Material: Aluminium Operating Mode: Hydraulic Manufacturer : 06E109217H, 06E109217AN Fitting Position: Upper Left Vehicle Fitment: Compatible with A4 B7 (2005–2008), A6 C6 (2004–2009), A8L D3 (2005–2010) Interchange : 06E109217AN Item Size: 19cm x 17cm x 9cm The upper left timing chain tensioner is a critical component in the engine's timing system, designed to maintain proper chain tension for accurate valve timing.This hydraulic tensioner consistent performance, contributing to smooth and efficient engine.Constructed from aluminium, the unit provides strength and resistance to operational wear.Engineered to meet specifications, this tensioner installs in the upper left position and is compatible with specified model years of A4 B7, A6 C6, and A8L D3 vehicles.Its compact dimensions allow for straightforward integration within the engine bay.Matching OEM part numbers direct interchangeability, simplifying replacement during maintenance or repair.