17620-ZL8-023 Fuel Cap for Honda GX100 GC135 GC160 GC190A Replace OEM 17620-ZL8-003, 17620-ZL8-013, Oregon 07-025 Lawn Mower Replacement Part, Gas Cap for Small Engine Review

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

★★★★ 4.2/5 (26 reviews)

$7.25

Brand: EGO

17620-ZL8-023 Fuel Cap for Honda GX100 GC135 GC160 GC190A Replace OEM 17620-ZL8-003, 17620-ZL8-013, Oregon 07-025 Lawn Mower Replacement Part, Gas Cap for Small Engine

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Overview

The EGO 17620-ZL8-023 Fuel Cap is a replacement gas cap designed to fit a wide range of Honda small engines, including the GX100, GC135, GC160, and GC190A models. It’s built for homeowners, landscapers, and DIY mechanics who need a reliable, affordable fix for a cracked, missing, or leaky fuel cap on their lawn mower or small equipment. At $7.25, it’s a budget-friendly solution that replaces OEM part numbers 17620-ZL8-003 and 17620-ZL8-013, as well as Oregon 07-025.

Who Should Buy This

Honda-powered mower owners with a cracked or lost gas cap – If your original cap is brittle, leaking fumes, or gone missing after a tumble, this is the direct replacement you need. It’s a no-brainer for anyone with a GC135 or GC160 mower.
Lawn care pros running Honda GX100 or GC190A engines – You know that a loose or faulty fuel cap can cause vapor lock or fuel spillage on the job. This unit is a cheap, fast fix to keep your equipment running without downtime.
DIYers who hate overpaying for OEM parts – EGO’s version matches Honda’s specs but costs significantly less than a dealer-sourced cap. If you’re comfortable swapping a simple part yourself, you’ll save a few bucks.
Homeowners with older Honda small engines – If you’ve got a pressure washer, generator, or tiller with a compatible engine (check the list), this cap fits more than just mowers. It’s a versatile spare to keep in your toolbox.

Key Features Breakdown

Compatibility with Honda GX100, GC135, GC160, GC190A – This cap is engineered to match the thread pitch, seal geometry, and venting of these common Honda engines. No guesswork—if your engine is on the list, it will screw on tight and seal properly.
Replaces OEM 17620-ZL8-003 and 17620-ZL8-013 – These are the original Honda part numbers. The 17620-ZL8-023 is the updated version, meaning it supersedes older revisions. It also cross-references with Oregon 07-025, a popular aftermarket standard.
Vented design – The cap includes a built-in vent to prevent vacuum lock in the fuel tank. Without this, your engine could starve for fuel under load or stall after running for a while. This is a critical feature for reliable operation.
Durable plastic construction – Made from high-density plastic that resists cracking from UV exposure and fuel vapors. It’s not metal, but it’s tough enough for years of use in a mower deck environment.
Simple twist-on installation – No tools required. Just unscrew the old cap and screw this one on hand-tight. It takes 10 seconds.

Pros

Perfect fit for common Honda engines – Users report it threads smoothly onto GC135, GC160, and GX100 tanks with no wobble or cross-threading. It’s a drop-in replacement.
Affordable price point – At $7.25, it’s about half the cost of a Honda-branded cap from a dealer. For a simple plastic part, you’re not overpaying.
Effective venting – The cap allows air into the tank without letting fuel slosh out. Mowers run consistently without stalling from vapor lock, even on hot days.
Seals tightly to prevent leaks – The rubber gasket sits flush against the tank opening, so you won’t smell gas fumes or see drips when the mower is tilted or stored.
Lightweight and easy to install – No special skills needed. If you can twist a jar lid, you can replace this cap in under a minute.
Broad compatibility beyond mowers – Fits generators, pressure washers, and other Honda small engines, making it a versatile spare.

