New Cylinder Head VW Audi 1.8L 20V – Fits Beetle, Golf, GTI, Passat, Jetta, A4 (BARE CYLINDER HEAD)

New VW / Audi 1.8L 20V Turbo Aluminum Bare Cylinder Head

High-Quality OEM Replacement Bare Casting

Restore your engine’s mechanical integrity with this all-new 1.8L 20V bare cylinder head casting, specifically engineered for VW and Audi 1.8T longitudinal and transverse applications. This fresh, high-density aluminum casting features reinforced water jackets and upgraded metallurgy to eliminate the thermal stress cracking common in original factory units. While the gasket surface is pre-milled, every casting undergoes an in-house precision verification to ensure the Surface Roughness (Ra) meets the strict requirements for Multi-Layer Steel (MLS) gaskets. We perform final guide sizing and cam journal alignment checks on our Rottler equipment, ensuring a drop-in fit for your existing valvetrain components with zero interference. Pressure tested to 60 PSI and featuring ultrasonically cleaned oil and cooling galleries, this bare head provides a high-durability foundation for high-boost forced induction systems.

🛠️ In-House Machining Process

• Debris-Free Preparation: Every new casting is chemically cleaned and blown out to remove all residual machining oils, metal shavings, and manufacturing debris. This ensures your oiling system remains uncontaminated from the first start-up.

• In-House Precision Machining: Unlike “shelf-stock” heads, we perform all final machine work in-house. This includes final guide sizing and precision valve seat cutting to ensure perfect geometry and clearances before the head reaches the assembly bench.

• Pressure & Integrity Testing: To go beyond the factory standard, we pressure-test every head to 60 PSI. This verifies that the casting is free of porosity leaks or internal defects that could compromise the cooling or oiling systems.

• Dimensional Inspection: Our technicians perform a multi-point inspection of the gasket-sealing surface and bore alignment. This ensures the head is perfectly flat and meets tight OEM tolerances for a flawless fit.

• Professional Assembly & Setup: Valvetrain components are installed and verified in a clean-room environment. We check spring heights and seal seating to ensure the assembly is balanced and ready for high-performance use.

• Vacuum-Seal Verification: Every intake and exhaust port is Vacuum Tested. This guarantees a 100% airtight seal between the valves and seats, ensuring maximum compression and peak performance right out of the box.

📊 Technical Specifications

• Engine Size: 1.8L 20V
• Material: High-Grade Aluminum
• Condition: Brand New
• Included Components: Bare Casting (No Valves, Springs, or Camshafts)
• Fitment Type: Direct Replacement
• Core Return Required

🚛 Fitment Data

Common Applications:

• Audi A4: 2000 Audi A4 (1.8L Engine ID ATW)
• Audi A4: 2001–2006 Audi A4 (1.8L)
• Volkswagen Beetle: 2001 Volkswagen Beetle (1.8L Turbo Gas Engine ID APH)
• Volkswagen Beetle: 2001 Volkswagen Beetle (1.8L Turbo Gas Engine ID AWV)
• Volkswagen Beetle: 2002–2005 Volkswagen Beetle (1.8L Turbo Gas)
• Volkswagen Beetle: 1999–2000 Volkswagen Beetle (1.8L Turbo Gas)
• Volkswagen Golf: 2000 Volkswagen Golf (1.8L)
• Volkswagen Golf: 2001 Volkswagen Golf (1.8L Engine ID AWD)
• Volkswagen Golf: 2001 Volkswagen Golf (1.8L Engine ID AWW)
• Volkswagen Golf: 2007 Volkswagen Golf (1.8L)
• Volkswagen Golf GTI: 2000 Volkswagen Golf GTI (1.8L)
• Volkswagen Golf GTI: 2001 Volkswagen Golf GTI (1.8L Engine ID AWD)
• Volkswagen Golf GTI: 2001 Volkswagen Golf GTI (1.8L Engine ID AWW)
• Volkswagen Golf GTI: 2002–2006 Volkswagen Golf GTI (1.8L)
• Volkswagen Jetta: 2000 Volkswagen Jetta (1.8L Turbo Gas)
• Volkswagen Jetta: 2001 Volkswagen Jetta (1.8L Turbo Gas Engine ID AWD)
• Volkswagen Jetta: 2001 Volkswagen Jetta (1.8L Turbo Gas Engine ID AWW)
• Volkswagen Jetta: 2002–2005 Volkswagen Jetta (1.8L Turbo Gas)
• Volkswagen Jetta GLI: 2002–2005 Volkswagen Jetta GLI (1.8L)
• Volkswagen Passat: 2000 Volkswagen Passat (1.8L Turbo Gas Engine ID AUG)
• Volkswagen Passat: 2001–2005 Volkswagen Passat (1.8L Turbo Gas)
• Volkswagen Passat: 1999–2000 Volkswagen Passat (1.8L Turbo Gas Engine ID ATW)