Broken lawn mower belts can significantly disrupt your day and leave you with a tremendous mess. When a lawnmower drive belt breaks, wears out, or becomes flimsy, it can cause several problems. These include reduced performance, increased noise levels, and even damage to the lawn mower.

A broken belt can be aggravating, but it can also be hazardous. If the blades are still spinning during a belt failure, they may cause serious injury. The best lawn mower belts are durable and can stand up to regular use.

Well-constructed lawn mower belt should be manufactured from durable materials and designed to resist wear and tear. Our goal is to discuss the top 5 most effective lawn mower belts you can find for your needs here.

Craftsman Lawn Mower Deck Belt (144959)

Long-lasting kevlar construction lawn mower deck belt

● Laser OEM replacement belts
● Durable and sturdy drive belt
Belt Design: Kevlar construction
Material: Organic polyamide fibers
Product Dimensions: 7 x 4 x 2 inches
Item Weight: 0.59 Pounds
Recommended deck size: 42″ decks

Max Power Belts (336351B)

Heavy-duty lawn mower belts for maximum power transfer

● Meets OEM specifications
● Double-cover drive belt
Belt Design: Aramid cord construction
Material: Aramid
Product Dimensions: 14.63 x 3.75 x 1 inches
Item Weight: 0.57 Pounds
Recommended deck size: 42″ decks

Mudder Mower Belt

High tensile strength and wear resistance belts for lawn mower

● Anti-flexibility lawn mower belts
● Adjustable drive belt
Belt Design: Strong cushion construction
Material: Cotton canvas rubber
Product Dimensions: 7.09 x 6.89 x 1.61 inches
Item Weight: 0.70 Pounds
Recommended deck size: 42, 46 and 50” deck

Top 5 Picks for the Best Lawn Mower Belts

Lawnmower belts are not all created equal. These belts are made from different materials and have additional features better suited for specific tasks.

The followings are our top 5 picks for the best mower belts that you can find:

01. Craftsman Lawn Mower Deck Belt (144959)

If you’re looking for a replacement deck belt for your Craftsman lawnmower, look no further than this one. This belt is made to fit the Craftsman model and is sure to help get your mower back up and running in no time. 

Key Features:

  • Fits Craftsman model riding mowers
  • High-quality replacement belt
  • Durable and sturdy Kevlar construction
  • Works with many 3-blade decks

The deck belt is a high-quality belt designed to meet or exceed OEM specifications. It is not a generic belt, so you can be sure that it will fit your mower perfectly and provide years of reliable service.

This Kevlar replacement belt is durable and sturdy for most Craftsman, Poulan, Husqvarna, and Wizard decks. The Kevlar belt is built to last, withstanding even the most strenuous yard work.

It is designed to fit most decks, making it easy to find a OEM belt. The belt is also made to work with many 3-blade decks, making it a versatile option for those with multiple deck sizes.

These lawn mower decks are equipped with a unique belt of Kevlar fibers. This belt is designed to last longer than traditional polyester belts, making it an excellent choice for durable options.


  • Designed to last longer
  • Easy replacement belt
  • Kevlar construction
  • 3-blade compatibility


If you need a genuine Kevlar belt replacement instead of a generic belt, this Craftsman lawn mower deck belt (144959) is a great option. Designed to fit most decks, it is a versatile choice for those with different deck sizes.

02. Max Power Belts (336351B)

Whether you have a 42″ MTD, Troy-Bilt, or Cub Cadet mower, you may want to consider the Maxpower (336351B) drive belt.

Key Features:

  • Aramid cord construction for superior strength
  • Double cover and clutching cover
  • Fits 42″ and newer LT-5 design frames
  • Meets or exceeds OEM specifications

Max Power Belts are an excellent choice for replacement deck drive belts on Cub Cadet, MTD, and Troy-Bilt lawnmowers. They are durable materials and feature a full length to provide a long service life.

These belts are made to be durable and long-lasting. The belt is 96-1/2” long and 1/2″ wide, making it perfect for various activities and purposes.

