Fuel Pump Interchange – Quality Engineered Components

Additional pump information will be added as time permits.

The search for suitable fuel pump replacements has been an issue for a number of years as we move farther away from the ‘good-ol-days’ of easy parts supply.

The DeSoto may be the simplest of replacements to deal with; any LA pump is a virtual one-for-one interchange in terms of the pump arm and actuation. The physical appearance will vary greatly from the OEM and will not gain favour if you are dealing with a restoration. Additionally, the location/orientation of inlet/outlet, as well as the size of the inlet/outlet may also be a consideration. We have compared the early front cover to the later 341 style cover and the pumps mount in identical locations.
We have used a 291 front for the following photos.

Verified early style pump from 341 core engine. Note shape and position of actuating arm.

Verified early style pump from 341 core engine. Note shape and position of actuating arm. The eccentric wear spot is shown by the white paint dot.

Verified early style pump from 330 core engine. Note shape and position of actuating arm.

Verified early style pump from 330 core engine. Note shape and position of actuating arm. On this pump, the wear mark is indicated at the red paint dot

This fuel pump is from a 1972 340 core engine. All LA pumps will be of similar design and operation.
Note that the arm is in yet a different position but the ‘sweet spot’ where the eccentric rubs is in the same location.

The stamped tin cover is used on Dodge and 55-58 Chrysler engines. The covers are the same except for the location or absence of the timing pointer. This particular cover is from a 1955-331 Hemi.