Fuelab 51505-1-S-G Series EFI Fuel Pressure Regulator - 515 6AN 10AN

The Fuelab 51505-1-S-G is a precision 515 Series adjustable fuel pressure regulator engineered for EFI applications requiring reliable fuel system control. Designed with performance and flexibility in mind, this regulator accepts both port-style and non-port style union fittings without interference, making installation straightforward across a wide range of fuel system configurations.

Key Features:

• Dual -6AN or -10AN inlet ports and one -6AN return port located on the bottom for flexible plumbing options
• EFI pressure range up to 125 PSID for high-performance fuel-injected applications
• Compatible with gasoline, diesel, methanol, and ethanol fuels
• Precision-machined billet aluminum construction with Type II anodize finish per military spec 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 for manifold vacuum connection
• Versatile mounting bracket included with stainless steel hardware
• Backed by Fuelab's 2-year limited warranty

The 515 Series regulator delivers the precision fuel pressure control demanded by modern EFI systems while maintaining the durability and quality Fuelab is known for in motorsports and high-performance applications.