The deck drive belt is made with aramid construction for superior strength and durability. They have a double-cover and clutching cover to keep them in place.

They are designed to fit 42 inches 2005 and the newer LT-5 design frames, making them ideal for those looking for a high-quality product. With these belts, you can be sure that you’re getting the most out of your purchase.

MaxPower’s mower alternate belts are great for keeping your equipment running smoothly. These belts are made to meet or exceed OEM specifications, so you can be sure they’ll fit and perform well. 


  • Double cover
  • Fits 42″ lawnmower
  • Aramid construction
  • Clutching cover


  • Not compatible with Cub Cadet 42″


If you are looking for a new belt to work out in or need to replace an old belt, Max Power belts (336351B) are a great choice. Their durable construction and long-lasting design ensure quality.

03. Mudder Mower Belt 

This Mudder replacement deck belt is perfect for use with lawnmowers. It is compatible with various models and is made to fit securely and snugly.

Key Features:

  • Made to fit securely and snugly
  • The canvas cover has a high tensile strength
  • Heavy-duty rubber construction
  • The anti-wear coating protects from damage
  • Uses a polyester rope for tension and reinforcement

This belt is compatible with various lawn mower brands and sizes. If you are looking for a replacement belt for your mower, this is a great option to consider.

Mudder mower belts are a great way to attach a belt to two shafts easily. They are adjustable, so if the center distance between the two shafts is not flexible, a triangle belt can be inserted into the wheel groove first.

The canvas cover of this belt has high tensile strength and wear resistance, resulting in a callous surface layer. This makes the belt ideal for those looking for a product that can withstand heavy use.

Heavy-duty rubber construction ensures that the belt will not flex or break, while the anti-wear coating protects it from damage. This makes Mudder belts perfect for use in mowing applications where durability is essential.

This belt is a high-quality product that uses a polyester rope for tension and reinforcement. This ensures that the belt has strong tension and no elongation, making it ideal for use with lawn mowers.


  • Anti-wear coating
  • Sturdy rubber construction
  • No elongation
  • High tensile strength


When you need a tough, durable belt compatible with various lawnmower brands, the Mudder mower belt is a great option to consider.

04. John Deere Replacement Belts for Lawn Mowers (GX20072)

The John Deere lawn mower belt by John Deere is a great spare belt for your mower.  This belt fits a variety of mowers and is made of high-quality materials.

John Deere lawn mower belts are constructed with Kevlar cords to resist high horsepower demands. Reduced belt rollover in pulleys helps to ensure a longer belt life.

It fits a 42″ deck but does not turn the belt. This makes it the perfect choice for anyone who wants to ensure their belt lasts as long as possible.

This John Deere lawn mower belt is perfect for keeping your mower running smoothly. It is 1 inch wide and 16.5 inches long, and it weighs 8.8 ounces.

These mower deck belts are made from high-quality materials, and it hasn’t stretched. It’s easy to install, and it’s the perfect size for most riding mowers.

Highlighted Features:

  • Made with quality materials
  • Fits many different mudder mowers
  • Kevlar cords for added durability
  • Reduced belt rollover in pulleys
  • Not prone to stretching


This John Deere Replacement Belts for Lawn Mowers (GX20072) is a great alternate belt for your lawnmower. Designed to fit a variety of mowers, it is made of high-quality materials.

05. Murray Lawn Mower Drive Belt

Murray riding mowers blade belt is perfect for replacing a worn-out or defective belt on your 42″ lawnmower. The belt is designed to fit various models and is made from durable materials that can withstand regular use.

The lawnmower blade drive belt is perfect for those with a 42″ deck. It is made to last and fits snugly to get the most out of your mower.

This blade drive belt for 42″ decks is a genuine part that helps drive the blades on your lawnmower. This belt is made to last and is a crucial part of your mower’s operation.

