The ROP Shop Electric PTO Clutch for Warner 5218-32 Shaft Size 1 inch, Belt Type A/B, Pulley Diameter 6 inch Torque

What It Is

The ROP Shop Electric PTO Clutch engages and disengages the mower blade on riding lawn mowers and tractors. It is designed for use with Warner 5218-32 specifications, featuring a 1-inch shaft, A/B belt type, and a 6-inch pulley diameter.

Fitment & Compatibility

Before buying, verify these three things:

• Shaft Size: Must be exactly 1 inch. Measure your mower’s crankshaft or PTO shaft with a caliper—not a ruler.
• Pulley Diameter: 6 inches. Check your old clutch pulley for the same measurement; mismatched size affects belt tension and blade speed.
• Belt Type: Accepts both A and B belts. Confirm your mower uses one of these (A is 1/2” wide, B is 5/8” wide).
• Wiring & Mounting: This is an aftermarket replacement for Warner 5218-32. It fits many brands (e.g., MTD, Cub Cadet, Husqvarna) but not all. Check your mower’s model number against ROP’s fitment list online. Bolt pattern and electrical connector may differ—measure bolt spacing and compare wire colors.
• OEM vs Aftermarket: This is not OEM; it’s a direct replacement for Warner units. If your original is a different brand (e.g., Ogura or Hilliard), confirm physical and electrical match.

Key Things to Know

• Quality: Rated 5.0/5 from 3 reviews—limited feedback. ROP is a known aftermarket supplier, but expect possible minor fitment tweaks (e.g., shimming or wire splicing).
• Installation Difficulty: Moderate. Requires basic tools (wrenches, multimeter) and mechanical skill. You’ll need to remove the old clutch, align the new one, adjust air gap (typically 0.010-0.020”), and wire it correctly.
• Common Gotchas: The pulley may not be perfectly balanced—check for wobble after install. Also, the included wiring harness might need adapter plugs for some mowers. Always test engagement with the engine off before full use.
• Torque Specs: Tighten the center bolt to manufacturer specs (usually 30-50 ft-lbs). Over-tightening can warp the pulley.

Should You Buy It

Buy this if you have a Warner 5218-32 clutch failure, need a budget-friendly replacement (under $140), and are comfortable with minor aftermarket adjustments. It’s a solid value for DIYers with a compatible mower, but skip it if you want a guaranteed plug-and-play OEM part or lack installation experience.