Best Fuel Filter for Lawn Mower (2026): 5 Inline and Cartridge Picks
5 inline and cartridge fuel filters for lawn mowers compared by line size, filter media, pack size and OEM fit, each with an Acre Score.
On this page
Top picks at a glance
As an Amazon Associate I earn from qualifying purchases.
- 1
Best OverallSnwoygr 10 Magnet Pack9.6/10View on Amazon - 2
Best 40-Micron PickStrongthium 691035 Kit9.6/10View on Amazon - 3
Best OEM PickBriggs 691035 2 Pack9.6/10View on Amazon - 4
Best Clamp KitStrongthium 394358 Kit9.5/10View on Amazon - 5
6PCS 1/4 Inch Gas Inline Fuel FiltersView on Amazon - 6
691035 493629 1/4 40 Micron Inline Fuel Filter Fit for BriggsView on Amazon - 7
2 Pack 1/4 Inline Fuel Filter for Briggs Stratton KawasakiView on Amazon - 8
Inline Fuel Filter 1/4"x5/16" 2-PackView on Amazon - 9
HOODELL 2 Pack 11013-7047 Air Filter with Pre FilterView on Amazon
The back shed holds the mower, the trimmer and the cans of fresh fuel. When a mower sputters under load or quits on a warm afternoon, the fuel filter is a small part worth checking early. This roundup names the best fuel filter for lawn mower owners to keep on the shelf, comparing inline and cartridge picks from current listings on fit, media and pack size.
AcreMowerLab earns a commission when you shop through links here. It never changes your price. Affiliate disclosure.
Quick picks
- Best Overall Snwoygr 10 Magnet Pack: 10 pack with built-in magnet; fits 1/4 and 5/16 inch lines Check price on Amazon
- Best 40-Micron Pick Strongthium 691035 Kit: Stated 40-micron media with see-through housing and 4 clamps Check price on Amazon
- Best OEM Pick Briggs 691035 2 Pack: Genuine Briggs and Stratton 691035 replacement in a 2 pack Check price on Amazon
- Best Clamp Kit Strongthium 394358 Kit: 2 filters plus 4 clamps; screen works in either direction Check price on Amazon
Our acreage picks
Snwoygr 10 Pack Inline Fuel Filter with Magnet for Small Engines
10 inline fuel filters with a built-in magnet for 1/4 and 5/16 inch fuel lines on small engines.
Who it's for: owners who service more than one small engine and want spares on the shelf with wide line-size coverage.
Who should skip it: anyone who wants a stated micron figure or a genuine OEM part number.
Read the full review
The Snwoygr 10 pack is the only pick here with a built-in magnet, which the maker says absorbs metal impurities before they reach the engine, plus thickened pleated filter paper meant to block dust and moisture. The listing states fit for 1/4 and 5/16 inch fuel lines and universal use across lawn mowers, generators, ATVs, snowmobiles and garden tillers, with a stated 0.31 inch diameter and 11.34 g weight. No micron figure and no warranty term are stated.
Pros
- 10 filters in the pack, the most spares here
- Built-in magnet plus thickened, pleated filter paper, per the maker
- Fits 1/4 and 5/16 inch lines
- Universal fit for mowers, generators, ATVs and more, per the listing
Cons
- No micron figure is stated
- Universal fit means checking your line size first
- No warranty term is stated
- Magnet benefit is the maker's claim, not a measured figure
Strongthium 40-Micron Inline Fuel Filter Kit with Hose Clamps
40-micron inline fuel filter kit for 1/4 inch lines, with 2 filters and 4 hose clamps.
Who it's for: owners who want a stated micron figure and a see-through housing with clamps in the box.
Who should skip it: anyone set on a genuine OEM part, or anyone running 5/16 inch fuel line.
Read the full review
The Strongthium 691035 kit is the only pick with a stated micron figure: 40-micron media that the maker describes as designed to capture fuel-borne particles before the carburetor. The housing is see-through, so a dirty filter is visible without pulling it off the line, and the kit adds 4 hose clamps. The listing cross-references Briggs and Stratton, Kawasaki, Toro, Craftsman, MTD and Snapper numbers and states plainly that it is an aftermarket part, not an original Briggs and Stratton product.
Pros
- Stated 40-micron filter media, the only micron figure here
- See-through housing shows dirt without removing the filter
- 4 hose clamps included
- Long cross-reference list: 691035, 493629, 84001895 and more
Cons
- Aftermarket part, not an original Briggs and Stratton product, per the listing
- 1/4 inch line only; no 5/16 inch fit stated
- No warranty term is stated
- 2 filters only, fewer spares than the 10 pack
Briggs and Stratton OEM 691035 Fuel Filter 2 Pack
Genuine Briggs and Stratton OEM 691035 replacement fuel filters, 2 pack, plastic cartridge style.
