Fitment: Oil pump chain tensioner rail kit is a replacement for Acura TSX, RSX, and replacement for Accord, Civic, CR-V, Element. OEM Numbers: Reference part numbers are 13441 PCX 004, 13441 PCX 000 (chain); 13450 PNA 004 (tensioner); 13460 PNC 004, 13460 PCX 004 (rail). Ensure Normal Lubrication of Engine: Oil pump chain kit provides the lubricating oil required by the engine to ensure proper lubrication of internal components, supporting reliable engine operation. Extend Engine Life: Proper function of the oil pump chain kit helps maintain correct oil pressure, reducing wear on engine parts and contributing to extended engine service life. Improve Vehicle Safety: A fully functional oil pump chain kit enhances the safety and reliability of the engine system by helping prevent engine damage due to oil system failure.