Removal & Installation
- Front HO2S is mounted in exhaust pipe below exhaust header. Rear HO2S is mounted behind catalytic converter. HO2S is equipped with a permanent pigtail which must be protected from damage when HO2S is removed. Ensure HO2S is free of contaminants. Avoid using cleaning solvents of any type.
- HO2S may be difficult to remove when engine temperature is less than 120°F (48°C). Always use anti-seize compound on threads before installation. Tighten HO2S to specification. See TORQUE SPECIFICATIONS .