Who it's for: owners with a Briggs engine on the compatibility list who want the genuine part.
Who should skip it: anyone whose engine is not on the list, or anyone who wants a stated micron figure.
Read the full review
The Briggs and Stratton 691035 2 pack is the genuine OEM pick here: the listing calls it a genuine OEM replacement part and gives a long compatibility list of 121S02 engine codes. The spec table lists a plastic cartridge style and a 0.03 kg item weight. No line size, micron figure or warranty term is stated, so this pick is for owners who match the 691035 part number rather than shopping by line size.
Pros
- Genuine OEM Briggs and Stratton replacement part
- Long compatibility list of Briggs engine codes
- 2 filters in the pack
- Vehicle-specific fit for the listed engines
Cons
- Only suits the listed Briggs engines; narrow fit by design
- No line size or micron figure is stated
- No warranty term is stated
- Bulk packed, per the listing
Strongthium 394358s Inline Fuel Filter Kit with Hose Clamps
Inline fuel filter kit for 1/4 inch lines: 2 filters with a non-directional screen and 4 hose clamps.
Who it's for: owners who want clamps in the box and a filter that fits either way round.
Who should skip it: anyone who wants a stated micron figure or a genuine OEM part.
Read the full review
The Strongthium 394358s kit's headline feature is its non-directional screen filter, which the listing says can be used in both directions. The kit includes 2 filters and 4 hose clamps for 1/4 inch ID fuel lines, with a stated 0.25 inch diameter, and cross-references 394358s and 56679 among other numbers. Like its sibling, the listing states it is an aftermarket part, not an original Briggs and Stratton product, and no micron figure or warranty term is stated.
Pros
- Screen filter is non-directional; fits either way round
- 4 hose clamps included
- Broad compatibility: Briggs, Craftsman, Toro, MTD and more
- 2 filters in the pack
Cons
- Aftermarket part, not an original Briggs and Stratton product, per the listing
- No micron figure is stated
- 1/4 inch line only
- No warranty term is stated
ASSOTS Inline Fuel Filter for 1/4 and 5/16 Inch Fuel Lines
Inline plastic fuel filter for 1/4 and 5/16 inch fuel lines, with a long cross-reference list.
Who it's for: owners who need one filter covering either common line size.
Who should skip it: anyone who wants spares on the shelf, clamps in the box, or a stated micron figure.
Read the full review
The ASSOTS filter covers both 1/4 and 5/16 inch fuel lines and cross-references a long list of part numbers, including AM116304, GY20709 and 71-5960. One contradiction: the spec table names the manufacturer as E-YooHoo while the title and bullets brand it ASSOTS; the title and bullets win. It is a single filter with no clamps, no stated micron figure and no warranty term, so it suits a one-off swap rather than stocking the shop.
Pros
- Fits both 1/4 and 5/16 inch lines
- Long cross-reference list: AM116304, GY20709, 71-5960 and more
- Inline plastic style, vehicle-specific fit
- Single filter for a one-off replacement
Cons
- Single filter; no spares and no clamps in the box
- Spec table names a different maker than the brand; trust the title and bullets
- No micron figure is stated
- No warranty term is stated
Other machines to compare
6PCS 1/4 Inch Gas Inline Fuel FiltersCheck price on Amazon
691035 493629 1/4 40 Micron Inline Fuel Filter Fit for BriggsCheck price on Amazon
2 Pack 1/4 Inline Fuel Filter for Briggs Stratton KawasakiCheck price on Amazon
Inline Fuel Filter 1/4"x5/16" 2-PackCheck price on Amazon
HOODELL 2 Pack 11013-7047 Air Filter with Pre FilterCheck price on Amazon
Side-by-side specs
| Pick | Acre Score | Line size | Pack size | Filter media | Clamps included | Warranty |
|---|---|---|---|---|---|---|
| Snwoygr 10 Magnet Pack | 9.6/10 | 1/4 and 5/16 inch | 10 filters | Pleated paper and magnet | Not stated | Not stated |
| Strongthium 691035 Kit | 9.6/10 | 1/4 inch | 2 filters | 40-micron media | 4 hose clamps | Not stated |
| Briggs 691035 2 Pack | 9.6/10 | Not stated | 2 filters | Not stated | Not stated | Not stated |
| Strongthium 394358 Kit | 9.5/10 | 1/4 inch | 2 filters | Screen filter | 4 hose clamps | Not stated |
| ASSOTS Inline Filter | 9.5/10 | 1/4 and 5/16 inch | 1 filter | Not stated | Not stated | Not stated |
Specifications are manufacturer rated as listed, collected 23 October 2026.
