VSPZ tensioner pulley: The size: 17*76*26 The OE NO.:1027404 6168156 6501088 6789631 7431275380 88WF6A228 AC 96WF6A228 AA 7431271914 1271914 1275380 7064724 9146249 032145276 03C145299 J The Reference NO.: INA: 534013330 GATES : T38304 SKF : VKM 34040 SKF : VKM 36120 SNR : GA357.13 INA : F -551853 SNR:GA355.23 Tensioners are belt tensioners used in automotive drivetrains. The structure tensioner is mainly composed of a fixed casing, a tensioning arm, a wheel body, a torsion spring, a rolling bearing and a spring bushing, etc. It can automatically adjust the tensioning force according to the different tightness of the belt, making the transmission system stable, safe and reliable.