Carbon Fiber Air Box Intake for Audi and VW

Thermal Shielded Airflow for the EA113 1.8T and 1.9 TDI Engine Families

Who It’s For: Designed for enthusiasts driving Volkswagen Group vehicles from the late 90s and early 2000s, specifically those running the 20V 1.8T (EA113) and the 1.9 TDI workhorse engines. Whether you are daily driving a Golf MK4 or tuning an Audi TT, this is for the driver who knows that lower intake air temperatures (IATs) equal more consistent power.

The Problem: Factory plastic airboxes on the EA113 and 1.9 TDI platforms are prone to significant heat soak. Sitting deep in the engine bay, the stock housing absorbs ambient heat, warming the air before it even hits the turbocharger. This leads to pulled timing and a noticeable loss in throttle response during spirited driving or summer months.

The Solution: This CDA (Carbon Dynamic Airbox) system replaces the restrictive factory box with a genuine carbon fiber cylindrical housing. We utilize carbon fiber because of its incredibly low thermal conductivity, creating a dedicated cold-air chamber. By isolating the washable filter element from the engine’s radiant heat and using a dynamic frontal intake, we create a pressurized "supercharging" effect that forced-feeds cooler, denser air into the manifold.

Why This is the Ultimate Upgrade

• Carbon Thermal Barrier: Unlike aluminum or plastic intakes, the carbon fiber shell rejects engine bay heat, keeping the internal air charge dense and oxygen-rich.
• Venturi Effect Design: The cylindrical internal flow deflector accelerates air velocity, reducing turbulence and allowing the turbo to spool faster.
• High-Flow Washable Element: Includes a multi-layer filtering element that provides superior filtration over stock paper filters while significantly increasing CFM capacity.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• Audi 80 IV (B4) 2.8 / Quattro (1991-1994)
• Audi A3 (8L) 1.8 T / Quattro (1996-2003)
• Audi A3 (8L) 1.9 TDI (1996-2001)
• Audi A4 (8D, B5) 1.8 T / Quattro (1997-2000)
• Audi A4 (8D, B5) 1.9 TDI (1995-2000)
• Audi A6 (4B/C5) 1.8 T / Quattro (1997-2005)
• Audi TT I (8N) 1.8 T / Quattro (1998-2006)
• Chrysler PT Cruiser 2.2 CRD (2001-2010)
• Fiat Stilo / Multi Wagon (192) 2.4 20V Abarth (2001-2010)
• Peugeot 306 2.0 HDI (1999+)
• Seat Ibiza II 1.9 TDI (1999-2002)
• Seat Leon I 1.8 20V T Cupra (1999-2005)
• Seat Leon I 1.9 TDI (1999-2006)
• Skoda Octavia I 1.8 Turbo / RS (1996-2010)
• Volkswagen Bora (A4) 1.9 TDI (1998-2002)
• Volkswagen Clasico / Jetta (A4) 1.8 T / GTI (1997-2005)
• Volkswagen Clasico / Jetta (A4) 1.9 TDI (1997-2005)
• Volkswagen Golf IV (1J1, 1J5) 1.8 Turbo / GTI (1997-2005)
• Volkswagen Golf IV (1J1, 1J5) 1.9 TDI / 4-Motion (1997-2005)
• Volkswagen New Beetle 1.8 Turbo
• Volkswagen Passat (3B2/3B5) 1.8 Turbo (1996-2000)
• Volkswagen Sharan I (7M) 1.8 T (1997-2010)
• Volvo V70 2.4 I GLT (1997-2000)

Reference Performance Data:

B4, 8L, 8D, B5, 4B, C5, 8N, 192, 1J1, 1J5, 162, A4, 3B2, 3B5, 7M, 174 HP, 150 HP, 180 HP, 110 HP, 90 HP, 75 HP, 121 HP, 170 HP, 101 HP, 115 HP, 144 HP

The Performance Promise

Buy with confidence. This system is the preferred choice for tuners looking to eliminate the heat soak issues inherent in the EA113 engine family. Backed by real automotive expertise and designed for a precise fit.