TGK Motorsport PCV Breather Line Kit - Audi EA839

Overview The factory EA839 PCV breather system is one of those components you never think about until it becomes a problem. The OEM assembly relies on plastic quick-connect fittings, thin breather hose, and diaphragm-style check valves that spend their entire life exposed to heat, oil vapor, and boost pressure. On a stock vehicle they generally get the job done. On tuned applications, they become one more potential failure point. The TGK Motorsport EA839 PCV Breather Line Kit replaces the factory assembly with upgraded materials, piston-style check valves, and FKM-lined silicone hose designed to withstand significantly higher pressures while maintaining proper crankcase ventilation. Available with either CNC billet aluminum or OE-style engineering plastic fittings, both versions offer a substantial improvement in durability over the factory breather line while installing exactly like the original. Why We Like It There are plenty of flashy engine bay upgrades that don't actually solve anything. This isn't one of them. At ORT Motorsport, we're big believers in addressing known weak points before they become failures. A failed PCV component can create oil leaks, crankcase pressure issues, and headaches that are completely avoidable. What we like about the TGK kit is that it doesn't reinvent the system. It simply improves every component that commonly wears out. Better hose. Better fittings. Better check valves. Same factory routing. If you're already tuning an EA839 platform, this is the kind of reliability upgrade that makes sense. Specifications Specification Details Engine Compatibility EA839 2.9T / 3.0T Installation Direct OEM Replacement Hose Material FKM-Lined Multi-Ply Silicone Check Valve Precision Piston Style Pressure Tested 40+ PSI Fitting Options CNC Billet Aluminum or OE-Style Plastic Billet Aluminum vs OE-Style Plastic Both kits use the same piston-style check valves and premium FKM-lined silicone hose. Choose billet aluminum if maximum durability is your priority, especially on high-boost or track-driven cars. Choose the OE-style plastic version if you're looking for a reliable replacement that improves upon the factory design while keeping costs down. Features Precision Piston-Style Check Valves Unlike traditional diaphragm valves, the piston-style design delivers consistent sealing under boost while remaining resistant to heat and oil contamination. FKM-Lined Silicone Hose The multi-ply silicone hose features an FKM inner liner that resists oil vapor saturation while maintaining flexibility and long-term durability. Direct OEM Fit No adapters, no modifications, and no rerouting. The kit installs using the factory mounting locations and retains OEM functionality. Built for Boost Pressure tested beyond 40 PSI, making it suitable for stock vehicles through aggressive Stage 2 and hybrid turbo combinations. Frequently Asked Questions Why upgrade the factory EA839 PCV breather hose? The factory system works well when new, but the plastic fittings and diaphragm-style valves become wear items over time. Upgrading before they fail helps maintain proper crankcase pressure and long-term reliability. Is this only for tuned vehicles? No. While tuned cars place greater demand on the PCV system, stock vehicles can also benefit from replacing aging factory components with higher quality materials. What's the difference between the billet and plastic versions? Functionally they're the same. Both use identical check valves and hose construction. The difference is the fittings. Billet aluminum is intended for maximum durability, while the OE-style plastic version offers an excellent balance of cost and reliability. Does this require modifications? No. It is a direct replacement for the factory breather assembly.