HD Switch HiTorque 300ftlbs (OEM 250) Blade PTO Clutch 71410027 BIGBearing C3 Upgrade fits Wright Stander Ogura ZK WSZK Mowers 52" WSZK52 61" WSZK61 72" WSZK72 - Replaceable Wire Harness

What It Is

This is a heavy-duty PTO (power take-off) blade clutch that engages and disengages the mower blades. It’s designed for Wright Stander ZK series zero-turn mowers with 52", 61", or 72" decks, delivering 300 ft-lbs of torque (upgraded from OEM 250 ft-lbs) and featuring a C3-grade larger bearing for higher load capacity.

Fitment & Compatibility

Before buying, verify your mower model: this clutch fits Wright Stander models WSZK52, WSZK61, and WSZK72 (2020+). It replaces OEM part 71410027, which is used on Wright ZK mowers with Ogura ZK-style clutches. Check your deck size and pulley width—confirm your current clutch measures the same shaft diameter (typically 1" or 25mm) and bolt pattern (3-bolt or 4-bolt). Also ensure your wire harness plug matches; this clutch has a replaceable harness, so if your existing harness is damaged, you can swap it without replacing the whole clutch. Not compatible with older Wright models using different clutch brands (e.g., Warner or Electromagnetic).

Key Things to Know

• Torque upgrade: The 300 ft-lb rating (vs. OEM 250) means stronger engagement and less slip under heavy grass or wet conditions.
• C3 bearing: The larger bearing reduces heat buildup and extends lifespan, especially on wider decks (72") that stress the clutch more.
• Installation difficulty: Moderate—requires removing the deck, disconnecting the harness, and unbolting the old clutch. You’ll need a puller tool to remove the pulley if stuck. Expect 1–2 hours for a first-time install.
• Replaceable harness: A common failure point on OEM clutches is the wire harness. This design lets you replace just the harness (sold separately) instead of the entire clutch, saving money long-term.

Should You Buy It

Buy this if you own a Wright Stander ZK mower (52"–72" deck) and want a stronger, more durable clutch than the OEM unit—especially if you mow thick grass, use a bagger, or have had previous clutch failures. It’s a premium upgrade for commercial or heavy residential use, but skip it if your mower uses a different clutch type or if you’re on a tight budget—the OEM version may suffice for light duty.