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

Alternator & water pump is 6% OD

Much lighterSmallest shell

Stage 3+ 402

Includes bolts and spacers for skid plate

Reinforced M6 threaded HANS/HNR inserts are integrated into the shell along with an expanded polystyrene (EPS) liner

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