VW B5 Passat / Audi 1.8T K04 Hybrid Turbo Inlet Pipe

Part Number: AUT-B5-003

Upgrade your 1.8T turbo setup with the Autobahn Autoworx K04 Hybrid Inlet Pipe, engineered for improved airflow and turbo efficiency on K04 and hybrid turbo applications. Designed as a high-flow replacement for restrictive factory inlet piping, this upgrade supports better spool characteristics, improved throttle response, and increased overall performance.

This inlet pipe is specifically designed for B5 chassis 1.8T platforms and integrates factory-style connections for PCV, diverter valve, and N75 systems, making it a practical bolt-on solution for performance builds.

Features

• High-flow K04 / hybrid turbo inlet design
• 50mm turbo inlet opening for improved airflow
• 3-inch MAF housing compatibility
• Designed for K04-001, K04 hybrids, and aftermarket “China K04” turbos
• Maintains OEM-style PCV, DV, and N75 connections
• Improves turbo efficiency and response
• Durable performance silicone construction
• Direct-fit replacement for factory inlet piping

Fitment

Compatible with Volkswagen and Audi 1.8T B5 platform vehicles, including:

• 1998–2005 Volkswagen Passat B5 1.8T
• 1996–2005 Audi A4 B5 1.8T (K04 / hybrid turbo applications)

⚠️ Fitment may vary depending on turbo configuration and intake setup. Always verify turbo inlet size before installation.

Installation Notes

• Designed for K04 and hybrid turbo setups only
• Minor trimming may be required depending on engine bay configuration or aftermarket components
• Professional installation recommended for best fitment and sealing

What's Included

• (1) High-flow K04 Hybrid Turbo Inlet Pipe

Brand Information – Autobahn Autoworx

Autobahn Autoworx hose kits are backed by a 5-year warranty. All coolant hoses utilize 3-ply construction, while boost, breather, ISV, and intake/inlet hoses are reinforced 4-ply silicone for maximum durability in performance and daily-driven applications.