034Motorsport Silicone PRV to Turbo Inlet Breather Hose for Audi TT Quattro (2000–2002)

Built for the early Audi TT Quattro with the AMU engine, this 034Motorsport silicone hose connects the pressure-regulating valve (PRV) to the turbo inlet hose on 2000–2002 cars. The factory rubber hose at this spot is a very common point of failure. It almost always rips when the turbo inlet hose or the PRV is removed, so it often needs replacing during unrelated work. 034Motorsport constructs this replacement from 4-ply, high-temperature automotive grade silicone, which will not crumble apart or tear the way the factory rubber hose does. It is made in the United States and replaces factory part number 06A103817D.

034Motorsport parts sold by PMB carry a 24-month warranty.

This short hose is part of the crankcase ventilation path on the TT225's AMU engine. The PCV system routes pressurized crankcase gases toward the intake so they burn with the normal charge, and the hoses along that path see heat, pressure, and oil vapor all the time. When the PRV hose splits, unmetered air enters the intake, which can bring on a check engine light for an air intake leak or another airflow-related fault. A severe leak can cause rough running or a misfire, and the area around the hose often shows oil residue. Since the factory hose so often rips during turbo inlet or PRV removal, it makes sense to have this silicone piece on hand before you start that job.

Technical Details

• Manufacturer: 034Motorsport
• Part number: 034-104-2006
• Part: silicone pressure-regulating valve (PRV) to turbo inlet hose
• Application: early Audi TT225 with AMU engine code
• Replaces factory part number: 06A103817D
• Construction: 4-ply, high-temperature automotive grade silicone
• Country of manufacture: United States
• Warranty: 24 months

Common Questions

Why does the factory hose fail so often?
The factory rubber hose almost always rips when the turbo inlet hose or the PRV is removed. The 4-ply silicone version is built to resist that tearing and crumbling.

Which engine is this hose for?
034Motorsport specifies it for the early Audi TT225 with the AMU engine code.

For the early TT225, PMB carries this silicone PRV hose as a direct answer to a weak factory part.

Fitment & Compatibility

Use the fitment table below to check your car before ordering. Make sure your TT Quattro has the AMU engine code. PMB will confirm fit if you send your VIN.