S4 Quattro Wagon V8-4.2L (BHF) (2008)
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Install in reverse order, paying attention to the following:
‹› Thread of new Heated Oxygen sensor (HO2S) is coated with assembly paste which must not be allowed to ingress into openings in probe.
‹› Re-attach all cable ties in same location on installation.
‹› Secure all hose connections with standard hose clamps.
Tightening Specifications
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If a Heated Oxygen sensor (HO2S) is to be re-used, grease thread only with hot bolt paste. The hot bolt paste must not be allowed to go into
openings in probe.
