472QA-1021200 Timing Chain Tensioner, compatible with models equipped with the 472QA 1.5L plug-in hybrid engine such as the BYD Qin PLUS DM-i 2024. Features a hydraulic spring composite structure for automatic chain tension adjustment, preventing skipped teeth, reducing noise and vibration, ensuring precise valve timing. As a key component of the engine timing system, it meets original factory specifications with stable quality.