Description

This replacement set of heater control rods (control cables/linkage) is engineered for the Citroën C1 and Peugeot 107 with manual climate controls. Ideal for professional workshops and DIY mechanics, the kit restores precise temperature, airflow and mode control when the original linkage has worn, stretched or broken. Commonly searched by part numbers 6451SG, 6451SJ and 6451SH, this set fits the interior control assembly and interfaces directly with the HVAC unit and dashboard control levers.

Features

• Direct-fit replacement for manual heater and air conditioning controls.
• Includes control rods/cables matched to original routing and mounting points.
• Durable materials to resist wear and reduce play in control movement.
• Compatible with OEM part references 6451SG, 6451SJ, 6451SH for easier lookup.

Compatibility

Designed for:

• Citroën C1 (models up to 2014)
• Peugeot 107 (models up to 2014)

How It Works — Function

The heater control rods transfer mechanical movement from the dashboard control levers to the HVAC unit’s flaps, blend doors and mode selectors. When you move a temperature or distribution slider/knob, the rods translate that input into precise flap positioning, controlling cabin temperature, air distribution and recirculation in vehicles with manual climate control.

Signs Of Failure

• Control levers feel loose or have excessive play.
• Selected temperature or airflow setting does not change the vents correctly.
• Clicking noises or intermittent operation when moving controls.
• Visible broken plastic clips, corroded ends or frayed cables behind the dashboard.

Replacement Procedure

Typical replacement steps for a competent mechanic or experienced DIYer:

1. Remove the necessary dashboard trim and control bezel to access the control levers and cable ends.
2. Note the routing and positions of each rod/cable; photograph connections if needed to ensure correct reassembly.
3. Unclip or unscrew the retaining clips/fasteners and detach the old rods from the control levers and HVAC unit.
4. Fit the new rods in the same routing, secure clips and check for smooth, unobstructed movement through the full range.
5. Reassemble the dashboard trim and test all controls for correct operation and full travel.

Recommended Installation

• Work With Ignition Off. Avoid operating interior electrical systems while disassembled.
• Document Original Positions. Photograph or mark original cable routing and lever positions before removal to prevent misassembly.
• Use Proper Tools. Small trim tools, pliers and screwdrivers reduce risk of damaging clips or trim panels.
• Check For Obstructions. Ensure new rods move freely and do not rub against sharp edges or insulation.
• Final Test. Verify all HVAC settings (temperature, mode, fan) operate smoothly across full range before completing reassembly.

Why This Part Commonly Fails

Control rods and cables are subject to mechanical wear, plastic clip fatigue and corrosion over time. Frequent use, harsh temperature cycles inside the dashboard and contamination from dust or moisture accelerate deterioration. Breakage typically occurs at plastic end fittings or where the cable flexes repeatedly, causing loss of precise control and increased play in the levers.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C1; Peugeot 107
• Product Codes: 6451SG, 6451SJ, 6451SH
• Additional Numbers: 6451SG | 6451SH | 6451SJ

Notes For Professionals

This part is aimed at garages and competent DIYers who are comfortable removing interior trim and working around HVAC components. Replacing the control rods typically restores original functionality without the need for HVAC unit replacement.

Upgrade or repair your vehicle’s climate control with this genuine-style manual HVAC controller designed for Citroën C1 and Peugeot 107 models produced up to 2014. Ideal for professional mechanics and DIY enthusiasts, this unit replaces the factory heater and manual air conditioning controller and is often searched by product codes 55900-0H040 and 55900-040. The control comes with mechanical link rods (control cables) that operate flaps and temperature/airflow selectors — a direct-fit replacement for worn or broken dashboard controllers.

Function And Benefits

The unit manages temperature selection, airflow distribution and fan speed for vehicles equipped with manual climate control. Mechanical control rods transmit selector movements to internal flaps and blend doors, providing reliable, tactile operation without requiring complex software configuration. Replacing a faulty control restores full manual control of cabin temperature and ventilation, improving comfort and driving safety.

