The Murray 7019377YP Lawn Tractor Gas Cap / Gauge is a replacement fuel tank component that seals the tank opening while providing a visual indication of the fuel level. The cap helps keep dirt and debris from entering the fuel tank and reduces fuel exposure during normal operation. Its built-in gauge allows the operator to monitor available fuel when checking the tank. Replacing a da... https://www.wholetoolbox.com/murray-7019377yp-lawn-tractor-gas-cap-gauge/7019377YP.html