Terre Products, 2 Pack, Mulching Lawn Mower Blades, 42 Inch Deck, Compatible with Craftsman 134149, 138971, 422719, Husqvarna 532134149

What It Is

This is a 2-pack of aftermarket mulching blades designed for 42-inch cutting decks on riding lawn mowers. They replace OEM part numbers Craftsman 134149, 138971, 422719, and Husqvarna 532134149, and are intended for mulching—chopping clippings finely to leave on the lawn as fertilizer.

Fitment & Compatibility

Before buying, measure your existing blade length (must be 21 inches from tip to tip), center hole diameter (1 inch), and drive hole pattern (usually star-shaped or 5-point). Confirm your deck is exactly 42 inches—this pack won’t fit 46-inch or 48-inch decks. Cross-reference your mower’s model number against the listed OEM numbers. Common compatible brands include Craftsman (LT1000, LT2000, DYT4000 series) and Husqvarna (YTH, GTH series) with 42-inch decks. Check your owner’s manual or current blade for the OEM part number to avoid returns.

Key Things to Buy

• Quality vs OEM: These are aftermarket blades, typically made of tempered steel. They may be slightly thinner or have a different balance than OEM, but reviews indicate good durability for residential use.
• Installation: Easy—just remove the deck, unbolt the old blade, and bolt this one on. Use a torque wrench to 70-90 ft-lbs. Always wear gloves; blades can be sharp.
• Mulching vs. Bagging: These are mulching blades (more curve, more lift) and will not perform well for bagging or side-discharge. If you need a universal blade, look for “3-in-1” instead.
• Common Gotcha: The 21-inch length is critical—some 42-inch decks use 20.5-inch blades. Measure twice, order once. Also, check blade orientation: the air lift edge must face upward toward the deck.

Should You Buy It

If you have a 42-inch Craftsman or Husqvarna riding mower, mulch your clippings, and want a cost-effective replacement for OEM blades (which can cost $30-40 each), this 2-pack is a solid value. It’s not for commercial use or bagging, but for typical residential lawns, it will give clean cuts and good mulch performance.