Maintaining a pristine lawn requires a sharp and reliable mower blade. A dull or damaged blade tears grass, leaving it vulnerable to disease and creating an uneven, unsightly cut. For owners of Craftsman mowers, finding the correct replacement is crucial for restoring that clean, professional-looking finish to your yard.
With numerous options available, selecting the right blade for your specific Craftsman model can be a challenge. This roundup simplifies your search by highlighting ten of the best blade replacements available. We’ve curated a list that covers various deck sizes and functions, from mulching to high-lift bagging, ensuring you can find the perfect match to get your mower performing like new again.
The Best Craftsman Lawn Mower Blade Replacements
- Grasscool 21 inch Mower Mulching Blade for Craftsman
- (2 Pack) Replacement High Lift Lawn Mower Blades
- Grasscool 138971 42 Inch Mower Blades for Craftsman
- MaxPower 561713B 2-Blade Set for 42″ Cut
- wyevee 331737B Mulching Lawn Mower Blade
- Oregon 3 Pack 96-382 Gator® G3™ Blade 17-1/2″
- Craftsman SBD CMXGZAM110191 42″ Ultra High-Lift Bagging Blade Set
- Maxpower 331981B 21-Inch Universal Gold Metal Mulching Blade
- MaxPower 331387XB Commercial Mulching Blade
- Oregon 592-565 Universal 3-in-1 Lawn Mower Blade
Grasscool 21 inch Mower Mulching Blade for Craftsman
This Grasscool blade is engineered as a direct mulching replacement for a wide range of 21-inch Craftsman push mowers. It is designed to finely chop grass clippings and return them to the lawn as nutrient-rich mulch, promoting a healthier turf. The blade features a round center hole for a secure fit on compatible mower spindles.
Compatibility is a key strength, as this blade replaces numerous common OEM part numbers including 165833, 175064, 189028, and 406712. It is also confirmed to fit certain Husqvarna and Poulan models with 21-inch decks, making it a versatile option for many homeowners. Proper installation ensures optimal mulching performance and a cleaner cut.
(2 Pack) Replacement High Lift Lawn Mower Blades
This two-pack offers excellent value for owners of Craftsman, Husqvarna, and Poulan riding mowers with a 42-inch cutting deck. These are high-lift blades, which are ideal for bagging or side-discharging as they create strong airflow to lift grass for a clean cut. The blades feature a 5-point star center hole design.
They are direct replacements for part numbers like 127843, 138498, and 138971. This set is compatible with popular Craftsman models such as the LT1000 and DYT4000, as well as numerous Husqvarna YTH series tractors. Having a spare blade on hand minimizes downtime, allowing for quick swaps during the mowing season.
Grasscool 138971 42 Inch Mower Blades for Craftsman
Specifically designed for 42-inch deck riding mowers and lawn tractors, this Grasscool blade is a reliable replacement for the common 138971 part number. It ensures a precise fit and effective cutting performance for models like the Craftsman LT1000, LT2000, T110, and YT3000. The 5-point star center hole matches the original equipment specification.
This blade also provides important compatibility information for older Craftsman T110 models, specifying it is for those manufactured before 1997. This attention to detail helps ensure you order the correct part for your specific mower, avoiding potential fitment issues and guaranteeing optimal operation.
MaxPower 561713B 2-Blade Set for 42″ Cut
MaxPower is a trusted name in replacement mower parts, and this 2-blade set is a popular choice for 42-inch Poulan, Husqvarna, and Craftsman mowers. Each blade in the set measures 21 inches long and is built to meet or exceed OEM standards for durability and cutting performance. The set provides a complete replacement for both blades on your mower deck.
It replaces a comprehensive list of OEM numbers, including 138498, 138971, and 127843. As always, it is recommended to verify your current blade’s part number to confirm a perfect fit. This set is a straightforward solution for restoring the cutting efficiency of your riding mower.
wyevee 331737B Mulching Lawn Mower Blade
The wyevee mulching blade is a solid option for 21-inch cut mowers from AYP, Craftsman, Husqvarna, and Poulan. Its design focuses on finely cutting grass clippings so they can decompose quickly on the lawn, acting as a natural fertilizer. This process helps to reduce the need for bagging and disposal.
This blade replaces part numbers such as 165833, 175052, and 406712. It comes with clear installation instructions, noting that the curved side of the blade should face the mower deck to ensure the proper flow of cuttings. This attention to user guidance makes it a good choice for DIY enthusiasts.
Oregon 3 Pack 96-382 Gator® G3™ Blade 17-1/2″
Oregon’s Gator G3 blades are known for their advanced performance, and this 3-pack offers great long-term value. These are high-lift blades, meaning their aggressive angle creates powerful suction to stand grass up for a clean cut, which is excellent for bagging or discharging. This can lead to a noticeably cleaner lawn surface after mowing.
The Gator Mulcher feature is engineered for efficiency, making it a durable option even in normal or abrasive mowing conditions. Buying a 3-pack means you have multiple replacements on hand, extending the time between orders and ensuring you always have a sharp blade ready.
Craftsman SBD CMXGZAM110191 42″ Ultra High-Lift Bagging Blade Set
For those seeking an original equipment manufacturer part, this Craftsman Ultra High-Lift Blade Set is the official replacement. It is engineered specifically for Craftsman 42-inch riding and zero-turn mowers, guaranteeing a perfect fit and performance. The blades feature an S-shape center hole for secure attachment.
These blades are designed for superior bagging performance, using an ultra high-lift design to maximize airflow and grass collection. Being a factory-tested part, you can be confident in its strength, durability, and ability to deliver the cut quality your Craftsman mower was built for.
