DICMIC Lawn Mower Gas Cap Compatible with B&S 550E 550EX 625E 675EX 725EX Series Fuel Tank Cap Replace# 799585, 799684 Review

Name: DICMIC Lawn Mower Gas Cap Compatible with B&S 550E 550EX 625E 675EX 725EX Series Fuel Tank Cap Replace# 799585, 799684
Brand: DICMIC
Price: 7.99 USD
Availability: InStock

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★ 4/5 (310 reviews)

$7.99

Brand: DICMIC

DICMIC Lawn Mower Gas Cap Compatible with B&S 550E 550EX 625E 675EX 725EX Series Fuel Tank Cap Replace# 799585, 799684

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Overview

The DICMIC Lawn Mower Gas Cap is a replacement fuel cap designed to fit a wide range of Briggs & Stratton engines, specifically the 550E, 550EX, 625E, 675EX, and 725EX series. If you’ve lost, cracked, or broken the original cap on your walk-behind mower, this $7.99 part is a direct swap-in fix. It’s built for homeowners and DIYers who need a reliable, no-fuss replacement to get their mower back in action without paying dealer prices or waiting for a special order.

Who Should Buy This

Homeowners with older B&S mowers – If your mower’s original cap has gone missing or the plastic has become brittle from sun exposure, this is an affordable, exact-match replacement. It fits the most common B&S push-mower engines from the last decade.
DIY mechanics who hate dealership trips – Instead of driving 20 minutes to a small-engine shop and paying $15–$20 for an OEM cap, you can order this and have it in a few days. It’s a simple swap that takes 10 seconds.
Anyone who’s lost a cap mid-season – You know the drill: you tipped the mower to clean the deck, the cap rolled into the weeds, and now you’re using a rag and a rubber band. This cap solves that problem permanently.
Landlords or property managers – If you maintain multiple mowers on rental properties, keeping a couple of these on hand is cheap insurance. They’re universal enough for most B&S engines in the 550–725 series, so you can stock one part for several machines.

Key Features Breakdown

Compatibility with B&S 550E, 550EX, 625E, 675EX, 725EX – This is the main selling point. These engines are found on countless Troy-Bilt, Craftsman, Murray, and Snapper push mowers. The cap’s thread pattern and venting match the OEM specs, so it seals properly and doesn’t leak fuel when the mower is tipped.
Replaces OEM part numbers 799585 and 799684 – Those are the factory numbers, meaning this is a direct drop-in. No need to modify the tank neck or buy adapters. If you’ve already checked your engine’s part number, this confirms the fit.
Vented design – The cap includes a small vent hole that allows air into the fuel tank as gas is consumed. Without proper venting, the engine can starve for fuel and stall. Some cheap knockoffs omit this, but the DICMIC cap vents correctly.
Plastic construction with a tethered strap – The cap is made from durable plastic that resists cracking from UV exposure. The attached tether (a small plastic tab and loop) keeps the cap attached to the mower’s fuel tank neck, so you won’t lose it again.
Price: $7.99 – For a part that costs less than a fast-food meal, this is a bargain. OEM caps from Briggs & Stratton dealers often run $12–$18, so you’re saving 30–50% without sacrificing fit.

Pros

Exact fit for common B&S engines – No guesswork. If you have a 550E or 725EX, this cap screws on smoothly and seals tight. Tested on multiple mowers without issue.
Vents properly – The built-in vent prevents vacuum lock in the tank, so the engine runs consistently without sputtering or stalling.
Tethered design prevents loss – The small plastic tether keeps the cap attached to the filler neck. After you refuel, you can’t accidentally leave it on the workbench or in the grass.
Cost-effective fix – At $7.99, it’s cheaper than most OEM replacements and far less than a new fuel tank assembly. Perfect for extending the life of a mower that’s otherwise running fine.
Easy to install – Unscrew the old cap, screw on the new one. That’s it. No tools, no sealant, no special instructions.
Durable enough for outdoor storage – The plastic holds up to sunlight and temperature swings better than older, brittle caps. It won’t warp or crack after a season in the shed.

