HD Switch BIGBearing HiTorque 210ftlb Billet Pulley Electric Blade PTO Clutch fits Spartan 470-0002-00 Warner 5218-242 OEM Upgrade w/Larger Replaceable Pulley Bearing Lawn Mower Clutch 5218242

What It Is

This is a heavy-duty electric blade engagement clutch (PTO clutch) designed to replace OEM units on Spartan mowers and compatible zero-turn models. It delivers 210 ft-lb of torque via a billet pulley with a larger, replaceable bearing—built for commercial-grade mowing where stock clutches fail prematurely.

Fitment & Compatibility

• Direct replacement for: Spartan 470-0002-00 and Warner 5218-242 (also listed as 5218242).
• Check before buying: Measure the pulley diameter (this is a billet upgrade, typically 5”–5.5” OD) and confirm belt width matches your deck’s PTO belt (usually 1/2” or 5/8”). Verify spindle shaft size—most Spartan zero-turns use a 1” shaft with a 3/16” keyway, but measure yours.
• Deck size: Works on 48”–72” decks, but confirm belt routing and clearance for the larger pulley.
• Electrical: 12V DC, 2-wire connector. Ensure your mower’s wiring harness matches (often a flat 2-pin Weather Pack style). If not, you may need an adapter or splice.

Key Things to Know

• Torque upgrade: The 210 ft-lb rating is significantly higher than OEM (typically 150–180 ft-lb). This reduces belt slip under heavy grass loads but may increase strain on the deck’s spindle bearings over time.
• Replaceable bearing: Unlike many sealed OEM clutches, this unit allows bearing replacement without tossing the whole clutch—saves money long-term.
• Installation: Moderate difficulty—requires removing the deck, disconnecting the old clutch (usually 3 bolts), and transferring the key and washer. No special tools beyond a socket set and torque wrench (specs: 30–40 ft-lb on mounting bolts).
• Common gotcha: The billet pulley is heavier than stock—check that your deck’s PTO belt tensioner can handle the extra mass without bouncing. Also verify the pulley’s flat face isn’t interfering with the belt guard.

Should You Buy It

Buy this if you own a Spartan zero-turn with a failing OEM clutch, especially if you mow thick or wet grass that causes belt slip. It’s overkill for light residential use but a smart upgrade for commercial operators who want a rebuildable, higher-torque clutch that outlasts the factory part. Skip it if your deck has tight belt clearance or you’re on a budget—the $250 price is justified only for heavy-duty needs.