SCITOO PTO Clutch Fit for CUB Cadet LT1042 LT1045 LT1046 LT1050 SLT1550 Electric Lawn Mower

What It Is

The SCITOO PTO clutch is an aftermarket electric clutch that engages and disengages your mower deck blades on command. It replaces the factory clutch on specific Cub Cadet lawn tractors, typically when the original fails (won’t engage, slips, or makes grinding noises).

Fitment & Compatibility

Before buying, verify your mower’s model number (e.g., LT1042, LT1045, LT1046, LT1050, SLT1550) and deck size—this clutch fits 42” to 50” decks on those models. Check the OEM part number it replaces (common cross-references: 717-05134, 917-05134, 759-05134). Measure your original clutch’s bolt pattern (typically 3-bolt, 4” spacing) and shaft diameter (usually 5/8” or 7/8”). The SCITOO unit is a 12V, 2-wire design—confirm your tractor uses the same wiring connector type (flat spade terminals). If your mower has a different deck, engine, or older chassis variant, this clutch may not fit.

Key Things to Know

• Quality variance: At this price, it’s a budget replacement. Some users report shorter lifespan than OEM (1–3 seasons vs. 5+), but many get solid performance for the cost.
• Installation difficulty: Moderate. You’ll need basic tools (wrenches, socket set, puller if the old clutch is seized). Allow 1–2 hours. Disconnect the battery first.
• Common gotchas: The included wiring harness may need minor trimming or splicing to match your tractor’s plug. Also, the air gap is pre-set—do not adjust it unless you have a feeler gauge and spec (typically 0.012”–0.020”).
• Bearing noise: A few reviews mention a faint whine after installation; this is usually normal for aftermarket clutches but can indicate misalignment.

Should You Buy It

Buy this if you need a quick, affordable fix for a dead PTO clutch on a Cub Cadet LT series and you’re comfortable with basic mechanical work. Skip it if you want OEM longevity, have a rare model not listed, or prefer a plug-and-play swap with zero wiring adjustments—in those cases, spend more on a genuine Cub Cadet clutch.