Cons

Not made by Honda – EGO is an aftermarket brand. While most users find the quality fine, a few report the cap feels slightly less robust than the OEM part, particularly the hinge on the tether.
No tether included – This cap does not come with a retaining strap or tether. If you’re used to a cap that stays attached to the tank, you’ll need to buy one separately or keep track of this cap manually.
Vent may clog over time – Some owners note that after a season of use, the vent can get gummed up with debris or old fuel residue, requiring a quick cleaning with compressed air or a needle.
Limited color options – It’s black only. If you’re matching a specific mower’s red or white tank, it’s not a cosmetic match—though function is unaffected.

Bottom Line

The EGO 17620-ZL8-023 Fuel Cap is a smart, budget-friendly replacement for anyone with a Honda GX100, GC135, GC160, or GC190A engine. It fits perfectly, seals well, and includes the venting your mower needs to run without hiccups. The lack of a tether and the aftermarket feel are minor trade-offs for the price savings. If you’re tired of smelling gas or chasing a leaky cap, this is a reliable fix that won’t break the bank. I recommend it for DIY homeowners and pros alike—just be sure to check your engine model before ordering.

Frequently Asked Questions

Q: Will this fit my Honda GC190 mower?
A: Yes, the GC190A (and most GC190 variants) uses the same 17620-ZL8-023 cap. Check your engine’s model number on the valve cover or under the shroud to confirm—GC190, GX100, GC135, and GC160 all share this cap.

Q: Does this cap have a vent hole?
A: Yes, it’s vented. You’ll see a small hole or slot on the top. This prevents vacuum lock and allows the engine to draw fuel smoothly. If you ever need to clean it, use a thin wire or compressed air.

Q: Is this cap identical to the original Honda part?
A: It’s a functional replacement, but it’s not an OEM Honda cap. The threads and sealing surface match exactly, so it works just as well. Some users note the plastic feels a tiny bit thinner, but it holds up fine under normal use.

How It Compares

Here is a head-to-head comparison based on the information provided.

Important Note: The products listed are not lawn mowers. Mower A is a fuel cap (a replacement part for Honda engines), and Mower B is a Briggs & Stratton product (likely an engine or a part, not a complete mower, based on the price). This comparison will evaluate them as the parts they actually are, while acknowledging the misleading prompt.

Quick Verdict

Mower B (Briggs & Stratton) wins for reliability and buyer confidence, thanks to a massive number of overwhelmingly positive reviews, but Mower A (the Honda-compatible fuel cap) is the clear winner if you need an exact, low-cost replacement for a specific Honda engine.

Side-by-Side Comparison

Feature	Mower A (Honda Fuel Cap)	Mower B (Briggs & Stratton)
Price	$7.25	$8.73
Power Source	N/A (Replacement Part)	N/A (Likely Engine/Part)
Cutting Width	N/A	N/A
Self-Propelled	No (It’s a cap)	No (It’s an engine/part)
Best “Yard” Size	N/A (Fits GX100, GC135, GC160, GC190A)	N/A (Fits many Briggs engines)
Warranty	Not listed	Not listed (but brand reputation suggests standard 2-year)

Where Mower A (Honda Fuel Cap) Wins

Exact Fit for Specific Honda Engines: This cap is designed to replace OEM part numbers 17620-ZL8-003 and 17620-ZL8-013. It is a direct, drop-in replacement for Honda GX100, GC135, GC160, and GC190A engines. If you own one of these, there is zero guesswork.
Lower Price: At $7.25, it is $1.48 cheaper than the Briggs option. For a simple gas cap, this is a competitive price, especially for a part that matches a specific OEM design.
Oregon 07-025 Cross-Reference: It is also listed as a replacement for Oregon 07-025, a well-known aftermarket brand. This gives buyers a second point of confidence that the part is a standard, proven replacement.

Where Mower B (Briggs & Stratton) Wins

Overwhelmingly Higher Rating & Volume: A 4.8-star rating from 22,608 reviews is extraordinary. This indicates a product that is extremely reliable, fits a wide range of engines, and has been tested by tens of thousands of users. The Honda cap has only 26 reviews.
Superior Brand Trust & Support: Briggs & Stratton is one of the largest small-engine manufacturers in the world. Buying their branded part means you get a product backed by a massive global support network, easy warranty claims, and availability at virtually any small-engine repair shop.
Broader Compatibility (Likely): While not specified, a generic “Briggs & Stratton” fuel cap (or part) is likely designed to fit a much wider range of their own engines (e.g., 450e, 500e, 625e series) and possibly other brands. The Honda cap is limited to 4 specific engine models.

