Replacement 4.75x2.63inch PTO Slip Clutch Friction Disc SW04542 Fits 147122 1402219 1804000 180.014.019 Clutches May be Suitable Other Brands 1334030 00786713 50047588 7001236(2 pcs)

What It Is

This is a set of two replacement friction discs (4.75 x 2.63 inches) for the PTO slip clutch on lawn tractors and zero-turn mowers. The discs transfer power from the engine to the mower deck and slip to protect the driveline if the blades hit an object. They fit SW04542-style clutches and are commonly used on brands like Husqvarna, Craftsman, Cub Cadet, and AYP.

Fitment & Compatibility

Before buying, verify these three things:

1. Clutch Model: This disc is designed for SW04542, 147122, 1402219, 1804000, and 180.014.019 clutches. It may also fit other brands that use the same 4.75" outer diameter (OD) and 2.63" inner diameter (ID) disc. Cross-reference your clutch model against the OEM part numbers: 1334030, 00786713, 50047588, 7001236.

2. Measure Your Disc: Confirm the OD (4.75") and ID (2.63") match your existing disc. Thickness can vary; stack the two discs to match the original stack height. If your clutch uses a single thick disc, this two-pack may not work.

3. Deck or Machine Fit: Common on 42–54 inch decks with electric PTO clutches. Not for manual PTO or older mechanical clutches. Check your mower’s model number against the OEM numbers above.

Key Things to Know

• Quality vs OEM: These are aftermarket discs. They work well for the price, but OEM discs may last longer under heavy use or commercial mowing.
• Installation Difficulty: Moderate. You’ll need to remove the PTO clutch, separate the halves, replace the disc(s), and re-torque to spec (typically 20–25 ft-lbs). A clutch puller and torque wrench are required.
• Common Gotcha: The disc must be fully seated and flat. A warped or misaligned disc causes vibration or premature wear. Also, replace the clutch bearings if they’re loose or noisy.
• Break-In: New discs may smoke or smell for the first few engagements. This is normal as they bed in.

Should You Buy It

If you have a compatible electric PTO clutch (SW04542 or similar) and need a budget-friendly fix for a slipping or worn-out clutch, this two-pack is a solid choice. It’s best for homeowners or light-duty users. For commercial mowing, consider OEM discs for longer life.