A hydraulic lifter, also called a hydraulic tensioner or in English hydraulic valve lifter / hydraulic tappet, is a component of the distribution mechanism of an internal combustion engine. Its main function is to transmit the movement of the camshaft to the valves, while automatically compensating for the clearance between the mechanical components (valve clearance). Audi: 03L 109 521, 03L 109 521 A, 03L109521, 03L109521A, 059 109 521 F, 059 109 521 G, 059 109 521 H, 059109521F, 059109521G, 059109521H, 05L 109 521, 05L109521, 3L 109 521, 3L 109 521 A, 3L109521, 3L109521A, 59 109 521 F, 59 109 521 G, 59 109 521 H, 59109521F, 59109521G, 59109521H, 5L 109 521, 5L109521 VW: 03L 109 521, 03L 109 521 A, 03L109521, 03L109521A, 059 109 521 F, 059 109 521 G, 059 109 521 H, 059109521F, 059109521G,.