How To Replace

1. Remove the necessary dashboard trim panels to access the HVAC control panel (refer to vehicle repair manual for exact trim removal points).
2. Disconnect the electrical connector and carefully release the control rods from their levers — note rod routing and clip positions for reassembly.
3. Unfasten the retaining screws and remove the old control unit.
4. Install the replacement unit, secure with screws, reconnect the control rods and electrical connector, and reassemble trim panels.
5. Test all functions (fan speeds, temperature slider, airflow direction) before finishing. Adjust rod end positions if necessary to ensure accurate flap movement.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C1, Peugeot 107 (up to 2014)
• Product Codes: 55900-0H040, 55900-040
• Additional Numbers: 6452P6, 6451SG, 6451SJ, 6451SH

Installation Recommendations

• Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Electrical Components.
• Keep Track Of Control Rod Routing And Clips; Incorrect Reconnection Can Lead To Misadjusted Flap Positions.
• Handle Plastic Tabs And Rod Ends Carefully — They Are Common Break Points During Removal.
• After Installation, Verify Full Range Of Motion For All Controls And Check That Airflow And Temperature Respond Correctly.

Common Failure Causes

Manual climate controllers on these models commonly fail due to broken plastic levers, worn or detached control rods, and internal potentiometer or switch wear from long-term use. Exposure to heat and repeated mechanical stress can cause clips and sliders to crack or lose precision, resulting in stuck flaps, non-responsive temperature control or intermittent fan speed operation.

Choose this replacement if your climate controls are stiff, unresponsive, making noise, or if mechanical linkages are broken. Properly fitted, the unit restores reliable manual control of your vehicle’s heating and ventilation system.

Overview

This complete heater and manual climate control unit with linkages is a direct-fit replacement for Citroën C1 and Peugeot 107 models produced until 2014. Designed for workshop technicians and competent DIYers, the unit controls temperature, airflow distribution and fan speed and provides direct mechanical actuation of blend and flap positions via supplied cables. Many customers search by part number—include the reference codes in your lookup to find the correct item quickly.

Features And Function

• Manual temperature control and fan-speed adjustment for reliable cabin comfort.
• Mechanical linkages (cables) for flap and blend control—robust replacement for worn or broken originals.
• Integrated switches for recirculation and A/C compressor engagement where applicable.
• Simple, serviceable design that allows targeted replacement without replacing the whole HVAC assembly.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C1, Peugeot 107
• Product Codes: 55900-0H040, 55900-0H020, 55900-020, 55900-040, 559000H020, 559000H040
• Additional Numbers: 6452P6, 6451SG, 6451SJ, 6451SH

Compatibility And Notes

Fits Citroën C1 and Peugeot 107 versions up to model year 2014 that use manual climate controls with cable-actuated flaps. Confirm fitment by matching the product codes listed above with the original part number. This assembly replaces both the control unit and the associated linkages, making it ideal when cables are snapped or internal controls are worn.

Installation Recommendation

• Always disconnect the battery before starting work to avoid electrical short circuits and protect vehicle electronics.
• Remove the center fascia trim carefully to avoid breaking plastic clips. Use appropriate trim tools and keep screws and clips organized.
• Label or photograph cable routing and connector positions before removal to ensure correct reassembly.
• Disconnect electrical connectors and unclip cable ends from the control levers. Replace linkages into their correct mounting points—do not force them; they should seat smoothly.
• After installation, verify all functions (temperature range, fan speeds, flap positions, recirculation and A/C switching if present) before refitting the trim.
• If in doubt about trim removal or electrical connections, have the work performed by a professional workshop.

