594061 Lawn Mower Gas Cap, Engine Fuel Tank Cap Compatible with 799585 799684 fuel tank cap, m230 m110 gas cap, Compatible with 675EXi 725EXi engine (1 Pcs)

What It Is

This is an aftermarket replacement gas cap for the fuel tank on select Briggs & Stratton engines, specifically models like the 675EXi and 725EXi. It seals the tank to prevent fuel spillage and evaporation, and fits mowers and other equipment using those engines.

Fitment & Compatibility

Before buying, check your engine’s model number (e.g., 675EXi or 725EXi) and the existing cap’s part number. This cap replaces OEM numbers 799585 and 799684, and also fits the older m110 and m230 gas caps. Measure the cap’s outer diameter and thread pattern—this is a standard twist-on cap, but thread pitch can vary. Verify the cap’s venting type (vented vs. non-vented) matches your tank’s requirement; a mismatch can cause fuel flow issues or pressure buildup. Not universal for all Briggs engines—only confirmed for the listed EXi series.

Key Things to Know

• Quality: Aftermarket cap, not OEM. Some users report a looser fit or slightly different plastic feel compared to original—test for a tight seal to avoid leaks.
• Installation: No tools needed. Simply twist off old cap and screw on the new one. Takes 30 seconds.
• Common gotcha: If your engine has a fuel tank vent elsewhere, you may need a non-vented cap. This cap is vented by default—check your old cap’s vent hole.
• Return policy: Since fitment can vary, buy from a seller with easy returns if it doesn’t seal properly.

Should You Buy It

This cap is a good budget fix if you have a 675EXi or 725EXi engine and need a quick replacement for a lost or cracked cap. It’s not for critical applications like commercial mowers—go OEM if you need a guaranteed seal or have a different engine model. For occasional home use, it’s fine.