Electric PTO Clutch for Craftsman Cub Cadet MTD RZT42 RZT50 917-04622 717-04183 5219-99 917-04183

What It Is

This electric PTO (power take-off) clutch engages and disengages the mower blades on your lawn tractor. It’s designed for Craftsman, Cub Cadet, and MTD zero-turn and riding mowers, specifically models like the RZT42 and RZT50 that use a 12-volt electric clutch system.

Fitment & Compatibility

Before buying, verify these three things:

• Model & OEM numbers – Cross-check your mower’s model number against the listed OEMs: 917-04622, 717-04183, 5219-99, 917-04183. This clutch fits many Craftsman, Cub Cadet, and MTD tractors with 42” or 50” decks, but not all.
• Physical measurements – Measure the clutch’s bolt pattern (typically 3-bolt, 4.5” spacing) and shaft diameter (usually 1” or 1-1/8”). Compare to your old clutch. Aftermarket versions may vary slightly; measure your original.
• Voltage & wiring – Confirm your mower uses a 12V DC system and that the wiring harness connector matches (most use a 2-pin flat plug).

Key Things to Know

• Quality vs OEM – This is an aftermarket replacement, not factory Cub Cadet. It’s generally reliable for the price, but some users report shorter lifespan than OEM (2–3 seasons vs 4–5).
• Installation difficulty – Moderate. You’ll need basic hand tools (socket set, screwdrivers), a jack to lift the mower, and about 1–2 hours. No special skills, but be careful with the wiring and belt alignment.
• Common gotcha – The clutch must be properly shimmed to the crankshaft. If it’s too tight or loose, it can slip or burn out. Use the included shims and check the air gap (0.010–0.015”) with a feeler gauge.
• Warranty – Most aftermarket clutches come with a 1-year limited warranty. Check the seller’s return policy before buying.

Should You Buy It

This clutch is a solid budget choice if you’re replacing a failed OEM unit on a mid-range mower (Craftsman/Cub Cadet RZT42/50) and want to save 30–50% over a genuine Cub Cadet part. It’s not for heavy commercial use—stick with OEM if you mow 5+ acres weekly or need maximum durability. For homeowners with 1–2 acres, it’s a good value.