HiTorque 110ftlb (OEM 95) BIGBearing Billet Pulley Electric PTO Clutch 587241601 53594500 GT1A-EH07 GT1.5A-EH07 400008 Replaceable Bearing for Ogura Husqvarna Craftsman RedMax Poulan Jonsered Dixon

What It Is

This is an aftermarket electric PTO clutch pulley assembly that engages and disengages the mower blades, delivering a high torque rating of 110 ft-lbs (compared to the OEM 95 ft-lbs). It’s designed for zero-turn and riding mowers from Husqvarna, Craftsman, RedMax, Poulan, Jonsered, and Dixon that use Ogura-style clutches, and it features a replaceable bearing for extended service life.

Fitment & Compatibility

Before purchasing, verify these three things:

• OEM cross-reference: This replaces part numbers 587241601, 53594500, GT1A-EH07, GT1.5A-EH07, and 400008. Check your mower’s manual or existing clutch for these numbers.
• Physical measurements: The pulley diameter and shaft bore must match your mower’s crankshaft (typically 1-inch or 25mm). Measure your old clutch’s bolt pattern and overall diameter—this unit uses a standard 3-bolt pattern.
• Brand/deck size: Fits most 42-inch to 54-inch decks on the listed brands, but double-check your mower’s year and model (e.g., Husqvarna GT52LS, Craftsman GT5000). Not all variants are compatible; confirm fitment via online parts diagrams.

Key Things to Know

• Torque upgrade: The 110 ft-lb rating is about 15% stronger than OEM, which helps prevent slipping on heavy grass or wet conditions but may stress older belts/decks if used aggressively.
• Replaceable bearing: Unlike sealed OEM units, the bearing can be swapped when it wears out, saving you from buying a full clutch assembly later. Budget ~$15 for a replacement bearing.
• Installation difficulty: Moderate—requires removing the old clutch (often with a puller tool), wiring the two-wire harness, and torquing the center bolt to spec (typically 40-50 ft-lbs). No special electrical work needed if your mower uses a standard 12V signal.
• Common gotcha: Some users report the clutch may run slightly louder than OEM due to the billet construction. Ensure the air gap is set to 0.010-0.015 inches during install to avoid engagement issues.

Should You Buy It

Buy this if you own a compatible Husqvarna, Craftsman, or similar mower and want a stronger, longer-lasting PTO clutch with a serviceable bearing, especially if you mow tough terrain or need to replace a failed OEM unit. Skip it if you prefer a quieter operation or have a non-standard deck size—verify fitment first.