The Wrightwood Racing Porsche Engine Oil Pump Return Tube O-Ring is a high-quality replacement part for the original O-ring found in the engine oil pump return tube of Porsche vehicles. This O-ring is designed to create a tight seal between the oil pump and the return tube, preventing any leaks or loss of oil pressure. Made with durable materials, this O-ring is built to withstand the high temperatures and pressures of the engine oil system. It is a direct fit for the OEM part number 99970711360 and is compatible with various Porsche models. This O-ring is an essential component for maintaining the proper functioning of the engine oil system and ensuring optimal engine performance.