Cobb In-Tank 4.5 Bar Fuel Pressure Regulator Kit Subaru WRX / BRZ / Toyota GR86 22-26 | 346750

Fitment

• Subaru WRX 2022–2025

• Subaru Outback XT 2020–2025

• Subaru Outback Wilderness 2022–2025

• Subaru Ascent 2019–2025

• Subaru Legacy 2020–2025

• Subaru BRZ 2022–2026

• Toyota GR86 2022–2026

Ensure consistent fueling under high-demand conditions with the COBB In-Tank 4.5 Bar Fuel Pressure Regulator, a direct-fit upgrade engineered to enhance the performance and reliability of your Subaru or Toyota’s fuel system. Designed to operate within legal emissions standards under EPA Anti-Tampering Policy provisions, this regulator increases the in-tank pressure to 4.5 bar, helping to prevent cavitation when the High Pressure Fuel Pump (HPFP) is working at maximum output.

This regulator is a simple yet impactful upgrade for vehicles running higher power levels, ethanol-based fuels, or demanding driving conditions. By raising low-side pressure, the system maintains more stable fuel delivery, improving consistency, protecting fuel components, and supporting increased performance—without requiring custom fabrication.
Note: Not legal for sale or use in California on emission-controlled vehicles. CARB certification is currently pending.

From daily driving to aggressive tuning setups, maintaining stable fuel pressure is critical. This regulator mitigates cavitation at the HPFP, especially when running E85 or elevated boost levels, making it a valuable reliability and performance upgrade.

Key Features

• Direct replacement for the factory in-tank regulator

• Raises fuel pressure to 4.5 bar

• Supports E85 fuel

• Helps prevent HPFP cavitation under high load

• Compatible with stock tuning and COBB OTS maps

• Designed within EPA Anti-Tampering Policy guidelines (excluding California)

Upgrade your vehicle’s fueling consistency and reliability with a high-quality, emissions-legal (outside California) pressure regulator engineered specifically for modern Subaru and Toyota platforms.