Since 1921, Cloyes has been the trusted leader in automotive timing systems. In some applications the engine oil pump sprocket can be a critical component or adjacent to the engine’s timing system. Cloyes engine oil pump sprockets are precision-tooled with exact tooth geometry, a perfectly matched bore, and off-set for a superior fit, reliability, and long-term performance. To ensure total system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.