Description
Coolant heater for Citroën Berlingo and Peugeot Partner (first generation).
Overview
This coolant heater (OE code 6462T7) is an electric auxiliary heater designed for early Citroën and Peugeot small vans. It accelerates engine warm-up and cabin heating, reduces cold-start wear and emissions, and improves comfort in low temperatures. This offer concerns a used replacement part suitable for workshops and DIY mechanics who need a direct-fit unit for affected models.
Function And Benefits
The unit is installed in the engine cooling circuit and warms the coolant before or during engine start. Main benefits include faster cabin heating, reduced engine friction during cold starts, improved combustion stability on diesel engines, and potential reduction of cold-start emissions. Restoring a faulty heater returns normal heating performance and can eliminate related fault codes in the engine management system.
Technical information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën Berlingo (First Generation), Peugeot Partner (First Generation), Some Citroën Xsara Picasso Variants
- Product Codes: 6462T7
- Additional Numbers: 6462.t7, NFP
Typical Failure Modes
- Electrical Failure: Heating element or internal connections fail after long service life.
- Corrosion And Contamination: Corroded terminals, clogged passages or mineral deposits impair heat transfer or cause leaks.
- Seal Or Housing Damage: Cracked housing or degraded seals lead to coolant leaks and loss of function.
- Connector And Wiring Issues: Corroded plugs or damaged wiring harnesses interrupt power supply.
How The Part Is Replaced
Replacement procedure typically involves depressurising the cooling system, draining a controlled amount of coolant, unplugging the electrical connector, removing hose clamps or pipe connections, extracting the old heater from its mounting, replacing O-rings/gaskets, installing the new unit and refilling and bleeding the cooling circuit. Accessibility varies by engine layout; labor time usually ranges from approximately 0.5 to 2 hours depending on vehicle and workshop equipment.
Installation Recommendations
- Always Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Vehicle Electronics.
- Relieve Cooling System Pressure And Recover/Drain Coolant According To Local Regulations.
- Replace Seals And O-Rings During Installation To Ensure Leak-Free Operation.
- Carefully Inspect Electrical Connector And Wiring; Clean Or Repair Corrosion Before Reconnection.
- After Installation, Refill And Bleed The Cooling System Thoroughly To Remove Air Pockets; Run Engine To Operating Temperature And Check For Leaks.
- Clear Related Fault Codes And Verify Heater Operation With Suitable Diagnostic Equipment If Necessary.
Why The Part Most Commonly Fails
Failure is most often caused by long-term exposure to coolant contaminants and corrosion, electrical wear of the heating element, degraded seals leading to leaks, or poor electrical connections. Vehicles used in cold climates or with neglected cooling maintenance are more prone to premature failure.
Fitment And Compatibility
Fits first-generation Citroën Berlingo and Peugeot Partner applications using OE code 6462T7. Also appears in fitment lists for some Citroën Xsara Picasso variants. Use the product code 6462T7 when searching catalogues or cross-referencing parts to confirm fitment for a specific engine and production year.
Final Notes
For workshop technicians: this is a direct replacement part intended to restore original heating performance. Proper installation and cooling-system bleeding are essential for reliable operation. If diagnostics show related fault codes, address wiring, fuses and connectors in addition to the heater itself to prevent recurring issues.
