TGK Motorsport PCV Breather Line Kit - Audi EA839

The factory PCV breather system on EA839 engines represents a critical failure point under turbocharged conditions. OEM plastic quick-connects, thin hose construction, and fragile diaphragm check valves are inadequate for high-boost crankcase pressures—particularly on tuned applications where system reliability is non-negotiable. The TGK Motorsport PCV Breather Line Kit completely eliminates these vulnerabilities with precision-engineered components designed for sustained high-performance operation. This system was engineered from the ground up to address every weakness in the OEM design through superior materials science and valve architecture. Available with either TGK Premium Billet Aluminum fittings for maximum durability or TGK OE Style Plastic fittings for cost-effective reliability, both configurations deliver significantly enhanced pressure handling and long-term service life. This is not a band-aid solution—it's a permanent upgrade that supports everything from stock daily drivers to aggressive Stage 2+ builds without compromise. Fits B9/B9.5 S4, S5 and SQ5 Specifications Engine Compatibility EA839 3.0T Construction Option CNC Billet Aluminum Check Valve Design Precision Piston-Style Hose Material FKM-Lined Multi-Ply Silicone Pressure Rating 40+ PSI Tested Installation Direct OE Replacement