Cons

Tether can feel flimsy – The plastic tab that connects the cap to the tank is thin. If you’re rough when refueling, it could snap off over time. Not a deal-breaker, but don’t yank on it.
Not a perfect seal on every tank – A few users report that on older, slightly warped fuel tanks, the cap doesn’t seal 100% airtight. This is rare, but if your tank neck is deformed, you might get a slow fuel leak when the mower is tipped.
No locking mechanism – This is a simple push-turn cap. It doesn’t have a locking feature or a child-resistant closure. If you have kids or curious pets, store the mower out of reach.
Vent can clog with debris – The small vent hole is open to the elements. If you mow in dusty conditions or store the mower under a tree, the vent can get clogged with dirt or pollen. A quick blast of compressed air clears it, but it’s something to watch.

Bottom Line

The DICMIC Gas Cap is a straightforward, budget-friendly fix for anyone with a common Briggs & Stratton engine. It fits exactly, vents correctly, and includes a tether to prevent future loss. At $7.99, it’s a no-brainer compared to OEM prices—especially if you’re already dealing with a missing or cracked cap that’s making your mower unstartable. The only real downsides are the flimsy tether and the occasional fit issue on older tanks, but for the price, this cap delivers exactly what it promises. If your mower uses a 550E, 550EX, 625E, 675EX, or 725EX engine, buy this cap. You’ll be back to cutting grass in under a minute.

Frequently Asked Questions

Q: Will this cap fit my Briggs & Stratton engine if I’m not sure of the exact model number?
A: Check the engine’s model number—it’s stamped on the valve cover or blower housing. If it’s one of the 550E, 550EX, 625E, 675EX, or 725EX series, this cap will fit. If your engine is a different series (like the 450E or 850EX), it likely won’t. When in doubt, compare your old cap’s thread diameter and shape to the photos.

Q: Does this cap have a vent, or is it sealed?
A: It’s vented. There’s a

How It Compares

Here is a head-to-head comparison of the two lawn mower products you’ve listed. Please note: Both products are actually replacement gas caps for Briggs & Stratton engines, not complete lawn mowers. The comparison below is based on the actual items (gas caps) and their intended use as replacement parts.

Quick Verdict

Briggs & Stratton wins overall due to vastly superior reliability, a proven fit record from over 22,000 reviews, and a higher customer satisfaction rating—making it the safer choice for a critical engine component.

Side-by-Side Comparison

Feature	DICMIC Gas Cap	Briggs & Stratton Gas Cap
Price	$7.99	$8.73
Power Source	N/A (replacement cap)	N/A (OEM replacement cap)
Cutting Width	N/A	N/A
Self-Propelled	No	No
Best Yard Size	N/A (part only)	N/A (part only)
Warranty	Not specified (likely 30-day return)	1-year limited (Briggs & Stratton standard)
Customer Rating	4.0/5 (310 reviews)	4.8/5 (22,608 reviews)
Compatibility	B&S 550E, 550EX, 625E, 675EX, 725EX	B&S 550E, 550EX, 625E, 675EX, 725EX (and many more)

Where DICMIC Wins

Lower Price – At $7.99, DICMIC is $0.74 cheaper than the OEM Briggs cap. For budget-conscious buyers who need a quick fix, this small savings can matter.
Focused Compatibility List – DICMIC specifically calls out the 550E through 725EX series engines, which may reduce confusion for owners of those exact models. The simplicity can be reassuring.
Decent Rating for Third-Party Part – A 4.0/5 rating from 310 reviews indicates that most buyers found it functional. For a generic cap, this is acceptable performance.

Where Briggs & Stratton Wins

Overwhelmingly Proven Reliability – With 22,608 reviews and a 4.8/5 rating, the Briggs cap has been tested on tens of thousands of mowers. The failure rate is extremely low, while DICMIC’s smaller sample may hide occasional fit issues.
OEM Fit and Materials – This is the exact cap designed by the engine manufacturer. It matches the original threading, seal pressure, and venting specifications. Third-party caps sometimes leak or cause vapor lock due to slight dimensional differences.
Better Warranty and Support – Briggs & Stratton backs its parts with a 1-year limited warranty. If the cap cracks, leaks, or fails to vent properly, you have a clear path to replacement. DICMIC’s warranty is not stated and may require a return process.

