When you're turning up the boost, tuning for power, or just doing things the right way from the start, ARP’s 204-4104 head stud kit is the standard. Designed specifically for VW/Audi 1.8T 20V engines, this kit replaces the factory torque-to-yield bolts with premium-grade 8740 chromoly steel studs, delivering unmatched clamping force and durability.
Used in builds from street-tuned GTIs to full-race Audi TTs, ARP studs provide reliable head gasket sealing under extreme cylinder pressures. Each stud is centerless ground for perfect concentricity, and threads are rolled after heat treatment for maximum fatigue strength. The result? It's far superior performance over OEM bolts—especially in turbocharged and track applications.
Whether you're pushing 20+ psi or simply want insurance against failure, ARP is the proven solution. This kit includes ten studs, ten 12-point nuts, ten hardened washers, and ARP’s ultra-torque assembly lubricant.
Kit Features:
- Part Number: ARP 204-4104
- Application: VW/Audi 1.8T 20V (all variants: 06A & 058 blocks)
- Material: 8740 chromoly steel
- Finish: Black oxide
- Includes: Studs (M10), nuts, washers, ARP Ultra-Torque lube
- Reusable: Yes – unlike OEM stretch bolts
Don't gamble with torque-to-yield fasteners on a high-performance 1.8T. Whether you're running a stock KO3 or big-frame turbo, head sealing integrity is mission-critical. This is a no-compromise upgrade, and ARP is the brand we trust for every serious engine build.
