The Briggs and Stratton Genuine OEM Outer Element Air Filter 841497 is an essential component for maintaining the performance of your lawn mower engine. This air filter is specifically designed to ensure that only clean air is allowed into your engine, preventing harmful debris from causing damage. The 841497 model is compatible for use in the Vanguard 40HP W/Oil Guard commercial engine, providing long-lasting and reliable protection. Trust in Briggs and Stratton's expertise and quality with this genuine OEM air filter.