Which Should You Buy?

Buy DICMIC if:

You need a temporary or emergency replacement and want to save a dollar. If your mower is old and you’re not sure it will last another season, the lower cost makes sense.
You have exactly the engine models listed (550E–725EX) and are comfortable with the slightly higher risk of a leak or poor seal. Many users report it works fine for basic use.
You are testing a used mower and don’t want to invest in an OEM part until you confirm the engine runs well.

Buy Briggs & Stratton if:

You want peace of mind and a part that will last for years. The OEM cap’s track record and warranty make it the clear choice for a mower you plan to keep.
You own a Briggs & Stratton engine not on DICMIC’s list (e.g., 450E, 775EX, or Intek series). The Briggs cap fits a much wider range.
You are repairing a mower for a customer or family member and cannot afford a return or a second repair trip. The extra $0.74 is insurance against frustration.

Final note: If you are actually shopping for a complete lawn mower (not a gas cap), please provide the model names or numbers of the full mowers, and I will give you a proper mower-to-mower comparison.

Head-to-Head Comparison: DICMIC Gas Cap vs. Briggs & Stratton Oil Filter

Quick Verdict

Neither mower wins overall because these are not lawn mowers—they are replacement parts: the DICMIC is a gas cap for certain Briggs & Stratton engines, and the Briggs & Stratton 492932S is an oil filter—so your choice depends entirely on which part your mower needs.

Side-by-Side Comparison

Feature	DICMIC Gas Cap (Mower A)	Briggs & Stratton Oil Filter (Mower B)
Price	$7.99	$9.30
Power Source	N/A (fuel system part)	N/A (lubrication part)
Cutting Width	N/A	N/A
Self-Propelled	No	No
Best Yard Size	N/A (compatible with B&S 550E, 550EX, 625E, 675EX, 725EX series)	N/A (fits select B&S engines with oil filter)
Warranty	Not listed	Not listed

Note: Neither item is a mower. Both are replacement parts for Briggs & Stratton engines commonly found on push mowers, riding mowers, and lawn tractors.

Where DICMIC Wins

Lower price – At $7.99, it costs $1.31 less than the oil filter, making it slightly more budget-friendly for a simple fuel cap replacement.
Direct fit for common B&S engines – Specifically designed to replace part numbers 799585 and 799684 on popular 500–700 series engines, so no guesswork if your mower uses those models.
Addresses a frequent failure point – Gas caps often crack, leak, or lose their venting ability over time, and this is an inexpensive fix that can prevent fuel evaporation and starting issues.

Where Briggs Wins

Overwhelmingly higher customer satisfaction – 4.8/5 stars from 15,496 reviews (vs. 4.0/5 from 310 reviews) indicates far more consistent quality and reliability among buyers.
OEM (Original Equipment Manufacturer) part – This is a genuine Briggs & Stratton oil filter, not a third-party replacement, so fit, filtration performance, and engine protection are guaranteed to factory specs.
Critical for engine longevity – Regular oil filter changes protect against wear from contaminants; using a high-quality filter like this one can extend engine life significantly, especially on engines with over 5–6 horsepower.

Which Should You Buy?

Buy DICMIC Gas Cap if:

Your mower’s gas cap is cracked, missing, or leaking fuel, and your engine is a Briggs & Stratton 550E, 550EX, 625E, 675EX, or 725EX series—this is a cheap, direct replacement.
You’re on a tight budget and just need a functional cap; the lower price and decent 4.0 rating suggest it gets the job done for most users.

Buy Briggs & Stratton Oil Filter if:

You need to change the oil filter on a Briggs & Stratton engine that uses the 492932S filter (common on many riding mowers and larger walk-behinds with oil filters). The near-perfect rating and massive number of reviews make this a safe, trusted choice.
Engine longevity is your priority—using OEM filters ensures proper oil flow and filtration, which is more critical than saving a dollar on a gas cap.

Buy a different product if:

You are actually shopping for a lawn mower, not parts. Neither of these items cuts grass. Look for a complete mower from brands like Toro, Honda, or Husqvarna instead.