Buy 2004 Audi S4 Engine Timing Chain Tensioner. 2.8 LITER, 6 CYLINDER, lower. 3.2 LITER, lower. A3 Lower, CAMSHAFT, LITER - OEM Audi Part # 021109467 (021-109-467)

Chain Guide. Engine Timing Chain Tensioner. Tensioner Rail.
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. Crank to Idler.

Engine Timing Chain Tensioner

Fits A3, Q7, TT

2.8 LITER, 6 CYLINDER, lower. 3.2 LITER, lower. A3; Lower. CC; Secondary; Lower. Eos; Lower. Eurovan; Lower. Golf, GTI; Lower. GTI; Lower. Jetta; Lower. Passat; Lower. Passat; Secondary; Lower. Q7; Lower. R32; Lower. R32; Lower; Right. Touareg; 3.2L, 3.6L; Lower. Touareg; Crank To Intermed. Shaft. TT; Left. TT; Lower.