134149 Mulching Blades for Craftsman 42" Deck Mower  | Poulan Pro Husqvarna 42" Deck Riding Lawn Mower LT2000 LT1000 Replace 532138971 532134149 138498 (2 Pack)

What It Is

This is a 2-pack of mulching blades (OEM equivalent part numbers 134149, 138971, 138498) designed for 42-inch cutting decks on Craftsman, Poulan Pro, and Husqvarna riding mowers. Mulching blades feature a curved, high-lift design to recut grass clippings into fine particles that decompose quickly, eliminating the need for bagging.

Fitment & Compatibility

Before buying, verify three things:

1. Deck size: These blades fit only 42-inch decks—not 46", 48", or 54" models.
2. Mower brand/model: Confirmed fit for Craftsman LT1000, LT2000, Poulan Pro, and Husqvarna riders with 42" decks (e.g., YTH22V46, GT42). Check your owner’s manual or current blade part number (532138971, 532134149, or 138498) for cross-reference.
3. Measurements: Blade length is 20.5 inches center-to-center (from mounting hole to mounting hole), with a 1-inch diameter center hole and a 0.625-inch (5/8") thickness. The oval center hole fits standard Craftsman/Poulan spindles—not universal or offset-hole designs.

Key Things to Know

• Quality: Aftermarket blades (not OEM) but made from heat-treated carbon steel with a hardened edge. Expect 1–2 seasons of normal use on residential lawns.
• Installation difficulty: Easy—just remove the center bolt, swap blades, and torque to 40–60 ft-lbs. Always lift the deck and disconnect the spark plug first.
• Common gotchas: Mulching blades require a clean, dry deck and sharp edges for fine clippings. Dull blades tear grass instead of cutting. Also, these are not compatible with bagging or side-discharge decks unless you switch to standard lift blades.
• Pack size: You get two blades, enough for one full deck replacement (most 42" decks use two blades).

Should You Buy It

Buy this if you own a Craftsman, Poulan Pro, or Husqvarna 42" deck rider and want an affordable, drop-in mulching upgrade for a cleaner, nutrient-rich lawn. Avoid if you need OEM-branded parts or plan to use a bagging system—these are strictly for mulching.