Electric PTO Clutch for Cub Cadet RZT50 RZT42, Replacement Cub Cadet PTO Clutch, Replaces OEM 917-04622, 717-04183, 717-04622, 917-04183, Troy Bilt & Warner 5219-99

What It Is

This is an electric PTO (power take-off) clutch that engages and disengages the mower blades on your lawn tractor. Designed for Cub Cadet RZT50 and RZT42 zero-turn mowers, it replaces multiple OEM part numbers and fits select Troy-Bilt and Warner models.

Fitment & Compatibility

Check these before buying:

• Model: Fits Cub Cadet RZT50 and RZT42 (zero-turn mowers with 50-inch and 42-inch decks). Also fits some Troy-Bilt and Warner applications using the same clutch.
• OEM replacements: Confirmed to replace OEM #s 917-04622, 717-04183, 717-04622, 917-04183, and Warner 5219-99.
• Physical measurements: Clutch diameter is approximately 4.5 inches; shaft bore is 1 inch (25.4mm) with a 3/16-inch keyway. Verify your existing clutch matches these specs.
• Electrical: 12V DC, two-wire connector. Ensure your mower’s wiring harness matches the blade-type terminals.
• Mounting: Three-bolt pattern on 4.25-inch center spacing. Confirm bolt pattern aligns with your engine or frame bracket.

Key Things to Know

• Quality: Aftermarket unit, not OEM Cub Cadet. Most users report it works well, but some note slightly different engagement noise or feel compared to original.
• Installation: Moderate difficulty. Requires removing the mower deck and accessing the clutch on the engine crankshaft. You’ll need a puller tool to remove the old clutch and a torque wrench (25-35 ft-lbs for the center bolt).
• Common gotchas: The clutch may need a 0.010-0.015 inch air gap adjustment between the rotor and armature plate after installation. Check with a feeler gauge. Also, ensure the keyway aligns correctly or the clutch won’t spin true.
• Wiring: Polarity doesn’t matter (it’s a DC coil), but verify your connector matches the blade size (usually 0.25-inch). Splicing may be needed if different.

Should You Buy It

If you need a budget-friendly replacement for your Cub Cadet RZT50 or RZT42 PTO clutch and you’re comfortable with a moderate DIY install (including gap adjustment), this is a solid choice. It’s not OEM, but it’s a fraction of the dealer price and works reliably for most users. Skip it if you want a perfect fit or have a different model not listed in the compatibility notes.