IDEASURE Mulching Blades for 42-inch Deck — 2-Pack, 5-Point Star Steel Replacements

These replacement mower blades are engineered to fit a wide range of 42" lawn tractors and riding mowers from brands such as Husqvarna, Craftsman, Poulan and others. Each blade is made from a single piece of thick steel, has a 5-point star center hole and measures approximately 21" long, 2-1/2" wide and 0.197" thick. The set includes two blades packaged together for axle-symmetrical installations on decks that require a matched pair.

Will these blades fit my mower model?

Compatibility is based on deck size, center-hole pattern, and blade length. These IDEASURE blades are intended for 42" decks with a 5-point star mounting hole and replace common part numbers like 134149, 127843, 138498 and 532138971.

• Fits many Husqvarna models: LT125, LTH130, YTH1842, YTH20F42T, YTH2042.
• Fits Craftsman models: LT1000, LT2000, YT3000, YT4000, YS4500.
• Compatible with Poulan, Murray, Ryobi, Weed Eater, Jonsered and others with the same mounting.
• Measure your existing blade length, thickness, and center hole before ordering.

How do these blades affect cutting and mulching performance?

The blades are shaped to produce a mulching action that chops clippings into finer pieces while also allowing for even discharge when needed. Their robust steel construction helps maintain edge integrity through multiple mowing sessions, supporting consistent, uniform cuts across the deck.

• Mulching profile reduces clumps by recirculating and cutting clippings.
• Precision length and width provide coverage for a 42" deck without leaving gaps.
• Balanced pair reduces vibration and improves deck stability.
• Durable steel resists bending and wears more slowly than thinner blades.

What are the specifications and installation notes?

Each pack contains two IDEASURE 138971 blades: 21" long, 2-1/2" wide and 0.197" thick with a five-point star center hole. Installation is straightforward but requires the correct torque and blade orientation; always follow your mower manufacturer's safety and installation instructions.

• Package: 2 x 138971 mulching blades.
• Dimensions: 21" length, 2-1/2" width, 0.197" thickness.
• Center: 5-point star mounting hole compatible with listed part numbers.
• Before purchase: confirm the blade shape, hole pattern, and deck clearance on your mower.

Who is this for? Homeowners and lawn-care enthusiasts who maintain 42" riding mowers and need durable, direct-replacement mulching blades will find this IDEASURE 2-pack useful. It's aimed at users who want to restore cutting performance on older decks or swap in a matched set for quieter, more uniform mowing. If your tractor specifies the listed part numbers or matches the blade measurements and star-hole pattern, these blades are a practical, cost-effective option for routine replacement and seasonal upkeep.