This Sanden SD6V12 compressor is a direct-fit A/C unit commonly used across many Citroën and Peugeot petrol and diesel applications. Designed for reliable cabin cooling, the SD6V12 is known for compact dimensions, proven clutch design and compatibility with original equipment mounting points and refrigerant lines. Ideal for professional workshops and experienced DIY mechanics who need a serviceable replacement part with familiar PSA product codes. The listing includes multiple OE references and aftermarket identifiers frequently used when searching parts databases.

Technical Information

Manufacturer: Sanden
Model: Citroën Berlingo B9; C3 II; C3 Picasso; C4; C5 III; DS3; Peugeot 207; 307; 308; 508; Partner III
Product Codes: 9684480180, 9671456680, 9800821980, 9800822280
Other Numbers: 6453XP, 6453QG, 6453XJ, 648714, 648715, 648722

Function And Fitment

The compressor circulates refrigerant through the air conditioning system, compressing low-pressure vapor into a high-pressure gas so the condenser can reject heat. This SD6V12 unit is a six-vane Sanden design commonly fitted as original equipment on many PSA group models listed above. Ensure compatibility by matching mounting flange, pulley type and electrical connector to the vehicle application and the OE/product codes shown.

Installation Recommendations

• Recover Refrigerant Safely: Evacuate the refrigerant using appropriate recovery equipment before any work.
• Disconnect Battery: Isolate the vehicle electrical system prior to removal.
• Remove Drive Belt And Electrical Connections: Note belt routing and mark electrical connectors for reassembly.
• Disconnect Refrigerant Lines: Cap and label lines to avoid contamination; replace O-rings with the correct size and material.
• Drain And Measure Oil: When replacing the compressor, confirm oil type (PAG compatible with R134a systems) and quantity; top up to OEM specification.
• Flush System If Contaminated: If the original compressor failed catastrophically, flush the circuit to remove debris and replace the receiver/drier or accumulator.
• Vacuum, Leak Test And Recharge: After fitting, perform a vacuum hold test to check for leaks, then recharge to the manufacturer’s specified refrigerant mass.
• Final Checks: Verify clutch engagement, confirm correct belt tension and check for abnormal noises during operation.

Why This Part Fails Most Often

Common causes of compressor failure include bearing wear leading to noisy operation or seizure, clutch wear or electrical faults preventing engagement, shaft seal deterioration causing refrigerant and oil leaks, and contamination from system breakdown or moisture ingress. Failures are frequently triggered by lack of maintenance (e.g., neglected receiver/drier), presence of debris after a previous compressor failure, or prolonged system operation with low refrigerant/oil level.

Signs Of A Faulty Compressor

• Reduced or No Cooling At Vent Outlets
• Unusual Noises From The Compressor (Grinding, Rattling, Squealing)
• Compressor Clutch Not Engaging
• Visible Refrigerant Or Oil Leaks Around Compressor Seals

Typical service life depends on vehicle usage and maintenance history; compressors commonly remain in service for many years but may fail sooner if the system has not been maintained correctly. When replacing the compressor, fit new O-rings, renew the receiver/drier and ensure the system is clean and correctly charged to maximise longevity and restore full cooling performance.

Key Features

• Original Sanden SD6V12 design providing stable cooling performance
• Compatible with common PSA mounting and drive configurations
• Pulley diameter approximately 119 mm with a 6-rib pulley
• 4 mounting holes for direct replacement
• Supplied as a used, function-guaranteed unit

Technical Information

• Manufacturer: Sanden
• Model: SD6V12 1439F 1439
• Product Codes: 9646273380, 6453KS
• Other Numbers: 6453LN
• Pulley Diameter: 119 mm (approx.)
• Rib Count: 6
• Mounting Holes: 4
• Oil Type: PAG 46
• Oil Quantity: 135 ml

Compatibility

Commonly fitted to various PSA models including Citroen Berlingo, Citroen C2, Citroen C3, Citroen C3 Pluriel, Citroen Xsara, Citroen Xsara Picasso, Peugeot 206, Peugeot 307 and Peugeot Partner. Always verify part numbers and vehicle build codes before ordering to ensure exact fitment.

Installation & Service Notes

Replacement should be performed by a qualified technician or an experienced DIYer with the correct tools. Typical service steps: safely recover refrigerant, disconnect the battery, remove the drive belt, disconnect electrical connectors and refrigerant lines, unbolt the compressor, fit the replacement unit, add the specified PAG 46 oil (135 ml), vacuum the system and recharge refrigerant according to the vehicle specification, then check for leaks and correct operation. Torque fasteners to manufacturer values and replace O-rings as required.

Common Faults And Expected Lifespan

Failures on A/C compressors commonly result from bearing wear, shaft seal leaks, clutch or pulley failure, contamination from system debris, or loss of lubrication. Lifespan depends on usage and maintenance; regular A/C service and correct refrigerant/oil levels prolong service life. Replace the compressor if you observe loud bearing noise, loss of cooling performance, visible oil or refrigerant leaks, or clutch engagement issues.

This Sanden SD6V12 compressor is a practical replacement option for repairing A/C systems on compatible Citroen and Peugeot vehicles. Verify compatibility with your vehicle using the listed product codes before purchase.