That worn-out, cracked, or missing rear flap on your lawn mower is more than just an eyesore. It’s a critical safety component designed to prevent debris from being thrown backwards, protecting you, your property, and your mower’s engine. A compromised flap can lead to uneven cuts, poor mulching or bagging performance, and potential damage from objects being kicked up from under the deck.
Finding the right replacement part can feel daunting with so many mower models and part numbers. To simplify your search, we’ve compiled a list of top-rated rear flap replacements for major brands like Toro, Honda, Husqvarna, and Craftsman, as well as a universal option. This guide will help you find the perfect fit to restore safety and performance to your lawn care routine.
The Best Lawn Mower Rear Flap Replacements
- 120-7012 Trailing Shield Flap Compatible with Toro 22″ Recycler
- SurpLee 06761-VG3-305 Replacement Lawn Mower Rear Shield/Guard Flap Kit
- 532444501 Trailing Shield Flap Compatible with Husqvarna Skirt Rear
- SurpLee 127-0724 Trailing Shield/Flap Kit for Toro 21″ Recycler
- HASME Replacement Skirt Flap for Craftsman Push Rear Lawn Mowers
- Rvanv 731-07203 Mower Flap, Lawn Mower Trail Shield Compatible
- Oregon Gator Mulcher 3-N-1 Blade For 72-Inch Toro Groundmaster
- EZYPAK 539110732 Discharge Deflector Side Chute Compatible
- Arnold 490-324-0003 Universal Mower Rear Flap
120-7012 Trailing Shield Flap Compatible with Toro 22″ Recycler
This trailing shield flap is a direct replacement part for a wide range of 22-inch Toro Recycler models. It is designed to match the original equipment specifications, ensuring a proper fit and reliable performance. By restoring the rear flap, you maintain the mower’s ability to effectively recycle clippings and protect against debris discharge.
The part is compatible with numerous Toro model numbers, including the 20332, 20333, 20334, 20337, and 20338 series, among others. It also replaces several common part numbers like 139-6604, 145-5821, and 139-6597. This makes it a straightforward solution for owners of these popular Toro mowers seeking to regain optimal safety and cutting quality.
SurpLee 06761-VG3-305 Replacement Lawn Mower Rear Shield/Guard Flap Kit
Specifically engineered for Honda HRR216 and related series mowers, this rear shield kit from SurpLee serves as a replacement for the original part number 76118-VG3-020. It is constructed to meet the durability standards required for regular mowing use, helping to contain clippings and protect the operator.
The kit is compatible with a long list of Honda walk-behind mower variants, including the HRR216K, HRS216K, and HRT216K models. This precise compatibility ensures a correct installation and restores the mower’s original safety features and bagging or mulching performance. It is an ideal solution for Honda mower owners needing a reliable, non-OEM replacement part.
532444501 Trailing Shield Flap Compatible with Husqvarna Skirt Rear
This trailing shield flap is made to fit a variety of 22-inch Husqvarna and Jonsered walk-behind mowers. With specific dimensions of 18-3/4 inches at the top and bottom and a height of 5-1/8 inches, it is designed to seamlessly replace the original part number 444501 on compatible models.
Its broad compatibility covers popular Husqvarna models such as the HU700AWD, HU725AWD, HU800AWD, and HD675AWD. It is also a fit for certain Jonsered J675AWD mowers. Installing this flap helps ensure safe mowing operation by acting as a barrier against debris thrown from the rear of the mower deck.
SurpLee 127-0724 Trailing Shield/Flap Kit for Toro 21″ Recycler
This replacement kit is tailored for 21-inch Toro Recycler and Flex-Force lawn mowers. It is designed as a direct substitute for part number 127-0724, providing a solution for owners whose original trailing shield has become brittle or damaged.
The flap is compatible with numerous Toro models, including the 10730 series, 17730 series, 20349, 20367, and the newer 60V MAX 21in Recycler models like the 21356 and 21357. A properly functioning flap is essential for maintaining the aerodynamic seal needed for the Recycler’s effective mulching system and for safe rear-bagging operation.
HASME Replacement Skirt Flap for Craftsman Push Rear Lawn Mowers
This HASME skirt flap is a new, unused replacement part designed for specific Craftsman push mowers. It is built to restore the rear protective barrier on your mower, which is vital for safe operation and preventing grass and debris from being thrown towards the user.
The product replaces several common part numbers, including 532413159, 178398, and 413159. It fits a selection of Craftsman and Husqvarna-branded mower models such as the 5521CHV, 7021CH1B, and XT721F. This part offers a straightforward way to address a common wear point on these mowers.
Rvanv 731-07203 Mower Flap, Lawn Mower Trail Shield Compatible
The Rvanv mower flap is a versatile replacement part compatible with a range of brands, including Craftsman, MTD, Huskee, and Troy-Bilt. The package includes the necessary hardware for installation, typically featuring screws and anchor bolts to secure the flap firmly in place.
With dimensions of approximately 4-1/2 inches in height and 16-3/4 inches along the top and bottom, this flap is sized for specific mower decks. The manufacturer recommends pushing the mower only in a forward direction when the shield is installed to maintain its service life and prevent damage from the mower blades.
Oregon Gator Mulcher 3-N-1 Blade For 72-Inch Toro Groundmaster
While not a flap, this Oregon Gator Mulcher blade is a critical component for the discharge area on large commercial mowers like the 72-inch Toro Groundmaster. This 3-in-1 blade is engineered to handle mulching, bagging, and side-discharge functions efficiently, contributing to a cleaner cut and improved grass management.
