Finding the right gator blade for a Craftsman mower usually starts with a headache. You search your model number, get a dozen conflicting results, and worry about buying a blade that doesn’t fit the spindle or damages the deck. The specs look similar, but the center hole shapes and air lift heights vary more than you’d expect.
Most aftermarket blades work fine, but the best choices prioritize exact OEM spec matching over generic promises. You need a blade that matches your deck’s geometry, handles the torque from your engine, and suits how you actually use the mower—whether that’s bagging, mulching, or a mix of both.
This guide covers three solid options that fit Craftsman walk-behind and riding mowers. We focus on fitment first, then performance. You’ll see a comparison table, honest trade-offs, and practical installation advice.
Here is a quick look at the key specifications for each blade.
| Features | IDEASURE 942-0741A (1 Pack) | IDEASURE 942-0741A (2 Pack) | UDC Parts 532403107 |
|---|---|---|---|
| Key Specification | 20-3/4″ length, 11/16″ center hole | 20-3/4″ length, 11/16″ center hole | 22-7/8″ length, 5-point star hole |
| Main Feature | Mulching blade for 21″ decks | Mulching blade, 2-pack value | High-lift blade for 46″ decks |
| Compatibility | Troy-Bilt, MTD, Cub Cadet | Troy-Bilt, MTD, Cub Cadet | Husqvarna, Craftsman riding mowers |
| Best Use Case | 21″ walk-behind mowers | Fleet owners or spare blade | 46″ riding mower bagging |
| Deck Size | 21 inch | 21 inch | 46 inch |
IDEASURE 942-0741A Gator Blade
IDEASURE
IDEASURE 942-0741A Gator Mulching Blade for 21" Deck, 742-0741A Mower Blade Compatible with Troy-Bilt MTD Cub Cad et Craftsman, Replaces 942-0741, 742-0741, 942-04276, 742-04276, 1 Pack
- Replaces Part Number: 742-04276, 742-04276S, 942-04276, 942-04276S, 742-0741, 742-0741A, 742-0741-0637, 942-0741, 942-0741A, 942-0…
- Compatible with: Cub Cad et: CC439, CC949, CC989, CC997ES, PR521, S621SS, SC621, SC621E, SRC621, SRE621, SRS621, CC469, CC46M, CC4…
- Compatible with: MTD: RM105, RM110, RM120, RM210, RM220 Walk Behind Mowers; Troy Bilt: Tru-Cut 100, Tru-Cut 110, Tuff-Cut 200, Tuf…
This blade targets the massive group of Craftsman walk-behind mowers that share the MTD platform. If your mower has a 21-inch deck and uses the 942-0741 or 742-0741 part numbers, this is a direct replacement. It suits homeowners who want a genuine mulching blade without paying dealer prices.
The cutting design works well for chopping leaves and grass clippings into fine particles. It is a standard-duty blade, not a heavy-duty option, so it matches the spindle specs of most residential push mowers. The 0.126-inch thickness feels solid without adding excessive stress to smaller engines.
One limitation: this is not a high-lift blade. If you plan to bag wet, thick grass, you might notice reduced airflow compared to dedicated bagging blades. Also, the 11/16-inch center hole means it will not fit Craftsman models that use a star-shaped spindle. Double-check your current blade before ordering.
- Replaces OEM numbers 942-0741, 742-0741, and 942-04276
- Fits 21-inch decks on Craftsman, Troy-Bilt, MTD, and Cub Cadet
- Measures 20-3/4 inches long and 2-1/4 inches wide
- Center hole is 11/16-inch round
- Package includes one blade
Best for: Owners of 21-inch Craftsman push mowers who need a dependable mulching blade that matches OEM specs.
IDEASURE 942-0741A 2-Pack
IDEASURE
IDEASURE 942-0741A Gator Mulching Blade for 21" Deck, 742-0741A Mower Blade Compatible with Troy-Bilt MTD Cub Cad et Craftsman, Replaces 942-0741, 742-0741, 942-04276, 742-04276, 2 Pack
- Replaces Part Number: 742-04276, 742-04276S, 942-04276, 942-04276S, 742-0741, 742-0741A, 742-0741-0637, 942-0741, 942-0741A, 942-0…
- Compatible with: Cub Cad et: CC439, CC949, CC989, CC997ES, PR521, S621SS, SC621, SC621E, SRC621, SRE621, SRS621, CC469, CC46M, CC4…
- Compatible with: MTD: RM105, RM110, RM120, RM210, RM220 Walk Behind Mowers; Troy Bilt: Tru-Cut 100, Tru-Cut 110, Tuff-Cut 200, Tuf…
This is the same blade as the first pick, but sold as a two-pack. It makes sense if you own two identical mowers or want a spare ready for mid-season changes. Sharp blades cut cleaner and put less strain on the engine, so having a backup is practical.
The value here is about convenience. You avoid the hassle of ordering a single blade later when your current one gets dull or hits a rock. For anyone mowing a large suburban lot every week, swapping blades twice per season keeps performance consistent.
The trade-off is upfront cost. You pay more now, even though the per-blade price is lower. Also, this blade still has the same round center hole and standard lift limitations as the single pack. Confirm your deck uses the 942-0741A pattern before committing.
