Briggs & Stratton Grass Bags: Finding the Right Fit
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Briggs & Stratton is best known for the small engines that power a huge number of walk-behind and riding mowers, and the company also supplies genuine replacement parts, including grass bags. A grass bag (also called a grass catcher or bagger) clips onto the back or side of a mower and collects clippings so you do not have to rake. Over time the fabric tears, the frame bends or the bag simply wears thin, and a replacement mower grass catcher is often the easiest fix. The trick is finding the exact one that fits, and this guide shows first-time owners how to do that.
These five Briggs & Stratton grass bags are all genuine OEM parts that differ by part number, and the part number, not the look of the bag, is what decides whether it fits your mower.
Briggs & Stratton Lawn Mower Bags Compared
Briggs & Stratton
Briggs & Stratton 1703764SM 15.9 x 16.5 Grass Bag
Price and specifications are read from the Amazon product page and can change.
Briggs & Stratton 1703764SM 15.9 x
Best for: Mowers needing the 15.9 x 16.5 bag
Pros
- Genuine OEM part
- Made in United States
- Size stated in title
Cons
- Listed dimensions differ from title
Best for: Owners matching part number 7074426YP
Pros
- Genuine OEM part
- Light at 1 pound
Cons
- No capacity listed
- Compatible models not named
Best for: Mowers that take part 7100433YP
Pros
- Genuine OEM part
- Built-in door
- 55-gallon listed capacity
- Heavy duty material
Cons
- Fit list not on listing
| Part | OEM part number | Made in | Listed weight | Notable detail |
|---|---|---|---|---|
| Briggs & Stratton 7100433YP Grass Bag | 7100433YP | China | 2.5 lb | Door, 55-gallon capacity |
| Briggs & Stratton 7074426YP Grass Bag | 7074426YP | China | 1 lb | Not listed |
| Briggs & Stratton 1703764SM Grass Bag | 1703764SM | United States | 1 lb | 15.9 x 16.5 in title |
| Briggs and Stratton 5104878FS Bag | 5104878 | Not listed | 2.9 lb | Plastic, multi-color |
| Briggs and Stratton 7019250YP Grass Bag | 7019250YP | China | 1 lb | Win Bagger |
How to Find Your Mower Model Number First
Before looking at any bag, find your mower’s model number, because that is how you confirm which Briggs grass bag fits your mower. On most walk-behind mowers, the model and serial numbers are printed on a sticker or metal plate on the rear of the deck, near the handle bracket, or under the grass bag opening. On riding mowers and lawn tractors, check under the seat, along the frame near the rear wheel, or on the steering column. Take a photo of the label so you have it handy.
Keep in mind that the engine has its own separate model number stamped on the engine shroud. For grass bags, you want the mower’s model number, not the engine’s. The owner’s manual usually has a parts list with the correct bag part number, and if you have lost it, the parts diagrams for your model will show it too. Our Briggs lawn mower parts guide explains more about reading those diagrams.
Briggs & Stratton 7100433YP Grass Bag With Door
The Briggs & Stratton 7100433YP Grass Bag is the only listing here that names a door in its title. A door on a grass bag is usually a flap or opening that lets clippings go in or makes emptying easier, but the listing does not describe how the door works on this model, so check the product photos to see it.
This is a genuine O.E.M. (original equipment manufacturer) part, meaning it comes from the brand rather than a third-party copy. The listing gives the most detail of the five: a 55-gallon capacity, heavy duty material, a weight of 2.5 pounds and dimensions of 17.4 x 14.45 x 4.57 inches, which likely describe the folded package. It is made in China and the listing only says it fits various Briggs & Stratton models, without naming which ones.
Buy the Briggs 7100433YP grass bag with door only if your manual or parts diagram lists part 7100433YP. If it does, this is a direct match. If not, one of the other part numbers here may be the right one.
Briggs & Stratton 7074426YP Grass Bag for Exact Part Matches
The Briggs & Stratton 7074426YP Grass Bag is another genuine O.E.M. replacement part. The listing describes it as fitting various Briggs & Stratton models and made in China, with a weight of 1 pound and dimensions of 13.38 x 11.25 x 3.25 inches.
That is all the listing says. It does not give a capacity, material or list of compatible mowers. For a parts purchase like this, that is not unusual. Grass bags are sold by part number, and the part number printed in your manual is what matters.
If your parts list shows Briggs 7074426YP, this is the bag to order. Anyone who finds a different number should not assume this one will fit just because it looks similar in photos, since frames and mounting hooks vary between mower decks.
