The HPS Black Silicone Breather+Bypass Valve Hose Kit For 03-06 TT Golf 1.8T AWP MK4 is ready to ship today, with the paperwork and specs that back it up.

Petroleum contact requires the correct lining, so fuel and oil routing needs the right specification. Measure inner diameter at the fitting rather than estimating by eye.
The hps black silicone breather ships protected, because a damaged part helps nobody.
Drivers choose the hps black silicone breather here for honest specification detail and quick dispatch.
Buyers comparing the hps black silicone breather will find the specification detail on this page rather than in a catalog footnote.
The hps black silicone breather listed here is checked against your vehicle before dispatch.
Every hps black silicone breather order goes through the same fitment review.
Ordering the hps black silicone breather takes a minute and the confirmation reaches you straight away.
Our team knows the hps black silicone breather well, so ask if anything about the specification is unclear.
Part details
- Material: Silicone
- Finish: Black
- 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: Black
- 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-BLK, 571934BLK, 06A103221AN, 06A145712C
Our fitment desk exists precisely for the listings where the specification is easy to misread.
Keep shopping: Hoses & Fittings · HPS Black 3-Ply Reinforced Silicone Breather Hose Kit For 95-98 Nissan Skyline GTR RB26DETT Twin Turbo (R33) · HPS Black Ancillary Hose Kit (Bypass Coolant Hose) For 01-05 Mazda Miata 1.8L Non Turbo (NB2) · full catalog
Orders placed before early afternoon usually leave our USA warehouse the same business day, with tracking emailed at label creation.
Further reading from a neutral source: the Car Care Council maintenance tips.
Frequently asked questions
Can you check fitment before I order?
Send your VIN or your year, make and model and our fitment desk confirms the part against manufacturer data before it ships. The check is free and usually answered the same business day.
How long does delivery take?
We ship from a USA warehouse with quick dispatch, and delivery estimates appear at checkout once you enter your address.
What if it does not fit?
Contact support before removing or returning anything, so the right process starts on the first message and nothing is voided by accident.
Is this checked before shipping?
We verify diameter and reinforcement specification on every hose order.
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