TGK Motorsport PCV Breather Line Kit - Audi EA839

$349.99 USD

Sale Sold out

Overview

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.

Specifications

Engine Compatibility	EA839 2.9T / 3.0T
Construction Options	CNC Billet Aluminum or OE Style Plastic
Check Valve Design	Precision Piston-Style
Hose Material	FKM-Lined Multi-Ply Silicone
Pressure Rating	40+ PSI Tested
Installation	Direct OE Replacement

Configuration Options

	Billet Aluminum Kit	OE Style Plastic Kit
Fitting Material	CNC-Machined 6061-T6 Aluminum	High-Grade Engineering Plastic
Check Valve Design	Precision Piston-Style	Precision Piston-Style
Pressure Rating	40+ PSI	40+ PSI
Durability	Maximum Long-Term Reliability	Enhanced Over OEM
Application	Track/High-Boost/Extreme Duty	Street/Stage 1-2/Cost Effective

Features & Benefits

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Precision Piston-Style Check ValvesMachined piston design provides instantaneous sealing under boost with consistent operation regardless of heat cycling or oil vapor contamination, validated beyond 40 PSI continuous operation.

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Premium Construction OptionsChoose between CNC-machined 6061-T6 billet aluminum for ultimate durability or high-grade engineering plastic for enhanced reliability over OEM at reduced cost.

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FKM-Lined Multi-Ply Silicone HoseReinforced silicone construction with inner FKM fluoroelastomer liner prevents oil vapor saturation and external seepage while maintaining structural integrity under extreme conditions.

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OE-Correct IntegrationDirect replacement design maintains factory air-oil separator routing and engine cover fitment while preserving both OEM vacuum reference points without modifications or adapters.

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Intelligent Pressure ManagementAt idle and light load, crankcase vapors evacuate through post-throttle vacuum; under boost conditions, piston valve immediately seals and redirects flow to turbo inlet vacuum source.

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High-Performance ValidatedEngineered as a permanent solution for stock through Stage 2+ applications without degradation—eliminates the OEM system as a consumable failure point across all power levels.

Frequently Asked Questions

Why does the factory PCV breather system fail on EA839 engines?

The OEM system uses plastic quick-connects and diaphragm-style check valves that degrade under repeated heat cycling and boost pressure. As these components weaken, they allow boost pressure into the crankcase, forcing oil past seals and reducing system efficiency.

What's the difference between billet aluminum and OE style plastic options?

Both configurations use identical precision piston-style check valves and FKM-lined hoses. The billet aluminum option provides maximum durability for extreme duty applications, while the OE style plastic offers enhanced reliability over factory components at a more accessible price point.

How do piston-style check valves improve performance over OEM?

The precision-machined piston design provides immediate sealing response under boost with higher effective flow area and consistent operation regardless of temperature or oil vapor exposure, unlike flexible diaphragms that lose sealing capability over time.

Does this system require any modifications for installation?

No modifications required. The kit integrates directly with the factory air-oil separator and engine cover while maintaining both OEM vacuum reference points and proper system operation logic without adapters or rerouting.

Can this handle high-boost tuned applications safely?

Absolutely. Each valve is pressure-tested beyond 40 PSI and the complete system is validated for everything from stock daily drivers to aggressive Stage 2+ builds without performance degradation or reliability concerns.