Description
Air Conditioning Compressor SANDEN 1321F for CITROËN and PEUGEOT vehicles. Pulley – 119 mm. Refrigerant: R134a.
Overview
High-quality Sanden SD7C16 (1321F) air conditioning compressor designed for a range of Citroën and Peugeot models. This compressor restores cooling performance in HVAC systems that use R134a refrigerant and features a 119 mm pulley. Ideal for professional workshops and experienced DIY mechanics who search by part number or OE reference.
Applications
- Citroën C4 II
- Citroën C4 Picasso
- Citroën 5008 I
- Peugeot 207
- Peugeot 308
- Other Stellantis models using SD7C16 1321F specification (check vehicle-specific fitment by part numbers listed below)
Technical Information
- Manufacturer: Sanden
- Model: SD7C16 / 1321F
- Product Codes: 9671216780, 9825868180, 1321F
- Other Numbers: 648734, 6453QL, 6453QN, 6453WN, 6453ZA, 6453WP, 6453ZC
- Pulley Diameter: 119 mm
- Refrigerant: R134a
Function And What To Expect
The compressor pressurizes and circulates refrigerant through the A/C system, enabling heat exchange and cabin cooling. It contains a shaft bearing, clutch assembly, and internal valves that ensure correct flow and pressure. Proper lubrication with the manufacturer-specified PAG oil is essential for long service life.
Why The Part Fails Most Often
- Contamination from a failed expansion valve or ruptured hose, causing internal damage.
- Lack Of Lubrication Or Oil Loss—leads to bearing/seal failure and seizure.
- Clutch Wear Or Electrical Faults—clutch does not engage or slips under load.
- Corrosion Or Refrigerant Leaks—O-ring deterioration or hose/connection leaks.
- System Overpressure Or Debris From Previous Failure—can destroy internal components.
Replacement Procedure (General Guidance)
Only experienced technicians or knowledgeable DIYers should perform A/C compressor replacement. Basic steps:
- Recover refrigerant using certified recovery equipment (legally required).
- Disconnect battery if needed to avoid electrical shorts when removing connectors.
- Remove drive belt and any obstructing components for access to compressor.
- Disconnect refrigerant lines (cap immediately to avoid contamination) and electrical connectors.
- Unbolt compressor from bracket and remove unit. Inspect mounting points and pulleys for damage.
- Replace receiver-drier/accumulator and all relevant O-rings (lubricated with correct oil).
- Install new compressor with the correct quantity and type of PAG oil specified by manufacturer.
- Vacuum the system to remove moisture, perform leak check, then charge with correct amount of R134a refrigerant.
- Check belt tension and pulley alignment; verify compressor clutch engagement and system pressures under operation.
Recommendations For Installation
- Always Recover And Recycle Refrigerant Using Proper Equipment.
- Replace Receiver-Drier/Accumulator And All Seals When Replacing Compressor.
- Use Manufacturer-Specified PAG Oil Volume And Type; do not mix oil types.
- Perform Vacuum And Leak Test Before Charging The System.
- Inspect Condenser, Hoses And Expansion Valve For Contamination; flush if contamination suspected.
- Verify Pulley Diameter (119 mm) And Clutch Compatibility With Vehicle Drive System.
Notes For Mechanics And DIYers
Customers often search using OE numbers—include these references when ordering to ensure fitment. This Sanden SD7C16 1321F compressor is suitable for many Citroën and Peugeot models listed above, but always verify part numbers against the vehicle build data or parts catalogue. Proper workshop equipment (manifold gauges, vacuum pump, refrigerant recovery station) is required for safe and correct installation.
