Consider the HPS Blue Silicone Breather+Bypass Valve Hose Kit For 03-06 TT Golf 1.8T AWP MK4 sourced: we stock it, verify it and send it out fast.

Clamp choice matters: constant tension or lined clamps protect the hose surface over heat cycles. Measure inner diameter at the fitting rather than estimating by eye.
Shops order the hps blue silicone breather from us in volume because the data on the page is accurate.
If your build is unusual, tell us and we will confirm the hps blue silicone breather against it.
The hps blue silicone breather ships protected, because a damaged part helps nobody.
Drivers choose the hps blue silicone breather here for honest specification detail and quick dispatch.
Buyers comparing the hps blue silicone breather will find the specification detail on this page rather than in a catalog footnote.
The hps blue silicone breather listed here is checked against your vehicle before dispatch.
Every hps blue silicone breather order goes through the same fitment review.
What you are buying
- Material: Silicone
- Finish: Blue
- Category: Hose Kits
- Price: $160.31 with free shipping over $99
- Availability: in stock, dispatched from the USA
Manufacturer specifications
Unlike other breather hose kits on the market, 57-1934 features a specially developed fluoroelastomer layer that is able to withstand prolonged exposure to oil and fuel. HPS oil-resistant fluoroelastomer lined silicone hoses can provide superior resistance to the harshness of gasoline and automotive oils. The fluoroelastomer acts as a protective layer where the fluid flowing through the hose would typically degrade silicone hoses. With the fluoroelastomer liner, we can minimize permeation, evaporation, and degradation of our silicone hose.
HPS fluoroelastomer lined hose has excellent resistance to high temperatures, ozone, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics, and many organic solvents and chemicals. Fluoroelastomer can handle the occasional flow of ethanol based fuels.
- Material: 3-Ply Reinforced Silicone
- Color: Blue
- Ideal replacement or upgrade for OEM or aftermarket parts
Breather Hose, Valve Cover (OEM part# 06A103221AN)
Boost Pressure Control Line (OEM part# 06A145712C)
- The premium grade high-heat resistance 3-ply reinforced silicone hoses are made with correct bends and curves to ensure a perfect fitment.
- Prevent and fix the coolant leaking and engine over heating problem caused by cracked, damaged or collapsed OEM rubber hoses. Made with correct bends and curves for perfect fitment.
- Race proven design with long lasting quality and engineered for extremely high temperature service (Max. 350F) and prolonged exposure to under-hood and coolant heat.
- Includes 100% stainless steel industrial grade embossed hose clamps which would not cut through the silicone hose.
Application:
For 2003-2006 Audi TT 1.8T Turbo Late AWP Engine
For 2003-2006 Volkswagen Golf 1.8T Turbo Late AWP Engine (MK4)
For 2004-2005 Volkswagen Jetta 1.8T Turbo Late AWP Engine
Remark:
Installation: Silicone hose water permeation rate is 10 to 15 times greater than standard EPDM rubber hose. Checking water level regularly is highly recommended when silicone coolant hoses are used in a daily driving vehicle.
Product Content:
- 1 Set x Breather + bypass valve (BPV) Hose Kit
Hardware if Any is Shown in the Picture Above
The product does not come with manual/instruction, Professional Install Recommended
Cross Reference Number:
- 57-1934-BLUE, 571934BLUE, 06A103221AN, 06A145712C
Every order gets a fitment review before dispatch, and anything doubtful gets a message rather than a shipment.
See also: Hoses & Fittings · HPS Black Silicone Radiator Hose Kit For 99-01 Jeep Cherokee 4.0L (XJ) Right Hand Drive · HPS Red Silicone Heater Hose Kit For 06+ Lexus GS/IS/RC-Series 2.5L 3.5L V6 · full catalog
Same business day dispatch applies to orders placed before early afternoon, and every parcel travels tracked.
A neutral reference for this work is the NHTSA vehicle safety hub.
Quick answers
How do I know this is the right part?
The application text on this page lists what the part serves. If your vehicle is not clearly covered, send the VIN and we will rule on it before you pay.
Do you ship the same day?
Same business day dispatch applies to orders placed before the early afternoon cutoff, with tracking that updates at every carrier scan.
What if it does not fit?
If the part does not fit, message our support desk with the order number and we will arrange an exchange or refund. Keep the packaging until the test fit is done.
Is the part inspected before dispatch?
Lines and fittings are checked for pressure rating, inner diameter and ply count before shipping.
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