Fuelab 52503-3-L-T Fuel Pressure Regulator TBI In-Line Large Seat -6AN

The Fuelab 52503-3-L-T is a 525 Series adjustable fuel pressure regulator designed specifically for throttle body injection (TBI) applications. This in-line regulator features a large seat design and offers exceptional flexibility for tight engine bay installations.

Key Features:

• In-line design with -6AN inlet and -6AN return port aligned for compact installations
• Large seat configuration optimized for TBI fuel systems
• Adjustable pressure range supports applications from 1 PSID up to 125 PSID
• Fine thread pitch adjuster for precise pressure tuning
• 1/8 NPT gauge port with plug for external fuel pressure gauge monitoring
• 1/8 NPT pressure reference port with barbed fitting included
• Compatible with gasoline, diesel, methanol, and ethanol fuels
• CNC-machined billet aluminum construction with military-spec Type II anodizing (MIL-A-8625)
• Includes versatile mounting bracket with stainless steel hardware
• Accepts both port-style and non-port-style union fittings without interference

The 525 Series regulator positions the return port in-line with the inlet rather than on the bottom, making it ideal for installations where space is limited. Backed by Fuelab's 2-year limited warranty, this regulator delivers precise fuel pressure control for performance TBI applications.