The BRIGGS & STRATTON 843825 Engine Oil Pump helps circulate engine oil to support proper lubrication and reliable engine operation. Designed as a replacement oil pump, it draws oil from the engine sump and moves it through the lubrication system to help deliver oil to internal components that require lubrication. Proper oil circulation helps reduce friction, manage heat, minimize com... https://www.wholetoolbox.com/briggs-stratton-843825-engine-oil-pump/843825.html