s a direct swap.

What to measure: The mounting bracket spacing—most zero-turn decks use a standard 5.5" to 6" center-to-center bolt pattern, but verify yours. Also check that the chute blocker’s width (about 10" across the shield) doesn’t interfere with your deck’s belt guard or idler pulley.

Key Things to Know

• Quality: Users report the plastic shield is sturdy but not as thick as OEM. It holds up to normal residential use but may crack if you hit solid objects (rocks, roots) repeatedly.
• Installation difficulty: Easy—takes 10–20 minutes. Requires two bolts (usually 3/8" or 5/16"), a socket wrench, and possibly a drill if your deck lacks pre-drilled holes. No special tools.
• Common gotcha: The included hardware may be too short for some decks with thick steel or added reinforcement. Have a set of longer 3/8" bolts on hand just in case.
• Fitment note: On some 72" decks, the blocker may sit slightly lower than OEM, reducing ground clearance by about 1/2". Check that it won’t drag on grass or gravel.

Should You Buy It

Buy this if you need a budget-friendly replacement for a worn or missing OEM chute blocker on a 52", 60", or 72" zero-turn from Exmark, Gravely, Hustler, Kubota, or Scag—and you’re comfortable with a slight clearance trade-off on larger decks. Skip it if you need exact OEM fitment for a commercial-grade mower used in heavy debris or rocky terrain, where a thicker OEM shield is worth the extra cost.