AEM 25-4004 AN-6 ORB 40–100 PSI Fuel Pulse Damper

6AN ORB 40-100 PSI FUEL PULSE DAMPER They work in tandem with your AEM fuel pressure regulator to smooth out the pressure pulsations caused by the injectors opening and closing as well as the fuel pump operation under load.

• Engineered to stabilize pressure pulsations caused by the injectors opening, ideal for applications with large fuel injectors and high volume fuel pumps
• 1/8" NPT port on body of damper/regulators and in-line dampers for easy installation of mechanical pressure gauge or pressure transducer
• Compatible with any fuel -- full anodized billet aluminum construction with stainless steel springs and fluorosilicone diaphragm
• Fittings included for damper/regulator’s and direct mount dampers

The AEM 25-4004 AN-6 ORB Fuel Pulse Damper is designed to work with an AEM fuel pressure regulator to reduce pressure pulsations caused by fuel injector operation and fuel pump load. By smoothing pressure fluctuations in the fuel system, this damper helps support more consistent fuel pressure, particularly in performance applications using large fuel injectors and high-volume fuel pumps.

Built with fully anodized billet aluminum construction, the AEM 25-4004 uses stainless steel springs and a fluorosilicone diaphragm for durability and fuel compatibility. The damper is compatible with any fuel and operates across a 40–100 PSI pressure range. An integrated 1/8-inch NPT port provides a convenient connection point for a mechanical fuel pressure gauge or pressure transducer, simplifying system monitoring and installation.

This AN-6 ORB fuel pulse damper includes the required fittings for damper, regulator, and direct-mount applications. It is intended for automotive performance fuel systems and is not CARB approved. Professional installation is recommended, and users should verify fuel-system compatibility, pressure requirements, and applicable emissions regulations before installation. The package includes one AEM fuel pulse damper and the associated installation fittings.

Features:

• Pressure Stabilization: Helps smooth fuel pressure pulsations created by injector opening and closing cycles and fuel pump operation under load.
• Performance Fuel System Support: Ideal for applications using large fuel injectors and high-volume fuel pumps.
• Integrated Monitoring Port: Includes a 1/8-inch NPT port for connecting a mechanical fuel pressure gauge or pressure transducer.
• Durable, Fuel-Compatible Construction: Uses anodized billet aluminum, stainless steel springs, and a fluorosilicone diaphragm for broad fuel compatibility.

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1