* Compatible with Mercedes-Benz C300/GLA250/GLA45 AMG 2015-2017, C350e/GLC300/Metris 2016-2017. * Reference Number: A2700506100, 2700506100, A2700501147, 2700501147 * OE Replacement brand new camshaft adjuster. * A camshaft adjuster is a component in an engine that is responsible for adjusting the timing of the camshaft. The camshaft is a shaft with eccentric lobes that control the opening and closing of the engine's valves. * The camshaft adjuster ensures that the timing between the camshaft and the crankshaft is accurate, optimizing engine performance and efficiency.There are different types of camshaft adjusters, including hydraulic, mechanical, and electric. Hydraulic camshaft adjusters use oil pressure to adjust the position of the camshaft, while mechanical adjusters use gears or ratchets to change the timing. * Electric camshaft adjusters are controlled by the engine's computer system and use electric motors to adjust the camshaft position. * Overall, the camshaft adjuster plays a crucial role in maintaining proper engine timing and performance. If it malfunctions or fails, it can result in poor engine performance, decreased fuel efficiency, and potential damage to the engine. If you suspect an issue with your camshaft adjuster, it is recommended to have it inspected and repaired by a qualified mechanic.