Mapleza Gas Can Cap Replacement 4 Pack - Universal Fit 3/5 Gallon Spill-Proof Lids for Fuel & Water Storage, Compatible with Midwest, Plastic & Metal Gas Cans

What It Is

This is a 4-pack of universal gas can caps designed to replace leaky or missing lids on 3/5-gallon fuel and water containers. It’s meant for lawn mowers, trimmers, chainsaws, and other small-engine equipment where you store and transport fuel.

Fitment & Compatibility

Before buying, check three things:

• Container size: Works with most 3- to 5-gallon gas cans, but not 1-gallon or 2.5-gallon cans.
• Neck diameter: Measure the opening—these caps fit standard 2-inch (50mm) and 2.25-inch (57mm) necks. If your can has a metric or odd-sized neck (e.g., some No-Spill or SureCan models), they likely won’t seal.
• Material: Compatible with both plastic and metal cans, but not with “safety” cans that have a built-in flame arrestor or special venting.

Avoid if your can has a proprietary twist-lock or push-button cap system (e.g., VP Racing, Scepter, or older Midwest cans with non-standard threads).

Key Things to Know

• Quality: Caps are made from basic plastic—functional but not heavy-duty. Some users report cracking after a few months in direct sun.
• Installation: No tools required—just unscrew old cap and screw on new one. Make sure the rubber gasket sits flat to avoid leaks.
• Spill-proof design: The caps include a built-in vent and a flip-top spout, but they’re not truly spill-proof if tipped over; they’re more splash-resistant.
• Gotcha: The 4-pack is handy for multiple cans, but the caps are identical—no color coding or size variation, so label your cans if you use different fuels.

Should You Buy It

Buy this if you have a standard 3-5 gallon gas can with a broken or missing cap and want a cheap, universal replacement. Skip it if you need a heavy-duty, leak-proof lid for a specialty can or if your container has a non-standard neck size.