1998 Audi A4 Turbocharger Blow-Off & Diverter Valves
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Original (OEM)Turbo & SuperchargersEngine builders have always been looking to maximize the power output and the efficiency of the naturally aspirated engine. One of the best ways to do this is by turbocharging or supercharging the engine since this allows the vehicle to... - Kayser®Turbocharger Cut-Off ValveAudi A4 / A4 Quattro 1.8L 1998, Turbocharger Cut-Off Valve by Kayser®. Do you hear chirping or squealing noise? Has the "power" disappeared from your steering? Does your engine crank slowly and are your lights dim? You may need...High-grade design and construction built to last for yearsPerfect for use in high-speed environments$96.20
- Torque Solution®Blow Off Valve AdapterAudi A4 / A4 Quattro 1.8L 1998, Blow Off Valve Adapter by Torque Solution®. The Torque Solution blow off valve adapter was designed to give you that atmospheric blow off sound your looking for on your turbocharged VW. A simple bolt on...Great sound6061 Billet Aluminum$63.30
- APR®R1 Diverter ValveAudi A4 1.8L 1998, R1 Diverter Valve by APR®. The APR R1 Diverter Valve is a critical performance upgrade recommended at all stages of performance as it replaces the failure prone factory unit. The R1 is designed to withstand extreme...The APR R1 Diverter Valve is a critical performance upgrade recommended at all stages of performanceThe R1 is designed to withstand extreme boost pressures at the highest levels of performance$199.95
1998 Audi A4 Models