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Dorman 904-643 Diesel Exhaust Fluid (DEF) Heater
| Brand | Dorman 904-643 |
|---|---|
| Inside Diameter | 4.3 |
| Electrical Connector Quantity | 1 |
| Electrical Connector Quantity | 1 ensamble de manguera del calentador |
| Mounting Hardware Included | Oui |
| Mounting Hardware Included | Sí |
| Mounting Hardware Included | Yes |
| Universal Or Specific Fit | Específico |
| Universal Or Specific Fit | Specific |
| Housing Material | Plastic |
| Housing Material | Plástico |
| Housing Color | Black |
| Housing Color | Negro |
| Housing Color | Noir |
| Electrical Connector Terminal Quantity | 7 |
| Contenidos del paquete | 1 ensamble de calentador |
| Contenidos del paquete | 1 tapa |
| Contenidos del paquete | Herraje de montaje |
| Electrical Connector Gender | Female |
| Electrical Connector Gender | Hembra |
| Electrical Connector Terminal Gender | Macho |
| Electrical Connector Terminal Gender | Male |
| Height | 10 in |
| Height | 10 in. |
| Hose Included | No |
| Hose Included | Non |
| Inlet Fitting Type | O-ring |
| Inlet Fitting Type | Sello tipo o |
| Level Sensor Type | Electronic |
| Material aislante del cable | Pvc |
| Outlet Fitting Type | O-ring |
| Fits | Ford · 20 vehicles |
OE FIX solution. Modifies the original design to address a common failure point and improve reliability.
Specific fit. Built for a direct, vehicle-specific replacement.
Plastic housing. Black housing with O-ring fittings and an electronic level sensor.
Cross-references Spectra Premium EM1509URH, CK4Z5L227B and CK4Z5L227D for the same application. See all 8.
DEF Heater for Transit Vans
Dorman 904-643 is a diesel exhaust fluid heater assembly for select Ford Transit vans. It addresses a common factory failure point caused by fluid intrusion by revising the OE design for improved reliability in daily commercial use.
- OE FIX design for improved resistance to fluid intrusion
- Specific fit for select Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD models
- Plastic housing with black finish
- Electronic level sensor type
- Female electrical connector with 7 terminals
- O-ring inlet and outlet fittings for a secure seal
- Mounting hardware included
- Wire insulation material: PVC
Product Details
This Dorman DEF heater assembly is built for diesel exhaust fluid system service on 2015-2019 Ford Transit-150, 2015-2019 Ford Transit-250, 2015-2019 Ford Transit-350, and 2015-2019 Ford Transit-350 HD models. The part number 904-643 is engineered as a direct-fit replacement with a specific application, using an updated design to help address the heater failure mode commonly seen on the original factory unit. It cross-references Spectra Premium EM1509URH for the same application.
Common Issues Addressed
- DEF heater failure from fluid intrusion
- DEF system warning lights related to heater malfunction
- Cold-weather DEF flow problems in the tank assembly
- Level-sensor related service concerns in the DEF module
- Replacement needs for a damaged or leaking heater housing
Installation Notes
Verify connector style, O-ring sealing surfaces, and mounting points before installation. This part uses a female 7-terminal electrical connector and specific-fit mounting locations for the listed Ford Transit applications. Follow OEM service procedures for DEF system handling, sealing, and electrical connection checks. Confirm vehicle application by model year before ordering 904-643.
Quality Assurance
Dorman OE FIX components are designed to improve on known OE failure points while maintaining direct-fit serviceability. For buyers searching for a Ford Transit DEF heater, diesel exhaust fluid heater assembly, or Dorman 904-643 replacement, this part provides a targeted repair solution for the listed Transit van applications.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2019 | Ford | Transit-150 | 3.2L | L5 | DIESEL | N/A | — |
| 2019 | Ford | Transit-250 | 3.2L | L5 | DIESEL | N/A | — |
| 2019 | Ford | Transit-350 | 3.2L | L5 | DIESEL | N/A | — |
| 2019 | Ford | Transit-350 HD | 3.2L | L5 | DIESEL | N/A | — |
| 2018 | Ford | Transit-150 | 3.2L | L5 | DIESEL | N/A | — |
| 2018 | Ford | Transit-250 | 3.2L | L5 | DIESEL | N/A | — |
| 2018 | Ford | Transit-350 | 3.2L | L5 | DIESEL | N/A | — |
| 2018 | Ford | Transit-350 HD | 3.2L | L5 | DIESEL | N/A | — |
| 2017 | Ford | Transit-150 | 3.2L | L5 | DIESEL | N/A | — |
| 2017 | Ford | Transit-250 | 3.2L | L5 | DIESEL | N/A | — |
| 2017 | Ford | Transit-350 | 3.2L | L5 | DIESEL | N/A | — |
| 2017 | Ford | Transit-350 HD | 3.2L | L5 | DIESEL | N/A | — |
| 2016 | Ford | Transit-150 | 3.2L | L5 | DIESEL | N/A | — |
| 2016 | Ford | Transit-250 | 3.2L | L5 | DIESEL | N/A | — |
| 2016 | Ford | Transit-350 | 3.2L | L5 | DIESEL | N/A | — |
| 2016 | Ford | Transit-350 HD | 3.2L | L5 | DIESEL | N/A | — |
| 2015 | Ford | Transit-150 | 3.2L | L5 | DIESEL | N/A | — |
| 2015 | Ford | Transit-250 | 3.2L | L5 | DIESEL | N/A | — |
| 2015 | Ford | Transit-350 | 3.2L | L5 | DIESEL | N/A | — |
| 2015 | Ford | Transit-350 HD | 3.2L | L5 | DIESEL | N/A | — |
| No rows match your filter. | |||||||