Xtreme Outdoor Power Equipment X0390 PTO Clutch Compatible with/Replacement for Cub Cadet FMZ50, LTX1042, LTX1045, LTX1046, LTX1050, RZT50, RZT54 and Z Force S Series, MTD FMZ50, LTX1042 717-04552

What It Is

The Xtreme Outdoor Power Equipment X0390 PTO clutch is an electric engagement clutch that drives the mower blades on select Cub Cadet and MTD zero-turn and lawn tractors. It’s a direct replacement for the OEM part 717-04552, designed for residential and light commercial use.

Fitment & Compatibility

Before buying, verify these three things:

• Model number – Fits Cub Cadet FMZ50, LTX1042, LTX1045, LTX1046, LTX1050, RZT50, RZT54, and Z Force S Series, plus MTD FMZ50 and LTX1042. Double-check your mower’s model tag (under seat or on frame).
• OEM part number – Replaces 717-04552. If your original clutch has a different number, measure the shaft diameter and bolt pattern (typically 1-inch shaft, 3-bolt pattern).
• Deck size – Works with 42–54 inch decks; confirm your deck size matches the listed models (e.g., LTX1042 = 42-inch deck, RZT54 = 54-inch).

This is an aftermarket clutch. It’s not OEM Cub Cadet, but it’s built to identical specs.

Key Things to Know

• Quality – Rated 4.9/5 from 28 reviews; users report it lasts as long as OEM at about half the price. Expect 300–500 hours in residential use.
• Installation – Moderate difficulty. You’ll need basic hand tools (socket set, wrench) and a puller to remove the old clutch from the crankshaft. Allow 1–2 hours.
• Gotcha – The clutch comes with a new bearing, but you must reuse your original bolts/washers. Check for stripped threads on the crankshaft before installing.
• Electrical – Ensure the wiring harness connector matches your mower. Some Cub Cadet models use a 2-pin flat connector; this clutch includes a compatible plug.

Should You Buy It

Buy this if you need a reliable, budget-friendly replacement for a failed PTO clutch on a listed Cub Cadet or MTD model and are comfortable with a DIY installation. Skip it if you want an OEM part for warranty reasons or if your mower uses a different shaft size or bolt pattern.