The lawn mower belt attaches to the two pulleys from the blades, and from there, it is connected to the engine’s accessory pulley. It is important to get the right belt for your specific model, so check the size and type before ordering.

If you’re looking for a lawn mower belt that is easy to install and fits perfectly, then this blade belt is the right choice for you. It’s made of durable materials and will help keep your mower running smoothly.

The drive belt is easy to change and has not been slipping so far. This belt is a great option for those looking for a durable and reliable product.

Highlights Features:

  • Made of durable materials
  • Attaches to the blade pulleys
  • Easy to install
  • Works with various models
  • Reliable and long-lasting


This Murray lawn mower drive belt is a perfect choice, no matter what your needs are, especially if you need mower replacement belts for your 42″ lawnmower. Installing it is simple, and the materials are high-quality and durable.

This is the list of the top 5 most acceptable belts available in the market for mower. These products are made of high-quality materials and construction, so you can be sure that they will last long.

But before purchasing one, you need to consider some things to find the ideal one that will perfectly fit your needs.

Buying Guide For Selecting the Best Lawn Mower Belt

Buying Guide For Selecting the Best Lawn Mower Belt

A worn-out or defective belt can cause your riding mower to work less efficiently. So, it is imperative to replace it with a new one from time to time. But with so many different types and sizes of belts available in the market, it can be pretty confusing to choose the right one.

Here are some considerations that you need to keep in mind while choosing the best lawn mower belt for your needs:


The first and most important consideration while choosing a riding mower belt is its size. Lawnmower belts come in various sizes, so it is essential to choose the right size that will fit your mower model.

You Can Also Read: Lawn Mower Deck Size Measurement.


The belts on a mower play a vital role in keeping the blades turning, so choosing durable and adequately sized ones is important. For durability, look for belts made from Kevlar or reinforced rubber. These materials can withstand high temperatures and repeated use without showing wear.

Type of Lawn Mower:

Anyone who has ever mowed a lawn knows that the type of mower you use can make a big difference in the quality of your cut grass. But what many people don’t realize is that the type of mower you use can also have a significant impact on the wear and tear of your belts

Depending on the model of your mower, the belts that drive the blades can be subject to different amounts of stress.



When it comes to maintaining a pristine lawn, the type of mower you use is essential, but so is the type of belt that powers it. There are three main types of belts used in lawnmowers & garden tractors:

  • V-belt: V-belts are the most common type of belt used in lawnmowers. They’re made from nylon cord and reinforced with fiberglass or Kevlar fabric.
  • Kevlar belt: Kevlar belts are similar to V-belts, but they’re more substantial and durable.
  • Timing belt: Timing belts are made from reinforced rubber to withstand high temperatures. They’re often used in commercial mowers & garden tractors.

When choosing the right belt for your mower, consider the material of the belt and the type of mower you have. If you have a high-powered mower, you’ll need a belt to withstand high temperatures and stress.

Ease of Use:

The riding mower is one of the essential pieces of equipment for any homeowner with a yard. But while many people focus on the style or power of their riding mower, one of the most important factors to consider is the ease of use.

Cord Construction:

The right mower belt helps to transfer power from the engine to the wheels, blades, or other mowers moving parts. As a result, it’s crucial to choose a durable and compatible belt with your mower. The cord construction refers to the materials used in the belt, such as Kevlar or nylon.

Strength of Cord:

The cord is the part of the belt that transfers power from the engine to the wheels. As a result, it’s crucial to choose a belt with a strong cord that won’t snap under stress.

By considering these factors, you can be sure to find the most suitable mower belt for your needs. With a little bit of research, you can find the perfect belt to keep your mower running smoothly.

