Fully reinforced silicone breather hose is designed to replace the crumbling, leaking OEM rubber part. Prevent boost leaks and replace a common failure point with this durable, performance engineered part made from high-quality automotive silicone. This hose runs from the bottom of the intake manifold to the check valve attached to the lower block breather hose.
058 103 221A 058103221A
Available in black only.
Hose clamps included!
1997 - 1999.5 Audi A4 (B5)
1.8T - AEB - Manual Transmission
We now offer an upgrade to the 034Motorsport Billet PCV Check Valve along with this hose.