Tomei Fuel Pressure Regulator Type-S

When upgrading to higher-flow injectors and a larger-capacity fuel pump, the factory fuel pressure regulator quickly becomes a limitation. The OEM regulator is preset from the factory and non-adjustable, restricting tuning flexibility and preventing precise fuel pressure control required for performance-oriented fuel systems. The TOMEI Fuel Pressure Regulator is designed to solve this issue by delivering stable, adjustable fuel pressure to support high-output engine setups.

Featuring an oversized diaphragm, this regulator maintains consistent fuel pressure even during aggressive adjustments, ensuring reliable fuel delivery across a wide range of operating conditions. This proven design allows tuners to accurately dial in fuel pressure without fluctuations that can compromise performance or engine safety.

The regulator body is finished with a hard anodized coating, providing enhanced protection in harsh under-hood environments. This finish resists corrosion, heat, and electrical conductivity while protecting the internal membrane from contaminants such as grit and grime—maximizing long-term durability and operational safety.

Included:

• (1) Fuel Pressure Regulator 
• (2) AN6 1/8NPT 
• (2) #8 Straight 1/8NPT