Lawn Mower Replacement Belt Changing Safety Tips

Changing a mower belt is a relatively simple process, but there are a few safety considerations to keep in mind. Here are some tips to help you transform your mower belt safely:

  1. Wear Gloves: When changing a mower belt, it’s essential to wear gloves to protect your hands from the sharp edges of the metal deck.
  2. Disconnect the Spark Plug: Before changing the belt, disconnect the spark plug from the engine. This will prevent the mower from accidentally starting while you’re working on it.
  3. Remove the Old Belt: Once the spark plug is disconnected, you can remove the old belt. Start by loosening the bolts that hold the deck in place. Then, remove the old belt from the pulleys and discard it.
  4. Connect the Belt Safely: When connecting the new belt, thread it through the deck carefully. Avoid pinching your fingers between the deck and the belt.
  5. Tighten the Bolts: If the deck is not properly secured, the lawnmower could tip over while in use. Be sure to tighten the bolts securely before testing the lawnmower.
  6. Choose the Correct Size: It’s essential to choose a lawnmower belt that is the correct size for your model. A too-large belt can slip, while a too-small belt can break under stress.
  7. Always Wear Safety Goggles: When working with mower parts, it’s essential to wear safety goggles to protect your eyes from flying debris.

You can safely change your best lawn mower belt and get back to mowing your lawn by following these tips. With a little bit of care, you can keep your lawnmower running smoothly for years to come.

The Importance of Lawn Mower Maintenance

The Importance of Lawn Mower Maintenance

Lawn mower maintenance is essential to keeping your mower running smoothly. By cleaning and lubricating your mower, you can extend its lifespan and prevent expensive repairs.

Cleaning the Lawn Mower Deck

One of the essential aspects of maintenance is cleaning the lawnmower deck. The deck is the part of the lawnmower that comes into contact with the grass so that it can become clogged with dirt and debris over time.

To clean the deck, start by removing the spark plug from the engine. This will prevent the lawnmower from accidentally starting while you’re working on it. Then, use a garden hose to rinse off the deck.

Be sure to remove any build-up of grass or dirt from the underside of the deck. Once the deck is clean, you can change the spark plug and reassemble the lawnmower.

Lubricating the Lawn Mower Blades

Another important aspect of mower maintenance is lubricating the blades. The blades can become dull over time, so keeping them sharp and lubricated is important.

After lubricating, the blades, reconnect the spark plug and test the lawnmower to make sure it’s running smoothly.

You can keep your lawnmower in top condition by following these simple tips. By taking the time to maintain your lawnmower, you can extend its lifespan and avoid expensive repairs.


Listed below are some frequently asked questions about mower belts:

01. Are Kevlar Mower Belts Better?

Kevlar belts are designed to be more durable than standard belts. They’re often used on commercial mowers because they can withstand heavy use.

02. How Long Should a Belt Last on a Riding Lawn Mower?

How Long Should a Belt Last on a Riding Lawn Mower

Under flawless circumstances, the life expectancy of a mower drive belt is between three and four years. Using your mower frequently or failing to take good care of it can cause it to wear out sooner.

03. Can Mower Belts Stretch?

Mower belts can stretch over time. This is why it’s important to check the tension of your belt regularly and adjust it as needed.

04. What Does the Drive Belt Do on a Riding Mower?

The drive belt is used to connect the engine crankshaft to the transmission pulley in order to drive the vehicle’s rear wheels. The lawn tractor cannot operate if the belt breaks. When the lawn tractor’s belt is worn, it moves slowly since the belt slides over the pulley.

In Conclusion

Maintaining your lawnmower is essential to keeping it running smoothly. A well-functioned mower can make all the difference in having a well-kept lawn. Without a doubt, taking care of your mower will save you time and money in the long run.

The best lawn mower belts can do wonders for your lawnmower. Researching with the help of this article can help you find the ideal one for your model. By simply following the review above, you will be able to keep your mower in top condition.

Not to mention, having a well-functioning mower can make all the difference in having a well-kept lawn. Therefore, you must take care of your lawnmower and choose the best belt. We hope this article was helpful in your search for belts for lawn mowers.

Craftsman 144959 Replacement Deck Belt
  • Belt duplicated to meet or exceed omen specifications, not a generic belt
  • Replaces belt part number 144959, 532144959
  • Laser OEM replacement belts