Briggs & Stratton 1703764SM 15.9 x 16.5 Grass Bag Made in the USA
The Briggs & Stratton 1703764SM 15.9 x 16.5 Grass Bag is the only one of these five listed as manufactured in the United States. Its title gives a size of 15.9 x 16.5, presumably inches, which can help you compare it with your old bag if the label has worn away.
The specifications list the product at 10.37 x 12.37 x 4.58 inches and 1 pound, which does not match the title size. The most likely explanation is that one figure is the bag and the other is the shipping package, but the listing does not say which. Like the others, it is a genuine O.E.M. part that fits various Briggs & Stratton models, with no model list.
Choose the Briggs 1703764SM grass bag when your manual calls for that part number. The stated size is useful as a double-check, not a substitute for the part number.
Briggs and Stratton 5104878FS Bag as a Genuine Replacement
Best for: Win Bagger owners needing part 7019250YP
Pros
- Genuine OEM part
- Win Bagger named in title
Cons
- No size or capacity listed
Briggs & Stratton
Briggs and Stratton 5104878FS Bag
Price and specifications are read from the Amazon product page and can change.
Briggs and Stratton 5104878FS Bag
Best for: Owners with part number 5104878
Pros
- Genuine OEM replacement
- Plastic multi-color build
Cons
- Very sparse listing details
- Dimensions look like placeholders
The Briggs and Stratton 5104878FS Bag is sold as a genuine OEM Briggs & Stratton replacement bag, part number 5104878. The “FS” at the end is part of the listing’s part number, and the model number field shows 5104878, so look for either form in your manual.
The listing is thin. It names plastic as the material, a multi-color finish and a weight of 2.9 pounds, the heaviest of the five, but its 1 x 1 x 1-inch dimensions look like placeholders rather than real measurements. It does not state where it is made, its capacity or which mowers it fits.
Order the Briggs 5104878FS bag only if 5104878 appears on your parts list. Because the listing gives so little detail, compare the photos with your old bag before installing.
Briggs and Stratton 7019250YP Win Bagger
The Briggs and Stratton 7019250YP Grass Bag is described in its title as a Win Bagger. The listing does not explain the term, so treat it as the name the parts catalog uses for this bag. It is a genuine O.E.M. replacement part, made in China, weighing 1 pound, and it fits various Briggs & Stratton models.
Its dimensions are listed as 1 x 1 x 1 inches, which again is not a real measurement, and no capacity is given. Owners who see “Win Bagger” or part 7019250YP on their mower’s parts list are the ones this bag is for.
If your parts list names a different bag, skip it and look for the matching number.
How to Choose the Right Briggs & Stratton Lawn Mower Bag
Match the part number first. This is the single most important rule. Each bag here is labeled with an OEM part number: 7100433YP, 7074426YP, 1703764SM, 5104878 or 7019250YP. Find your mower model number, look up its parts list, and order the bag with the same number. The words “fits various Briggs & Stratton models” in every listing do not mean any bag fits any mower.
Check the old bag. Many grass bags have a tag or printed number sewn into the fabric or stamped on the frame. If your manual is gone, this can lead you straight to the correct part.
Look at the frame. Some replacement bags are fabric only and reuse your existing metal frame, while others include it. None of these listings clearly says whether a frame is included, so compare photos with your old catcher or ask the seller.
Think about features. If emptying is a chore, the 7100433YP lists a door and a 55-gallon capacity. If you care where parts are made, the 1703764SM is the one listed as made in the United States.
Consider whether you need a bag at all. Cordless mowers from other makers, such as a battery powered lawn mower, typically use their own bags, so a Briggs & Stratton part will not suit those.
FAQ
Which Briggs grass bag fits my mower?
The one whose part number matches your mower’s parts list. Find the mower model number on the deck or frame label, then check the manual or parts diagram for the grass bag part number.
What does OEM mean on a grass bag?
OEM stands for original equipment manufacturer. It means the part comes from Briggs & Stratton rather than an aftermarket maker, so it matches the original design.
Is the engine model number the same as the mower model number?
No. The engine has its own number on the engine itself. For a grass bag, use the mower’s model number from the deck or frame label.
Can I use a bag with a different part number if it looks the same?
It is risky. Mounting hooks, frame size and chute openings differ between mowers, so a similar-looking bag may not attach securely.
Do these bags include the frame?
The listings do not say. Compare the photos with your current bag, and if the old frame is still straight, you may only need the fabric bag.
