Holley In-Line Fuel Pulse Damper GRL15 Alternator & water pump is

Alternator & water pump is 6% OD

Dedicated output with wiper braking feature

Snaps Securely Attach the Boot to the Base while Allowing Easy Removal

Much lighterSmallest shell

Improved cornering

Holley In-Line Fuel Pulse Damper GRL15 Alternator & water pump isFuel pulse dampers act in tandem with the fuel pressure regulator to further control the fuel pressure in an EFI system. They act to smooth out the pressure pulsations caused by the injectors opening and closing as well as the fuel pump operating. These pulsations happen so quickly that in many cases they can't be identified with an analog gauge but can cause issues with fuel delivery to the engine. Features: Engineered to stabilize pressure