Holley 12-364 98-02 GM F Body Twin 340Lph Pump Mod

If you are looking to make some serious power with your 1998-2002 4th Gen F-body, the Holley modules feature billet pump flanges that connect to either single or dual 340 or 450 LPH pumps. All four of these options are compatible with gasoline and E85 and come pre-installed with new level and tank pressure sensors as well as provisions to connect to the factory EVAP system for EPA compliance.

Each module also comes with all the parts and pieces necessary to complete the installation. Included is a 3 x 11-inch Hydramat filter that leverages surface tension to draw from nearly any area that has contact with fuel eliminating starvation under hard acceleration or cornering. Also included is a new fuel pump gasket, wiring pigtails for the level sender and fuel pump, and fittings to connect to the factory quick connect feed and return lines. The modules are all return style, so don't forget to pick up an EFI pressure regulator (such as the 19-392 or 19-395) to complete your installation.

Part numbers in this series:

Part #: 12-362 - Single 340LPH Pump Module

Part #: 12-363 - Single 450LPH Pump Module

Part #: 12-364 - Twin 340LPH Pump Module

Part #: 12-365 - Twin 450LPH Pump Module

Anodized and laser-etched billet 6061-T6 flange with 6AN ORB ports for feed, return, and vent

All SKUs compatible with Gasoline AND E85

Comes pre-installed with new pre-calibrated fuel level (33 – 240 ?) and tank pressure sensors

Includes new gasket to complete installation

A 3 x 11-inch HydraMat is included for each pump

Fits factory plastic tank used in LS1 98-02 Camaro / Firebird or an earlier 4th Gen F-body with fuel tank upgrade

Fittings included allowing connection to the factory 3/8 quick connect feed and return lines

Flanges have been designed to be compatible with feed and return line sizes up to -8AN

Step-down butt connectors included to wire level sensor

Can be connected to factory EVAP system (w/ use of 12-874 and 935056ERL - sold separately)

Kit includes vehicle pigtail harness - All connectors used are DTM style

Drive the vehicle until the level in the tank is at or below 1/8 of a tank. To make tank removal and reinstall as easy as possible, the lower the fuel level the better.