8TEN Gen 3 Electric PTO Clutch for Exmark Toro Warner Dixie Chopper 116-1620 5218-207 116-1604 500012 109-9282 5218-107

What It Is

The 8TEN Gen 3 Electric PTO Clutch engages and disengages your mower blades via an electromagnetic coil. It’s a direct-fit aftermarket replacement for select Exmark, Toro, Dixie Chopper, and other zero-turn mowers that use a 4-inch, 3-bolt, 17mm shaft PTO clutch.

Fitment & Compatibility

Before buying, confirm your mower uses the original OEM part numbers: 116-1620, 5218-207, 116-1604, 500012, 109-9282, or 5218-107. This clutch fits Exmark Lazer Z, Toro Z-Master, Dixie Chopper, and some Scag/Wright models with a 1-inch shaft diameter and 4-inch rotor. Measure your existing clutch’s bolt pattern—it must be 3-bolt, 3.25-inch bolt circle. Check that your pulley is not damaged and that your wiring harness uses a standard two-pin connector (no Deutsch or custom plugs). If your deck size is 48–72 inches, this will likely work, but always cross-reference your model number with 8TEN’s online fitment list.

Key Things to Know

• Quality: 8TEN’s Gen 3 uses a sealed bearing and double-row ball bearings, which are more durable than many budget clones. Expect 1,500–2,000 hours of typical residential use.
• Installation Difficulty: Moderate. Requires basic hand tools (wrenches, socket set) and a torque wrench for the center bolt (35–45 ft-lbs). You’ll need to remove the deck or access the clutch from below.
• Common Gotchas: The air gap (0.010–0.020 inches) must be set correctly after installation or the clutch will slip or drag. Also, the included hardware may not match your mower’s shaft—have your old bolts ready.
• Noise: Some users report a slight whine at engagement. This is normal for aftermarket clutches and usually fades after break-in.

Should You Buy It

If you need a reliable, affordable replacement for a worn OEM clutch on a commercial-grade zero-turn (Exmark, Toro, Dixie Chopper) and you’re comfortable with a simple swap, this is a solid choice. It’s not a premium OEM unit, but it’s a significant upgrade over generic no-name clutches and will save you $50–100. Skip it if you need a direct OEM warranty or have a mower with a non-standard shaft or wiring.