Briggs & Stratton 5044K Fuel Tank Cap

What It Is

The Briggs & Stratton 5044K Fuel Tank Cap is a replacement cap for small engines on lawn mowers, tractors, and other outdoor power equipment. It seals the fuel tank to prevent leaks, spills, and debris entry while allowing proper tank ventilation.

Fitment & Compatibility

• Check your engine model: This cap fits most Briggs & Stratton engines and many other brands (Toro, Snapper, Craftsman, Murray, etc.) with a standard 1.5-inch (38mm) threaded tank opening.
• Measure your current cap diameter: If your cap is 1.5 inches across the threads, this is likely a match.
• OEM vs. aftermarket: This is a genuine Briggs & Stratton OEM part, not a universal or aftermarket copy—better fit and seal reliability.
• Venting style: It’s a non-vented cap (vented through the tank or other cap port). If your machine requires a vented cap, this won’t work.

Key Things to Know

• Quality: Durable plastic with a rubber gasket that resists fuel and cracking. Holds up better than many cheap aftermarket caps.
• Installation: Screws on/off by hand in seconds—no tools needed.
• Common gotcha: The gasket can be stiff when new; hand-tighten only. Over-tightening can strip threads or crack the cap.
• Venting confusion: If your engine sputters or stalls after tightening, your tank may need a vented cap—this one is non-vented.

Should You Buy It

Yes, if you have a standard 1.5-inch threaded fuel tank and need a reliable, OEM replacement that seals well and lasts. Skip it if your machine requires a vented cap or has a non-standard opening size.