Fuelab 51503-1 Series Adjustable Fuel Pressure Regulator - 515

The Fuelab 515 Series Fuel Pressure Regulator is engineered for performance and versatility in demanding fuel delivery systems. This adjustable regulator accepts both port style and non-port style union fittings without interference, making installation straightforward across various setups. Designed to support applications ranging from carbureted systems as low as 1 PSID to fuel injected systems up to 125 PSID, the 515 Series delivers precise fuel pressure control when it matters most.

Key Features:

• Dual -6AN or -10AN inlet ports with single -6AN bottom-mounted return port
• Compatible with gasoline, diesel, methanol, and ethanol fuels
• Precision-machined billet aluminum construction with Type II military-spec anodizing (MIL-A-8625)
• Fine thread pitch adjustment mechanism for precise pressure tuning
• 1/8 NPT gauge port with plug for external pressure gauge monitoring
• 1/8 NPT pressure reference port with barbed fitting included
• Includes versatile mounting bracket and stainless steel hardware
• CARB compliant for street legal applications
• Backed by 2-year limited manufacturer warranty

The Fuelab 515 Series regulator combines race-proven performance with the durability needed for street and track use. Its multi-fuel compatibility and wide pressure range make it an ideal choice for both naturally aspirated and forced induction applications.