It replaces OEM part numbers 52-0250 and 57-0250. With a diagonal cutting length of 24-3/4 inches, three blades are required to equip a 72-inch cutting deck. A sharp, well-balanced blade like this is fundamental to the mower’s performance and can influence how effectively the mower manages grass clippings at the rear discharge.
EZYPAK 539110732 Discharge Deflector Side Chute Compatible with Husqvarna Lawn Mower
This EZYPAK part is a discharge deflector or side chute, which serves a similar safety purpose as a rear flap but for the side discharge outlet on riding mowers and tractors. It is constructed from durable materials made to withstand regular use and various outdoor conditions.
As a replacement for part number 539110732, it is compatible with a wide array of Husqvarna riding mowers and lawn tractors, including the GT48XLS, iZ4821, YT48XLS, and Z248F models. A intact deflector is essential for directing grass clippings downward and preventing them from being ejected at high speed towards people or property.
Arnold 490-324-0003 Universal Mower Rear Flap
The Arnold Universal Mower Rear Flap is designed as a general-purpose solution for a variety of walk-behind mowers where a specific OEM part is not available or desired. Its universal design allows for adaptation to many different mower models, providing a flexible option for many homeowners.
This type of flap is typically made from a durable rubber or polymer that can flex without cracking. It can often be trimmed to fit the specific width of your mower’s rear opening. While not a custom fit for any particular model, it offers a practical and accessible way to restore a basic level of safety and debris control to your mower.
Buying Guide: How to Choose the Right Rear Flap Replacement
When your mower’s rear flap gets brittle, cracked, or just falls off, it’s more than a minor annoyance. That little piece of rubber or plastic is a safety and performance part. It keeps debris from shooting out the back like a missile, helps create proper suction for an even cut, and prevents ugly clumps of grass from being dumped on your freshly mowed lawn. I’ve replaced a few of these on my own machines, and I can tell you that not all replacements are created equal. Here’s what I look for when I need to find one of the best lawn mower rear flap replacements I can buy.
First and foremost, you need to get the right fit. This isn’t a one-size-fits-all situation. The most important step is to find your mower’s model number. This is usually on a sticker or metal plate on the deck, often near the engine or the back of the mower. Once you have that, you can search for parts specifically designed for your model. Trying to guess or use a “universal” flap can lead to a lot of frustration. If you can’t find the model number, take some precise measurements of the old flap—its length, width, and the distance between the mounting holes.
Next, consider the material. Most original equipment manufacturer (OEM) flaps are made from a durable, flexible rubber or a sturdy polyethylene plastic. Rubber flaps are great because they stay flexible and create a good seal against the ground. Plastic flaps are more rigid and can be less prone to curling over time. I tend to prefer rubber for its consistent performance, but a high-quality plastic flap from the mower’s manufacturer is also a solid bet. Be wary of cheap, thin plastic that feels brittle; it probably won’t last a single season.
Finally, think about the installation process. How is the old flap attached? The most common methods are bolts that go through grommets in the flap, a J-hook or C-channel that slides onto a metal bar, or simple push-in clips. Make sure the replacement you order uses the same attachment system. Some aftermarket options might include adapter kits, which can be helpful if your mounting hardware is rusted or broken. For a simple bolt-on style, you’ll usually just need a wrench. For the slide-on types, you might not need any tools at all. It’s one of the easier DIY repairs you can do on your mower, but getting the right part is 90% of the battle.
Frequently Asked Questions
Why is the rear flap on my mower so important?
That flap, often called a rear discharge guard or grass flap, serves a couple of key purposes. Its main job is safety; it acts as a barrier to stop rocks, sticks, or other debris from being thrown out the back of the mower deck at high speed. Secondly, it helps manage the flow of grass clippings. By containing the clippings for a moment, it allows them to be cut finer and distributed more evenly, which prevents those unsightly windrows of dead grass on your lawn. A missing or broken flap can lead to a poor cut and a potentially dangerous situation.
Can I just run my mower without the rear flap?
I really don’t recommend it. While the mower will technically still cut grass, you’re compromising on safety and quality. Without that flap, there’s nothing to stop a projectile from launching out the back. It also messes with the air pressure under the mower deck, which can result in an uneven cut and clumps of grass being dumped everywhere. It’s a small part that plays a big role. It’s best to replace a damaged one promptly, and you can find some of the best lawn mower rear flap replacements online for a reasonable price.
My old flap is hard and brittle. Is that normal?
Yes, that’s very normal. These flaps are constantly exposed to sun, moisture, grass, and temperature changes. Over time, rubber can dry out and crack, while plastic can become brittle from UV exposure. This is the most common reason they need to be replaced. If your flap no longer bends easily and touches the ground, or if pieces are breaking off, it’s definitely time for a new one.
Are OEM parts better than generic replacements?
This is a classic question. OEM (Original Equipment Manufacturer) parts are guaranteed to fit and perform exactly like the original. They are usually a safe and reliable choice, but they can be more expensive. Generic or aftermarket parts are often more affordable and can be just as good, but you need to do your homework. Read reviews carefully and check the product description to ensure the material quality and dimensions match what you need. Sometimes, a generic part is an OEM part in different packaging.
How difficult is it to replace the rear flap myself?
In most cases, it’s a very simple job that you can do in under 15 minutes with basic tools. For many mowers, it’s as easy as removing two bolts, swapping the old flap for the new one, and tightening the bolts back up. For models with a slide-on channel, you might just pull the old one off and push the new one on. Always make sure the mower is off and the spark plug is disconnected before you start any work for safety.