How The Part Commonly Fails

Failures are usually mechanical or electrical in nature: plastic cables and levers become brittle with age and can snap; internal potentiometers or sliders wear out causing intermittent or stuck temperature and fan controls; dust and dirt build-up can impede smooth movement; and sun exposure accelerates degradation of plastic components. These issues typically appear on higher-mileage or older vehicles and often present as stuck flaps, missing fan speeds or inability to change temperature smoothly.

Why Buy This Replacement

Replacing the complete control assembly with linkages restores reliable manual control of HVAC functions without the need to overhaul the heater box. The unit is aimed at mechanics and equipped DIYers who want a direct-fit, serviceable solution that addresses both electrical and mechanical wear in a single replacement.

Useful Tips

• Check connector pins for corrosion and clean contacts if necessary before installation.
• Test the unit on-bench (where possible) for basic functionality before final installation.
• Keep original breakable clips and routing clips as reference or replace them during reassembly to ensure secure cable routing.
• Search online and in catalogs using one of the product codes for faster cross-referencing.

Product Overview

This is a direct-fit manual heater control unit designed for Citroën C1 and Peugeot 107 models produced up to 2014. The panel allows control of fan speed, temperature mixing and airflow direction for vehicles equipped with manual climate control. It is a commonly replaced component in older small city cars where knobs, potentiometers or mechanical linkages wear out over time.

Function

The unit controls the following functions on vehicles with manual HVAC systems: fan speed selection, temperature adjustment (blend), airflow distribution (face/feet/windshield) and, depending on variant, air recirculation. On many models the control panel transmits movement via cables (linkages) to internal heater/airbox flaps; some versions include the cable set as part of the assembly.

Replacement Procedure

• Disconnect the negative battery terminal before starting to avoid short circuits and protect vehicle electronics.
• Carefully remove surrounding trim panels in the center console to access the heater control unit. Use trim tools to avoid damaging plastic clips.
• Unscrew mounting fasteners and gently pull the unit forward to access electrical connectors and any cable linkages.
• Release electrical connectors and detach control cables if present (note their routing and orientation for reassembly).
• Install the new unit by reversing the removal steps: connect electrical plugs, reattach cables and secure the unit with original fasteners. Refit trim panels and reconnect the battery.

Installation Recommendations

• Always disconnect the battery before removal and follow the vehicle manufacturer’s assembly/disassembly sequence to avoid damage to connectors and control modules.
• If the unit is supplied with control linkages, ensure cables are routed and clipped in the same positions as the originals to prevent binding of the heater/ventilation flaps.
• Check related components during replacement: cable ends, cable guides, dash clips and the condition of the ventilation flaps/blend door actuators. A faulty actuator or blocked duct can mimic a control panel fault.
• Use basic hand tools and plastic trim tools; avoid prying directly on the faceplate to prevent cosmetic damage.

Why The Part Fails

Common failure modes include worn rotary potentiometers or switches, broken plastic knobs or mounting tabs, and frayed or detached control cables. Frequent use, exposure to heat cycles and mechanical stress on small plastic parts accelerate wear. Dust and debris from the HVAC ducts can also affect switch feel and electrical contacts over time.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C1, Peugeot 107 (up to 2014)
• Product Codes: 55900-0H040, 55900-0H020
• Additional Numbers: 6452P6, 6451SK

Compatibility Notes

This heater control is intended for vehicles listed above; compatibility is typically confirmed by the product codes stamped on the original part. When ordering, match the product code printed on your existing unit to ensure correct fitment and function. Units are commonly sought under the referenced product numbers.

Who Should Install

The replacement is suitable for experienced DIYers with basic dashboard trim experience and for professional technicians. If you are unsure about handling dashboard components or cable routing, consider professional installation to avoid damage to interior trim or HVAC components.

Direct-fit replacement heating control button (part code 6451SK) designed for the early Citroën C1 and Peugeot 107 models. Ideal for professional workshops and DIY mechanics who need a reliable spare part to restore heating and climate control functionality. The switch is commonly searched by the product code 6451SK, making it easy to find and order for vehicles of the first production series.

