Clutch Pigtail Wire Harness 5218-251-001, 500062, 539105637, 71410019, 71410021, Compatible with Cub Cadet, MTD, Troy Bilt, Husqvarna, Craftsman, Exmark, John Deere, Rotary, Hustler Super Lawn Mower

What It Is

This clutch pigtail wire harness connects your lawn mower’s electrical system to the PTO (power take-off) clutch, supplying power to engage the blades. It’s a direct replacement for worn or broken harnesses on zero-turn, riding, and lawn tractors from Cub Cadet, MTD, Troy-Bilt, Husqvarna, Craftsman, Exmark, John Deere, Rotary, and Hustler.

Fitment & Compatibility

Before buying, confirm your mower’s model and deck size. This harness matches OEM part numbers 5218-251-001, 500062, 539105637, 71410019, and 71410021. It fits most 42- to 60-inch decks on the brands listed, but double-check your PTO clutch connector type (usually 2-pin flat or round). Measure the wire length—this harness is roughly 6–8 inches long. If your original has a different connector shape or length, it won’t work without modification. Always cross-reference your mower’s model number with the OEM part list.

Key Things to Know

• Quality: Aftermarket, but built from 14-gauge wire with heat-resistant insulation; rated 4.7/5 stars for durability.
• Installation: Simple swap—unplug old harness, plug in new one. No crimping or soldering needed. Takes 5–10 minutes.
• Common gotchas: Verify the connector orientation (some brands have a keyed tab). If your clutch has a different pin spacing (e.g., 0.250 vs. 0.187 inches), this won’t fit. Also, check for corrosion on the mower’s mating connector—clean it first.
• Tip: If your blades don’t engage after replacement, the clutch itself may be faulty, not the harness.

Should You Buy It

Yes, if your mower’s PTO harness is frayed, broken, or intermittent and you’ve confirmed fitment. At $8.88, it’s a cheap, easy fix for a common failure point. Skip it if your clutch connector is non-standard or the harness length is too short for your routing.