1623904 Fuel Priming Pump

The 1623904 fuel priming pump is a hand-operated fuel system component for Caterpillar equipment. It is used to remove air from the fuel system before engine start-up and to prime the fuel circuit after fuel system service or interruption of fuel supply.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The component is listed in the Fuel Lift Pumps category and is identified by SKU 1623904.

The available product data confirms compatibility with Caterpillar equipment, but does not specify individual machine models, engine models, or machine series. Model-level fitment should therefore be checked against the pump installed on the machine and the applicable parts documentation.

Cross-reference numbers

• 1623904
• 162-3904

Specifications

The pump is installed as part of the fuel supply system. Its stated purpose is to purge air from the fuel circuit before the engine is started, which is relevant after fuel system maintenance, replacement of fuel system components, or loss of fuel supply. The product information does not provide details about mounting arrangement, connection type, thread size, sealing elements, included fittings, or installation hardware.

When identifying the required part, compare the number stamped or listed for the removed component with 1623904 and 162-3904. Since individual Caterpillar machine and engine applications are not included in the available data, the exact equipment model must be verified separately before installation.