8TEN Gen 3 Electric PTO Clutch for Exmark Toro Ariens Gravely Warner 126-4323 126-8925 05118900 59118500 5219-200 5219-204

What It Is

The 8TEN Gen 3 Electric PTO Clutch is an aftermarket replacement for the Warner electric clutch assembly that engages the mower blades on zero-turn and riding mowers. It’s designed to fit Exmark, Toro, Ariens, and Gravely machines that originally used OEM part numbers 126-4323, 126-8925, 05118900, 59118500, 5219-200, or 5219-204.

Fitment & Compatibility

Before buying, confirm your mower uses a Warner-style 5.5-inch diameter clutch with a 1-inch shaft bore and a 3-bolt mounting pattern. This clutch is not universal—check your owner’s manual or existing clutch for the exact OEM number. Common compatible models include Exmark Lazer Z and Toro Z-Master series, but not all variants. Measure the shaft diameter and bolt spacing on your old unit; mismatched bolt patterns or shaft sizes will prevent installation. Also verify electrical connector type—this clutch uses a standard two-pin flat connector, but some older machines may need an adapter.

Key Things to Know

• Quality concerns: With a 3.4/5 rating from only 5 reviews, reports of premature bearing failure or electrical shorts are possible. This is a budget aftermarket part—expect shorter lifespan than OEM Warner or Ogura units.
• Installation difficulty: Moderate. You’ll need a puller to remove the old clutch from the shaft and a torque wrench to tighten the center bolt to spec (typically 40–50 ft-lbs). The air gap must be set to 0.010–0.015 inches using feeler gauges.
• Common gotchas: The included hardware may not match your machine’s bolt threads. Check that the pulley groove width matches your belt—some users report belt slippage if the groove is slightly narrow. Also, the clutch may require a break-in period of 30 minutes under light load to prevent overheating.
• Warranty: Usually 1-year limited, but read the fine print—some sellers exclude labor or shipping costs.

Should You Buy It

Buy this only if you need a low-cost, quick fix and are comfortable with potential early failure or installation tweaks. If your mower is used commercially or you want reliability, spend more on an OEM Warner or Ogura clutch (typically $200–$300). For a weekend homeowner mower on a tight budget, this may work, but manage expectations on longevity.