Maxpower 331981B 21-Inch Universal Gold Metal Mulching Blade
This Maxpower mulching blade stands out with its universal design and included hardware kit. The “Gold Metal” finish is not just for looks; it provides an extra layer of corrosion resistance. Its primary function is mulching, finely chopping grass clippings to nourish your lawn.
A significant advantage is the inclusion of a cover washer and six reducing washers of various sizes. This comprehensive set of hardware greatly increases the chances of a proper fit on many different 21-inch mower models, making it a versatile solution for a wide array of push mowers.
MaxPower 331387XB Commercial Mulching Blade
Built for demanding use, the MaxPower 331387XB is a commercial-grade mulching blade. It is designed for professional landscapers or homeowners who require superior durability and cutting performance from their 21-inch mowers. It fits specific models from Toro, Exmark, and Lawn Boy.
This blade replaces OEM numbers like 108-0954-03 and 116-4500. Its robust construction is meant to withstand frequent use and provide a consistently clean mulching cut. If you have a compatible mower and need a blade that can handle rigorous mowing conditions, this is a strong contender.
Oregon 592-565 Universal 3-in-1 Lawn Mower Blade
Oregon’s Universal 3-in-1 blade is engineered for versatility, functioning as a mulching, bagging, and discharging blade all in one. This allows you to change your mowing style without needing to change the blade itself. It is designed to fit a wide variety of mower models, offering broad compatibility.
The innovative design aims to provide a precise cut regardless of your chosen grass management technique. For the homeowner who prefers flexibility and doesn’t want to stock multiple specialized blades, this 3-in-1 solution provides an adaptable and convenient option for lawn care.
Buying Guide: How to Choose the Right Craftsman Lawn Mower Blade Replacement
Finding the right replacement blade for your Craftsman mower can feel like a chore, but it doesn’t have to be. I’ve learned that a little knowledge goes a long way in making sure you get a blade that fits perfectly and performs well. The most important step is always knowing your mower’s model number. This isn’t a suggestion; it’s the golden rule. You’ll typically find this number on a sticker or plate located on the deck of the mower, often near the discharge chute or on the rear. Having this number is your key to a perfect match, as it tells you the exact blade length, center hole size, and blade style your machine needs.
Once you have your model number, you need to consider the type of blade. The standard, all-purpose blade is a multi-purpose blade that gets the job done for most lawns. If you have a thicker, lusher lawn, a high-lift blade is a better choice. This design creates a stronger vacuum under the deck, which lifts the grass for a more even cut and improves bagging performance. For those of us who mulch more often than we bag, a dedicated mulching blade is the way to go. These blades are designed with curved ends and special cutting surfaces to chop the grass clippings into tiny pieces that decompose quickly and feed your lawn.
Material and build quality are also critical. I always look for blades made from high-carbon steel. This material holds a sharp edge longer and is more resistant to the impacts that come with hitting the occasional rock or branch. Some premium blades also feature coatings like PTFE or powder coating, which reduce grass buildup and resist rust. This isn’t just about looks; a cleaner blade cuts more efficiently and lasts longer.
Finally, think about the sharpening process. A sharp blade is a healthy blade for your lawn. A dull blade tears the grass, leaving it vulnerable to disease and giving your yard a brownish tint. While you can sharpen blades yourself with a file or grinder, many people prefer the convenience of simply replacing them with a new, factory-sharp blade. When looking at the 10 best Craftsman lawn mower blade replacements available in 2025, I prioritize options that are durable, correctly specified for my mower model, and designed for the specific way I care for my lawn. Taking these few minutes to choose wisely will save you time and frustration, and give you a much better-looking lawn.
FAQ
How often should I replace my Craftsman mower blade?
There isn’t a single answer, as it depends on your lawn size and conditions. A good rule of thumb is to inspect the blade for sharpness and damage every 20-25 hours of use. For an average yard, this might mean sharpening it a couple of times a season and replacing it once a year or every other season. If you hit a rock or something hard, replace it immediately to avoid an unbalanced cut and potential damage to your mower.
Can I use a non-Craftsman brand blade on my mower?
Yes, absolutely. Many third-party manufacturers produce high-quality replacement blades that are fully compatible with Craftsman mowers. The critical factor is that the blade matches the specifications of your specific Craftsman model. As long as the length, center hole diameter, and blade style are correct, a well-made aftermarket blade will work just as well as an OEM part, often for a lower price.
What’s the difference between a mulching blade and a high-lift blade?
This is a common question. A high-lift blade has curved wings on the ends that create a powerful upward airflow. This is fantastic for lifting grass for an even cut and for bagging or discharging clippings. A mulching blade, on the other hand, is typically flatter and has more curved cutting surfaces designed to keep the grass clippings suspended under the deck longer, chopping them into fine mulch. Using the right blade for your task makes a huge difference in the final result.
Is it difficult to change the blade myself?
It’s a very manageable DIY task if you are careful. The most important safety step is to disconnect the spark plug wire to prevent the engine from accidentally starting. You’ll need a wrench or socket to loosen the bolt holding the blade on (it’s often very tight). I strongly recommend using a block of wood to wedge the blade in place so it doesn’t spin while you’re loosening the bolt. Always position the new blade with the cutting edge facing the ground and the stamped side typically facing the mower deck.
How do I know if my mower blade needs to be replaced?
You can tell by looking at your grass and the blade itself. If the tips of your grass look ragged and brown a day or two after mowing, that’s a classic sign of a dull blade tearing the grass instead of slicing it. Visually, look for significant nicks, dents, or a blade that is visibly bent. If you’ve sharpened the blade multiple times and it’s lost a lot of its original metal, it’s also time for one of the new Craftsman lawn mower blade replacements.