This aftermarket-exclusive valve maintains a continuous flow of coolant through the engine block. Symptoms of a failed coolant bypass valve include illumination of the check engine light. This part restores optimal vehicle performance. Product Features:Direct replacement - ensures a proper fit for original equipment designCost-effective replacement - ideal replacement part for protecting your vehicle from costly engine damageDesign - made of high-quality materials for increased durability and longer service lifeProfessionally tested - this part has undergone extensive vehicle try-on and durability testing to ensure strength, fitment and longevity