Fuel Pulse Damper Billet Alm 6an ORB 40-70PSI

The Fuel Pulse Damper Billet Aluminum 6AN ORB 40-70PSI from Holley is a precision fuel system component engineered to eliminate pressure oscillations and fuel pulsation in high-performance fuel injection systems. Whether you're running a carbureted engine with mechanical fuel pump or a modern EFI setup, fuel pulsation can degrade fuel atomization, reduce combustion efficiency, and accelerate wear on injectors and regulators. This damper solves that problem by absorbing and smoothing fuel pressure spikes, delivering consistent, clean fuel delivery to your engine.

Constructed from lightweight billet aluminum, this fuel pulse damper features a 6AN ORB (O-ring boss) inlet/outlet configuration for secure, leak-free connections to your fuel line assembly. The 40–70 PSI pressure rating matches most street and mild performance fuel systems, accommodating both mechanical and electric fuel pump setups within that operating window. The sealed internal chamber uses a spring-loaded piston design that absorbs pump pulsation before it reaches your injectors, rails, or carb fuel bowl, reducing noise and pressure noise spikes that can trigger false EFI sensor readings or destabilize fuel pressure control.

This damper is ideal for engine builders, street rod enthusiasts, and carbureted-to-EFI conversion projects where stable fuel pressure is non-negotiable. Its compact 4.45 x 4.45 x 4.8-inch footprint and minimal 0.45 lb weight make it easy to mount inline in your fuel system, whether between the pump and filter or downstream near the fuel rail. The billet aluminum construction resists corrosion and thermal stress, ensuring years of reliable service in both stock and heavily modified engines. Pair it with quality fuel line and AN fittings for maximum system reliability.