Features

• Direct fit for first-series Citroën C1 and Peugeot 107.
• Replacement for the original heating control switch used in early model center consoles.
• Straightforward installation — plug-in electrical connector and retaining clips/screws.
• Useful for restoring proper control response, indicator illumination and mechanical operation of the heating control panel.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C1 (first series); Peugeot 107 (first series)
• Product Codes: 6451SK
• Other Numbers: No additional cross-reference numbers provided

Fitment And Typical Symptoms

This button is intended for the first-generation Citroën C1 and Peugeot 107. Common symptoms indicating a faulty heating control button include unresponsive or intermittent operation, a button that sticks or does not engage, failure of internal illumination, or erratic behaviour of the heating/ventilation control related to that specific switch.

Replacement And Installation

1. Disconnect the vehicle battery before starting removal to avoid short circuits and prevent damage.
2. Remove the centre console trim using appropriate plastic trim tools to avoid breaking clips or scratching panels.
3. Unscrew or release the retaining clips holding the control module; carefully pull the module forward to access the connector.
4. Unplug the multi-pin electrical connector from the back of the button assembly and remove the old switch.
5. Install the new heating control button, reconnect the electrical connector and test the function and illumination before reassembling the trim.
6. Reassemble trim and reconnect the battery. Verify full functionality with the vehicle running if required.

Why The Part Commonly Fails

• Mechanical Wear: Repeated use over many years can wear the internal actuator and latching mechanism.
• Electrical Contact Degradation: Oxidation or pitting on contact surfaces can cause intermittent or failed operation.
• Environmental Damage: Moisture ingress, spilled liquids or corrosion can impair switch function and illumination.
• Plastic Fatigue: Age-related brittleness may cause housing clips or button elements to crack or break during use or removal.

Installation Recommendations

• Always disconnect the battery before removal and follow the vehicle manufacturer’s disassembly sequence to prevent damage to surrounding components.
• Use non-marring plastic trim tools to remove panels; avoid excessive force on clips and connectors.
• Inspect the wiring harness and connector for corrosion or damage; clean contacts if necessary before installing the new switch.
• After fitting, verify all functions (switch response, illumination and related HVAC behaviour) before completing reassembly.

If you are replacing a worn or failed button from a first-series Citroën C1 or Peugeot 107, reference the product code 6451SK when ordering to ensure correct fitment.

Original heating & air conditioning control panel designed for the first generation Citroën C1 and Peugeot 107 with manual climate control. This OEM panel provides mechanical controls for temperature, airflow direction and A/C activation. Commonly sought under part numbers 55900-0H0040, 55900-0H0020, 6452P6 and 6451SF for direct replacement when the factory unit becomes stiff or damaged.

Key Features

• OEM original unit compatible with Citroën C1 I and Peugeot 107 I (first generation)
• Mechanical control panel using cable (bowden) actuation for temperature, vent selection and A/C
• Smooth rotary/sliding controls and working detents; electrical connector present for A/C switch illumination
• Delivered as a used original part in excellent condition with intact cable stops; control cables are not supplied

Condition And What Is Supplied

This listing is for a used OEM heating & air conditioning control panel in excellent condition. Plastic cable stops (end-stops) are intact and the control knobs operate smoothly with reliable detents. The electrical connector for the A/C pushbutton and illumination is intact and ready to plug in. Please note: the control cables (bowdens) themselves are NOT included in the delivery.

Function And Common Failures

The panel mechanically operates temperature blend doors, vent selection flaps and the A/C on/off command via Bowden cables. Common faults on these models include broken plastic stops, weakened or seized control cables and worn detents, which lead to stiff operation, inability to change vent direction or loss of temperature control. Replacing the complete panel is a reliable way to restore precise, smooth control when individual cables or mounts are failing.

