Home >> Audi >> 2016 >> A3 TDI Prestige >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> EXHAUST SYSTEM (4-Cylinder TDI Common Rail 1.6L; 2.0L 4V Engine) -- (A3 SEDAN) >> 26 Exhaust System >> Selective Catalytic Reduction System >> Reducing Agent Delivery Module, Removing And Installing >> Tightening Specifications