Tomei Fuel Pressure Regulator Type-S (Universal) - AN6 & #8 Fittings Included - Hard Anodized Adjustable Bypass Regulator. Not Compatible with E85 Ethanol Fuel.

Ensure stable and precise fuel delivery for your high-performance engine with the TOMEI Fuel Pressure Regulator Type-S. When you upgrade to larger injectors and a high-flow fuel pump, the factory non-adjustable regulator becomes a tuning bottleneck, unable to maintain the correct pressures. This TOMEI regulator provides the essential control needed for a properly tuned fuel system. Featuring a hard anodized aluminum body for durability in harsh engine bay environments, the Type-S regulator utilizes a 33mm diaphragm to provide stable fuel pressure control across a wide adjustment range. It maintains the critical pressure differential relative to intake manifold pressure, ensuring optimal fuel atomization and A/F ratio from idle to full boost.

• Essential Fuel System Upgrade: Required when upgrading to larger injectors and high-flow fuel pumps; replaces the restrictive, non-adjustable factory regulator.
• Precise Pressure Control: Features a 33mm diaphragm and adjustability from 2.0 to 8.0 kgf/cm² to maintain stable fuel pressure relative to manifold boost/vacuum for optimal A/F ratio.
• Durable Hard Anodized Construction: Built from aluminum with a hard anodized finish for superior resistance to corrosion, heat, and engine bay contaminants.
• Universal Fit with Included Fittings: Supplied with both AN6 and #8 straight fittings (1/8NPT), the most popular sizes for aftermarket fuel lines, ready to install.
• Compatibility Note: Designed for universal applications but NOT compatible with E85 ethanol fuel. Confirm fuel type compatibility before purchase.