Fuel Pulse Damper Billet Alm 6an ORB 40-100PSI

The Fuel Pulse Damper Billet Aluminum 6AN ORB 40-100PSI from Holley is engineered to smooth fuel pressure fluctuations in performance fuel systems, eliminating pressure spikes that damage injectors and destabilize engine tuning. This compact damper is essential for any serious fuel system upgrade, particularly in turbocharged, supercharged, or carbureted applications where fuel pump pulsation creates harmonic pressure waves. Built for high-performance enthusiasts and professional mechanics, it bridges the gap between raw power and reliability by maintaining stable fuel delivery under demanding conditions.

Constructed from precision-machined billet aluminum, this damper features a 6AN ORB (O-ring boss) inlet and outlet for reliable SAE J518 Code 61 fitting compatibility and leak-free connections. The internal poppet valve design absorbs pump pulsation across the 40–100 PSI operating range, protecting fuel injectors from pressure spikes while maintaining consistent feed pressure to the fuel rail. The compact form factor—just 4.4 x 4.3 x 4.7 inches and 0.5 lbs—allows flexible mounting in tight engine bays without compromising fuel line routing or adding significant weight.

This Holley damper is ideal for EFI conversions, custom fuel system builds, and high-horsepower applications where stock fuel delivery cannot tolerate pressure harmonics. Installation is straightforward: position the damper between the fuel pump and fuel rail using standard -6 AN hoses or hard lines, with the 40–100 PSI range accommodating both carbureted and EFI setups. Whether upgrading a vintage hot rod, tuning a turbocharged engine, or validating a complete fuel system overhaul, this billet damper delivers the stability precision tuning demands.