The 7 Best Mulching Mower Blades for Common Deck Sizes of 2026

A 46-inch deck is a different job from a 21-inch walk-behind, and this pair is sized for it: two blades at 22-7/8 inches with a five-point star center hole, cross-referenced to Ariens, Husqvarna, AYP, Poulan, Snapper, Dixon, and Stens numbers. The high-lift wing along the trailing edge does the mulching, standing clippings up and throwing them back into the blade path instead of letting them fall out the chute.

We reach for this pair when the lawn is buried in leaves, and that is the case it makes. The deck stops laying windrows and starts leaving a fine scatter, and the thick steel shrugs off sticks and the occasional rock. Heavy is the trade: on a small tractor you feel the extra mass at spin-up, and if your engine already struggles in tall grass, a lighter blade is the kinder choice.

The factory edge is the other thing to check, because ours wanted a few strokes of a file before it would cut clean, and that is a ten-minute job rather than a reason to send them back. Check balance before you torque, too. A nail through the center hole and a steady hand is enough to tell you whether you are bolting on a smooth pair or a vibrator.

This is the lowest-priced way onto a 42-inch Craftsman or Husqvarna deck in this group, and it earns its place on more than price: the five-point star hole drops straight onto the mandrels those tractors use, the cut comes out even, and the blades arrive balanced enough to run without a fight.

The cross-reference covers a wide slice of the AYP-built world, replacing 134149, 422719, 532134149, 424752, and 138971, which means LT1000 and LT2000 tractors, the T110 and T210, the YS4500, and the Husqvarna YTH and LTH series. It also means two patterns live under the same 42-inch badge: pull your old blade and confirm the five-point star before ordering, because the six-point version fits the same deck size and none of the same mowers.

In the grass, the curved shape does what the seller claims. It lifts clippings and recirculates them, so what is left behind is small enough to disappear into the turf rather than clump under your feet, and the cut surprised us for the money. The black coating is cosmetic rather than protective, so don't read it as a sign of heavier steel than you are getting.

Cub Cadet's 42-inch decks don't all use the same center hole, and this blade is the six-point-star version. Pull your old blade first: if the hole is a six-point star, this set covers the XT1 LT42 and LT42 C, the XT2 LX42, the ZT1-42 and RZT42, and the Troy-Bilt Pony, Bronco, and Mustang 42s. If your hole is a five-point star or round, this is not your blade no matter what a title says.

Build is where it separates from the cheaper 42-inch options. The steel is heavy, the blades arrive straight and sharp, and they take the kind of accidental rock strike that ends a lighter blade's season. Mulching is fine enough that you stop noticing clippings, and the cut is smooth enough that the deck settles down instead of shaking.

This is the one we take for a six-point-star Cub or Troy-Bilt 42. The reason is unglamorous: heavy steel that stays straight, an edge that holds through a season, and clippings chopped small enough to vanish into the turf. For the money it is the most blade you get for a 42-inch Cub.

Two and a quarter inches of width and just under two pounds of steel: the 331376XB is heavier than the blade that came on your Recycler, and the extra mass is where the mulching comes from. It is the commercial version of the 22-inch Toro blade, 21-11/16 inches long with a 7/16-inch round center hole, cross-referenced to 104-8697-03, 108-9764-04, and 131-4547-03.

Mulching is what we noticed first. The deck stops throwing clumps and starts laying a fine scatter, and tall grass doesn't bog it the way the stock blade does. What it won't do is bag, because the same lift that recirculates clippings sends them back under the deck instead of up the chute. If you bag every week, this is the wrong blade for your mower.

Balance is worth a minute before it goes on. A cone balancer is cheaper than a spindle, and this blade is heavy enough that an off-balance one announces itself through the handlebars. Don't read 'commercial' as indestructible either; it's a heavier blade, not a stronger one, and a hidden stump still wins.

If you already own an EGO Select Cut mower, the question isn't which brand of blade to buy, it is whether the lower blade on the multi-blade system gets replaced with EGO's own part or a copy. This is the OEM part: a 21-inch all-steel blade, sold as a pair, that drops onto the interchangeable lower position on the LM2130, LM2133, LM2135SP, LM2150SP, and LM2156SP.

It mulches and it bags, which is more than most blades on this page manage. The fit onto the Select Cut hub is exact, the cut is clean, and the pair means you have a spare the day the first one dulls. Stock comes and goes on this listing, so order before you need it rather than after the deck is already apart.

We pay for OEM here because the Select Cut deck indexes off that lower blade, and a copy that is slightly off shows up as vibration you will chase for a month. The catch is the hardware: the blades arrive without the mounting bolts, so put those in the same order or you will be looking at a mower you can't reassemble.

A mower blade is a wear part, and the argument for this set is simple: two blades, so a dull edge on a Saturday morning costs you ten minutes instead of a week. For a 22-inch Toro Recycler with the 7/16-inch round hole, this is the way we buy blades, one on the deck and one on the shelf, with a cost per blade that comes out well under the singles here.

The dimensions are right: 21-11/16 inches long, 2-1/2 inches wide, cross-referenced to 131-4547-03, 108-9764-03, and 104-8697-03, which covers a long run of the 20000-series Recyclers. The cut is clean and the mulch is fine while the blade is sharp, which is the whole point of having a second one waiting.

One thing to check before install day. Both blades in a set can arrive slightly out of true, so lay each one on a flat bench and sight down its length before it goes anywhere near the spindle. A twisted blade tells you about it through the handlebars, and by then you have already done the work twice.