Acreage and terrain fit
Snwoygr 10 Magnet Pack
Strongthium 691035 Kit
Briggs 691035 2 Pack
Strongthium 394358 Kit
ASSOTS Inline Filter
Choosing the best fuel filter for lawn mower
Match the fuel line size
Inline filters must match the inside diameter of the fuel line. The ASSOTS and Snwoygr listings state fit for 1/4 inch and 5/16 inch lines, while both Strongthium kits state 1/4 inch line. The Briggs and Stratton listing does not state a line size; it identifies the filter by the 691035 part number, so match that number against your engine.
OEM numbers and aftermarket replacements
The Briggs and Stratton 691035 2 pack is the genuine OEM part, and its listing gives a long list of compatible 121S02 engine codes. The ASSOTS listing cross-references AM116304, GY20709 and 71-5960 among many numbers, and the Strongthium listings cross-reference 691035, 493629, 84001895 and 394358s. Both Strongthium listings state plainly that they are aftermarket parts, not original Briggs and Stratton products. Where a list is long, check your engine model against it rather than trusting the brand name alone.
Filter media: 40 micron, magnet or screen
Only one listing states a micron figure: the Strongthium 691035 kit lists 40-micron filter media, which the maker describes as designed to capture fuel-borne particles before they reach the carburetor. The Snwoygr 10 pack uses a built-in magnet plus thickened, pleated filter paper, which the maker says absorbs metal impurities and blocks dust and moisture. The Strongthium 394358s kit uses a screen filter that the listing calls non-directional, so it fits either way round. The Briggs OEM and ASSOTS listings state no media detail, so compare them on fit instead.
Pack size and spares on the shelf
The Snwoygr pack holds 10 inline filters, the most spares here. The Briggs OEM listing and both Strongthium kits hold 2 filters each, and the ASSOTS listing is a single filter. The two Strongthium kits add 4 hose clamps each, which covers the clamps when a filter is swapped. Keeping a spare filter in the shop means the job is not held up by a parts run. For fuel that sits between mowings, see our best fuel stabilizer for lawn mowers.
Read the manual, keep children and pets out of the yard while you work, wear eye and hearing protection and sturdy footwear, and never exceed the slope rating of your machine. Refuel only with the engine off and cool. See CPSC lawn mower safety. Read our Safety Disclaimer.
Matching It to Your Property
- Shop shelf: the Snwoygr 10 pack keeps the property’s mowers, generator and other small engines covered with spares on hand.
- OEM match: the Briggs and Stratton 691035 2 pack suits owners who want the genuine part number for their Briggs engine.
- Clamp kits: both Strongthium kits include 4 hose clamps, so the clamps are renewed with the filter.
- Quick check: the see-through Strongthium 691035 housing shows dirt without pulling the filter off the line.
The Acre Score explained
The Acre Score weighs performance (fit and filtration), build quality (housing and media), value (pack size and extras), safety (stated features), and warranty (stated term). No safety features or warranty terms are stated here, so those two scores are zero across the picks. How we pick explains the weights.
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Snwoygr 10 Magnet Pack | 9.6 | 30 | 20 | 22 | n/a | 0 |
| Strongthium 691035 Kit | 9.6 | 29 | 20 | 21 | n/a | 0 |
| Briggs 691035 2 Pack | 9.6 | 29 | 20 | 20 | n/a | 0 |
| Strongthium 394358 Kit | 9.5 | 28 | 19 | 20 | n/a | 0 |
| ASSOTS Inline Filter | 9.5 | 28 | 19 | 19 | n/a | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score. Safety counts only for powered gear or where the listing states safety features; where it does not apply, the score is taken over the remaining 90 points.
FAQ: mowing large lots
What size fuel filter does a lawn mower use?
The listings here state 1/4 inch and 5/16 inch fuel line sizes; match your line’s inside diameter to a stated size.
Does the Briggs and Stratton 691035 fit my engine?
The Briggs listing calls the filter a genuine OEM replacement part and gives a long 121S02 compatibility list. Match your engine’s model numbers against it before ordering.
Which way round does an inline fuel filter go?
The Strongthium 394358s listing states its screen filter is non-directional and works in both directions. The other listings state no direction, so check the product marking or the engine manual where one exists.
What does the magnet in the Snwoygr filter do?
The maker claims the built-in magnet absorbs metal impurities and protects the engine, with thickened, pleated filter paper meant to block dust and moisture. Those are the maker’s claims, reported as stated.
More mowing guides
- Best Fuel Stabilizer for Lawn Mowers (2026): 5 Picks for Storage
- How to Clean Lawn Mower Gas Tank
- Riding Mower Maintenance: Step-by-Step Care Guide
- Lawn Tractor Maintenance: Step-by-Step Care Guide
- Best Air Filter for Riding Mower (2026): 5 Compared
- Best Air Filter for Push Mower (2026): 5 Compared
- Best Carburetor Cleaner for Lawn Mower (2026): 5 Compared
- Lawn Tractor Parts: Maintenance and Replacement Guide
