If your car was built from the factory with the Pontiac or Oldsmobile engine (mechanical fuel pump is on the driver's side of engine) , they ran the factory fuel line up the driver's side of the chassis. Thus, using a different fuel sending unit from the factory. Modification of the fuel lines will be necessary when connecting the 12-304 to the Pontiac/Oldsmobile engine chassis plumbing.
Holley is excited to introduce their OEM-style EFI fuel tank modules that are designed as a direct replacement for your factory pick-up and sending unit. There's no need for modificationsand you won't have to replace your fuel tank! You can even retain the factory fuel hard line; just connect the outlet of the pump module to the hard line on your vehicle with some EFI-rated fuel hose and hose clamps. Order the model designed for your vehicle application.
Additional features of Holley OEM-style EFI fuel tank modules:
* In-tank fuel pump is a high-pressure unit capable of supporting EFI engines producing up to 550 hp
* Module includes a pre-calibrated fuel-level sending unit that is designed to work with the factory fuel gauge already in vehicle
* Holley includes a HydraMat with its unique internal reservoir to keep fuel available at the pick-up, while also providing protection from contaminates
* Fuel pressure is regulated internally and preset at 58 psi, eliminating the added expense of purchasing an external fuel pressure regulator
* No return line needed (all return fuel is handled inside the tank)
