Briggs & Stratton 795027 Fuel Tank Cap For 134400 L-Head engines, 7-12.5 HP Vertical Engines

What It Is

The Briggs & Stratton 795027 fuel tank cap is a vented replacement cap designed for 134400 L-Head engines and other 7–12.5 HP vertical shaft Briggs engines. It seals the fuel tank, prevents spillage, and allows proper air flow to avoid vapor lock in push mowers, riding mowers, and small tractors.

Fitment & Compatibility

• Engine models: Fits Briggs & Stratton 134400, 135200, 138400, 146400, 156400, 165400, 168400, 185400, 190400, 191400, 192400, 193400, 194400, 195400, 196400, 197400, 198400, 199400 L-Head engines (7–12.5 HP vertical).
• Tank type: Use only on plastic fuel tanks with a standard 1.5-inch (38mm) threaded neck. Not for metal tanks or non-threaded openings.
• OEM vs aftermarket: This is genuine Briggs & Stratton OEM. Aftermarket caps (e.g., Stens, Oregon) may fit but vary in venting quality.
• Check before buying: Measure your tank opening diameter (center to center of threads) to confirm 1.5 inches. Verify your engine model number (stamped on blower housing or valve cover) includes one of the above series.

Key Things to Know

• Vented design: The cap has a small internal vent that can clog with debris or old fuel. If your mower runs rough or stalls after refueling, clean the vent hole with a paper clip.
• Installation: Screw on by hand until snug—over-tightening can crack the plastic tank or strip threads. No tools required.
• Common gotcha: This cap does not fit Briggs Quantum or Intek engines (they use a different thread pattern). Double-check your engine series before ordering.
• Durability: UV-resistant plastic, but prolonged sun exposure can cause brittleness after 3–5 years. Replace if you see cracks or fuel smell.

Should You Buy It

This is a direct-fit, OEM replacement for any 7–12.5 HP vertical L-Head Briggs engine with a plastic tank. If your old cap leaks, won’t seal, or has a clogged vent, this cap solves it for under $10. Avoid if your engine uses a metal tank or is a Quantum/Intek series—those need a different cap. Simple fix, high reliability.