034Motorsport Silicone PRV Pipe to Turbo Inlet Hose for Audi A4, A4 Quattro, and Volkswagen Passat (1999–2006)

Connecting the PRV (pressure regulating valve) pipe to the turbo inlet, this 034Motorsport silicone elbow hose replaces a factory rubber hose that fails often on the Audi A4, A4 Quattro, and Volkswagen Passat. 034Motorsport built it for the B5 and B6 Audi 1.8T. The factory hose almost always rips when the turbo inlet hose or the PRV is removed, so it frequently fails during other work on the intake side. This version is made from 4-ply high-temperature automotive grade silicone that will not crumble apart or tear the way the factory rubber does. It is made in the United States.

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

The hose crosses to factory part number 058133785B. Because the factory part tends to tear on removal, buying this hose before pulling the turbo inlet hose or PRV saves a second trip. On a turbocharged engine, a leak at any hose on the intake path lets in air the engine management did not measure, and an old rubber elbow in this location tends to crack and harden at its connections first. The multi-ply silicone holds its shape against heat in a way aged rubber cannot. 034Motorsport, founded by Javad Shadzi in 2005, develops performance parts and tuning for Audi and Volkswagen vehicles, and its Fremont, California, facility houses its engineering, manufacturing, and tuning departments.

Technical Details

• Manufacturer: 034Motorsport
• Part number: 034-104-2002
• Part: PRV pipe to turbo inlet hose
• Material: 4-ply high-temperature automotive grade silicone
• Factory reference: 058133785B
• Made in the United States
• Warranty: 24 months

Common Questions

What failures does this hose replace?
Cracks, air leaks, and brittle connections are the common failures of the factory hose.

Why does the factory hose break during service?
The factory rubber hose almost always rips when the turbo inlet hose or the PRV comes off.

Fitment & Compatibility

Check the fitment table below for the models and years this hose fits. 034Motorsport designed it for the 1.8T engine, so confirm your engine before ordering. Send PMB your VIN and we will confirm fit.