Husqvarna 46-in Tractor Mulch Kit

What It Is

The Husqvarna 46-in Tractor Mulch Kit is an OEM accessory that replaces the side-discharge chute and blade on compatible 46-inch cutting decks, allowing clippings to be recut and deposited as fine mulch rather than bagged or discharged.

Fitment & Compatibility

• Deck size: Fits only 46-inch (117 cm) Husqvarna mowing decks. Measure your deck width from blade tip to blade tip.
• Model/Brand fit: Designed for Husqvarna lawn tractors with a 46-inch stamped deck. Not compatible with Craftsman, John Deere, or other brands unless they share the same deck platform (rare). Check your owner’s manual for “mulch kit” part number 5324370-01 or 532437001.
• OEM vs Aftermarket: This is Husqvarna OEM. Aftermarket kits often cost less but may require additional hardware or not seal as tightly. OEM ensures exact fit.
• Measurements: The deck opening width is roughly 4–5 inches. The kit includes a mulch plug (covers discharge opening), a baffle plate, and hardware. If your deck has a side-discharge deflector, you’ll remove it to install the plug.

Key Things to Know

• Quality concerns: The 2.9/5 rating reflects reports of thin plastic that cracks after a season or two, especially in cold weather or if the plug is left on during storage.
• Installation difficulty: Moderate. You’ll need to remove the mower deck (or tilt it), unbolt the side-discharge chute, and install the plug and baffle. Expect 30–45 minutes if you’re handy; longer if you’ve never removed a deck.
• Common gotcha: The kit does not include a mulching blade—you’ll need to buy a separate mulching blade (Husqvarna part 5324370-02 or aftermarket equivalent) for best results. Using standard blades will leave clumps.
• Deck clearance: On some tractors, the plug can interfere with the deck lift linkage. Check for bolt-on clearance before tightening everything.

Should You Buy It

If you own a Husqvarna 46-inch tractor, want to reduce bagging trips, and don’t mow over two inches of wet grass, this kit works—but expect to replace the plastic plug every couple of seasons. For the same price, an aftermarket steel plug may last longer. Skip it if you’re on a tight budget or need a complete mulching system with a dedicated blade.