- Two blades included for the same 21-inch deck fitment
- Same dimensions as the single pack: 20-3/4 x 2-1/4 inches
- Works with MTD, Troy-Bilt, and Cub Cadet models
- Good option for rental properties or multiple mowers
- Compatible with Craftsman models using 742-0741A
Best for: Budget-minded buyers who want a spare gator blade on hand for a 21-inch Craftsman mower.
UDC Parts 532403107 Blade
UDC Parts
UDC Parts 532403107 405380 YTH22V46 Husqvarna 46" Mower Blades Replacement | Fits Z246 RZ4623 YTA22V46 532405380 403107 YTH20K46 YTH21K46 46 Inch Craftsman AYP Poulan Ariens, Gator Mulching, 5Point Star
- Please confirm the complete model number to ensure a proper fit. See the description below for a complete list of models compatibl…
- Replaces OEM Part: Husqvarna 403107, 405380, 532405380, 532403107, 917532403107, 532 40 31-07, Craftsman CMXGZAM110146
- 403107 Lawn Mower Blades Dimensions: Length 22-7/8", Width 2-1/2", Center Hole 5 point star, Air Lift 1", Cutting Edge Length 8-21…
This UDC Parts blade serves a completely different group: Craftsman riding mowers with 46-inch decks. It replaces the Husqvarna 532403107 and 532405380 parts, which also appear on many Craftsman tractors built in the same factories. If your mower uses a five-point star spindle, this is the correct pattern.
The high-lift design sets this blade apart. The 1-inch air lift creates strong airflow that pushes clippings up into the deck and out the discharge chute. That makes it a strong choice for bagging grass, especially when the turf is damp. The longer cutting edge, at 8-21/32 inches, covers more ground per rotation.
There is a catch. High-lift blades require more horsepower to spin. On a smaller Craftsman engine, you might notice the mower working harder or a slight drop in belt speed. Also, this is not a mulching blade, so if you want fine clippings returned to the lawn, look elsewhere.
- Fits 46-inch decks on Craftsman and Husqvarna riders
- Five-point star center hole for OEM spindle fit
- Measures 22-7/8 inches diagonally
- High-lift design improves bagging performance
- Replaces OEM part numbers 532403107 and 405380
Best for: Craftsman riding mower owners who need a high-lift blade for reliable bagging on a 46-inch deck.
How We Chose These Products
We started with fitment data, not brand names. Each blade was checked against OEM part number cross-references and deck size compatibility. A blade that doesn’t match the spindle pattern or deck width is useless, regardless of how well it cuts.
Performance claims were weighed against real-world constraints. We considered blade thickness for spindle stress, air lift for bagging versus mulching needs, and whether the blade suits typical residential turf conditions. The IDEASURE blades earned their spot for direct OEM replacement value. The UDC Parts blade made the list for its high-lift capability on larger decks.
Buying Guide: What Really Matters
Before you buy a gator blade for your Craftsman, identify your deck series. Walk-behind mowers often use a 21-inch deck with a round center hole. Riding mowers typically have 42-inch or 46-inch decks with a five-point star spindle. Look at your current blade and measure the center hole shape and the overall length.
Blade thickness matters more than most people think. A thicker blade, like 0.126 inches, adds durability but also increases rotating mass. That extra mass can strain older spindle bearings. Stick to the OEM thickness spec for your model to avoid premature wear.
Decide between mulching and high-lift designs. Mulching blades, like the IDEASURE, keep clippings circulating under the deck for fine cutting. High-lift blades, like the UDC Parts option, excel at discharging clippings into a bag. A standard blade offers a balanced approach for those who switch between bagging and side discharge.
Our Top Recommendation
The IDEASURE 942-0741A single pack is our top pick for most Craftsman owners. It covers the most common walk-behind mower platform, matches OEM dimensions exactly, and delivers reliable mulching performance. The price is reasonable, and the fitment list is broad enough to cover many MTD-built models.
If you own a 46-inch Craftsman riding mower and primarily bag clippings, the UDC Parts 532403107 blade is the better choice. Its high-lift design handles wet grass more effectively than a standard or mulching blade. For those who want a spare blade ready at all times, the IDEASURE two-pack offers simple convenience without compromising on fit.
Frequently Asked Questions
Will a gator blade fit any Craftsman mower?
No. You must match the blade length, center hole shape, and deck size. A 21-inch walk-behind blade will not fit a 46-inch riding mower deck. Always verify your mower’s OEM part number against the replacement blade’s compatibility list before purchasing.
What is the difference between a gator blade and a regular mulching blade?
Gator-style blades use a serrated edge or specialized cutting surface to chop clippings finer than standard mulching blades. They create more lift and turbulence under the deck. The IDEASURE blades feature a mulching design, while the UDC Parts blade offers high-lift for bagging.
How often should I sharpen my gator blade?
For typical residential grass, sharpen every 20 to 25 hours of mowing. If you cut thick fescue or frequently hit sandy soil, you will need to sharpen more often. Dull blades tear grass, leaving a brown tip and increasing the risk of disease.
Can I use a high-lift blade on a standard Craftsman spindle?
You can, but check the spindle torque rating first. High-lift blades create more air resistance and load. On older or smaller Craftsman tractors, this can cause belt slippage or spindle bearing failure. Match the blade’s lift height to your engine’s horsepower.