Installation Tips

Access is through the center dashboard trim. Remove the radio/vent frame, undo the fasteners holding the control panel, disconnect the electrical connector and release the cable clips. When refitting, set the levers and doors to their extreme positions (e.g. full cold and front vent) before attaching the cables so the travel and stops align correctly. Ensure all cable clips are seated and cables are not kinked. Check operation of each control and the A/C switch before refitting trim panels.

Compatibility

Intended for first-generation Citroën C1 I (2005–2014) and Peugeot 107 I (2005–2014) equipped with manual climate control. Always verify fitment by comparing OEM part numbers or checking your vehicle VIN if unsure.

Technical Information

Manufacturer: PSA / Toyota (OEM)
Model: Citroën C1 I (2005–2014), Peugeot 107 I (2005–2014), Manual Climate Control
Product Codes: 6452.P6, 6451.SF
Other Numbers: 55900-0H0040, 55900-0H0020

Search Keywords

Heating control C1, air conditioning control 107, heating/AC control panel, mechanical control with cables, 55900-0H0040, 55900-0H0020, 6452P6, 6451SF.

Description

High-quality heating control unit compatible with first-series Citroën C1 and Peugeot 107. Supplied complete with its control cables (wire linkages) and delivered in ready-to-fit condition. Ideal for professional garages and competent DIY mechanics searching by OEM numbers such as 55900-0H0010, 55900-0H010, 55900-0H011, 6452P5 or 6451SE.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C1, Peugeot 107 (First Series)
• Product Codes: 55900-0H0010, 55900-0H010, 55900-0H011, 6452P5, 6451SE
• Other Numbers: Common Internal/Service References As Shown Above

Function

This unit controls the vehicle heating and ventilation functions: temperature selection, airflow distribution and the movement of heater/ventilation flaps via mechanical cable linkages. The panel provides the interface for the driver to adjust cabin climate, transmitting inputs to the actuator cables and associated blend doors.

Common Failure Causes

Failures are usually mechanical rather than electrical. Typical causes include cable wear or fraying, brittle or broken plastic stops and mounting tabs, seized or stiff cable sleeves, and long-term material degradation from heat and UV exposure. Symptoms include difficulty selecting airflow modes, stuck or unresponsive controls, inconsistent temperature regulation or audible binding when moving the knobs.

Replacement Procedure

• Disconnect Battery Before Work To Avoid Short Circuits.
• Remove Dashboard Trim/Center Console Panels To Access The Heater Control Unit.
• Note Cable Routing And End-Stop Orientation Before Disconnecting Cables.
• Unscrew And Remove The Old Control Unit, Then Unclip Or Detach The Cable Ends From The Levers.
• Fit The New Unit, Reattach Cables Ensuring End-Stops Are Fully Seated, And Check Full Range Of Motion.
• Reassemble Trim Panels And Reconnect The Battery. Verify Operation With Engine Running And Heater Controls In All Positions.

Installation Recommendations

Handle Plastic Tabs Carefully To Avoid Breakage. Replace Any Frayed Or Damaged Cables When Installing The New Unit. Apply A Suitable Lubricant To Cable Sleeves If They Appear Dry Or Stiff. Test All Functions Before Final Reassembly. Use The OEM Part Numbers Listed Above To Ensure Correct Fitment.

Why The Part Typically Fails

The most common reason for failure is mechanical wear of the cable system and plastic components after many years of use. Repeated operation, exposure to heat and sunlight, and dirt ingress accelerate wear on cable end-stops and mounting points, eventually causing loss of smooth operation or complete detachment of control linkages.

Who Should Fit This Part

Suitable For Professional Mechanics And Experienced DIY Enthusiasts. If You Do Not Have Experience With Interior Trim Removal Or Cable Reassembly, Seek Assistance From An Automotive Technician.

Keywords

Heater Control, Heating Control, Climate Control Panel, Citroën C1 Heater Control, Peugeot 107 Heater Control, 55900-0H0010, 55900-0H010, 55900-0H011, 6452P5, 6451SE