Buy 2004 Audi S4 4.2L V8 A/T Base Sedan Engine Timing Chain Tensioner. A6; Lower; Right. Allroad - OEM Audi Part # 079109507G (079-109-507-G, 079109507C)

Engine Timing Chain Tensioner.
An oil pressurized Tensioner that keeps the Chain that runs from the crankshaft to camshaft or the Chain that runs from camshaft to camshaft, from becoming loose and jumping a tooth or more causing Engine damage or out of sync crankshaft to camshaft Timing. Power Take-Off.

Engine Timing Chain Tensioner

Fits A6, allroad, RS4, S4

A6; Lower; Right. Allroad. Cabriolet S4; Center; Lower. S4, RS4; Center; Lower.