> Canonical page: https://dieselfuelinjectionrepair.com/parts/fuel-conditioning-modules/

> Summary: Horizontal and vertical fuel conditioning module names appear on certain diesel fuel systems. Request part-number verification and sourcing guidance from DCT.

DIESEL PARTS / ELECTRONIC MODULES AND FUEL CONDITIONING

# Fuel Conditioning Modules (HFCM / VFCM)

Find HFCM or VFCM fuel-conditioning components by the correct system and housing number. The right assembly depends on the engine application.

For electronic controls, the original module number and engine application matter. Tell us what you have and we can discuss identification and sourcing.

## Understanding the electrical system

Fuel-conditioning assemblies may incorporate filtration, water separation or related components. Match the original HFCM or VFCM arrangement.

## Identify the correct Fuel Conditioning Modules

Share the complete module or assembly number, mounting configuration and engine or vehicle identification.

Provide clear photos of the module case, label and connectors. Share engine and vehicle details, known trouble codes and whether power supply and harness faults have been checked.

## Replacement and programming questions

Confirm filters, water-separation parts, electrical elements and complete-assembly needs separately.

Compare the original hardware number, programming requirements and engine application with the product details. If you're unsure, send DCT the module label and we'll help you review available options.

## Fuel Conditioning Modules: numbers and identification

These parts may be listed as HFCM VFCM assemblies, diesel fuel conditioning module. Confirm the original module number and programming requirements for your engine.

## Ask DCT about Fuel Conditioning Modules

Include the exact part and controller number, engine application, fault history and verified electrical or connector findings. DCT can confirm current sourcing options for the correctly identified part; only published store listings establish checkout availability.

[Ask Our Parts Team](/parts/find-a-part/)



[Visit the Diesel Parts Store](/store/)

## Related Fuel Conditioning Modules resources

- [Browse related electronic modules and fuel conditioning](/parts/electronics-modules/)
- [Get Help with a Part Number](/parts/find-a-part/)
- [Shop Diesel Parts](/store/)
- [Learn About This Fuel System](/parts/filtration/)