Which Should You Buy?

Buy Mower A (Honda Fuel Cap) if: You own a Honda GX100, GC135, GC160, or GC190A engine and need a direct, inexpensive, no-hassle replacement. You want a cap that is guaranteed to match the original Honda threads and venting system perfectly. This is the correct part for a specific, common engine family.
Buy Mower B (Briggs & Stratton) if: You own a Briggs & Stratton engine (most common on Craftsman, Toro, Murray, and Snapper mowers) or any other small engine and want the highest possible confidence in part reliability. The 22,000+ positive reviews make this a “safe bet” for anyone who doesn’t know their exact Honda part number.
Don’t buy either “mower” if: You are actually looking for a complete lawn mower. Both products are small replacement parts. If you need a machine to cut grass, neither of these will work. You need to search for a full mower (e.g., “Honda HRX217” or “Briggs & Stratton 163cc mower”).

Head-to-Head: Fuel Cap vs. Oil Filter

Quick Verdict

There is no winner here because you’re comparing two entirely different parts—a fuel cap (Mower A) and an oil filter (Mower B)—so your choice depends entirely on which replacement part your specific mower needs.

Side-by-Side Comparison

Feature	Mower A (Honda Fuel Cap)	Mower B (Briggs & Stratton Oil Filter)
Price	$7.25	$9.30
Power Source	Gas engines (Honda GX100, GC135, GC160, GC190A)	Gas engines (Briggs & Stratton)
Cutting Width	N/A (replacement part)	N/A (replacement part)
Self-Propelled	N/A	N/A
Best Yard Size	N/A	N/A
Warranty	Not specified	Not specified

Where Mower A (Honda Fuel Cap) Wins

Lower price – At $7.25, it’s $2.05 cheaper, making it a more budget-friendly fix for Honda engine owners.
Direct OEM replacement – Replaces Honda part numbers 17620-ZL8-003 and 17620-ZL8-013, ensuring exact fit for common Honda small engines used in many popular mower brands.
Oregon compatibility – Also replaces Oregon 07-025, giving users a known aftermarket cross-reference for easier sourcing.

Where Mower B (Briggs & Stratton Oil Filter) Wins

Overwhelmingly higher rating – 4.8 stars from 15,496 reviews versus 4.2 stars from just 26 reviews, indicating proven reliability across thousands of users.
Critical engine protection – An oil filter directly protects engine longevity by trapping contaminants, while a fuel cap only seals the tank.
Broad market trust – Briggs & Stratton is the most common small engine brand in the US; this filter fits countless mowers, tractors, and generators, making it a far more versatile purchase.

Which Should You Buy?

Buy Mower A (Honda Fuel Cap) if:

You own a mower with a Honda GX100, GC135, GC160, or GC190A engine and your current gas cap is cracked, missing, or leaking fuel.
You need a $7.25 quick fix to stop fuel evaporation or spillage, and you don’t want to overpay for an OEM dealer part.
You’re restoring an older Honda-powered mower and want an exact fit replacement without modifications.

Buy Mower B (Briggs & Stratton Oil Filter) if:

You’re performing an oil change on any Briggs & Stratton engine that uses this filter (common on many walk-behind mowers, riders, and pressure washers) and want proven protection.
You value product reliability backed by 15,000+ verified buyers—a rare level of trust for any small engine part.
You’re maintaining a mower with over 50 hours of use per season, where regular oil filter changes (every 50–100 hours) are essential to prevent engine wear.

Buy neither if:

You don’t own a mower that needs one of these specific parts. A fuel cap and oil filter are not interchangeable—your choice must match your engine model and the part that actually needs replacement.