Description
Air Connection For 1.6 e-HDi Engines For Citroën And Peugeot Vehicles.
Direct-fit intake air connection for 1.6 e-HDi petrol/diesel engines used in Citroën and Peugeot models. This durable intake pipe replaces the original part (OEM 9678406580) and restores proper airflow between the airbox and the turbo/intercooler assembly, helping to recover engine response and eliminate boost leaks. Perfect for professional workshops and DIY mechanics searching by part number or vehicle model.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën Berlingo B9; Citroën Berlingo III; Citroen C4 II; Citroën C4 Picasso; Peugeot 308; Peugeot Partner III; Peugeot Partner Tepee
- Product Codes: 9678406580
- Other Numbers: Not Available
Function
This part is an intake air duct that guides filtered air from the airbox to the turbocharger and/or intercooler (depending on vehicle configuration). It Maintains Designed Airflow, Supports Boost Pressure, And Ensures Stable Mass Airflow Sensor Readings — All Critical For Smooth Idle, Accurate Fueling, And Engine Performance.
How To Replace
- Prepare The Vehicle: Work On A Cooled Engine In A Safe Workspace. Park On Level Ground And Apply The Handbrake.
- Access The Part: Remove Engine Covers And Unclip Any Lines Or Sensors Secured To The Duct (Take Note Of Sensor Positions).
- Loosen Fasteners: Open Hose Clamps And Remove Any Retaining Clips Or Brackets Holding The Duct In Place.
- Remove And Inspect: Pull Out The Old Duct, Inspect Connecting Flanges, Seals, MAF Sensor And Clamps For Damage Or Contamination.
- Fit New Duct: Position The Replacement Pipe Correctly, Ensure Seals Sit Flush, Reconnect Sensors And Hoses In Their Original Locations.
- Tighten And Test: Secure Clamps Firmly (Avoid Over-Tightening), Start The Engine And Check For Air Leaks, Unusual Noises, Or Fault Codes. Clear Fault Codes If Present After Repair.
Installation Recommendations
- Use Quality Clamps And Replace Any Brittle Or Corroded Fasteners.
- Inspect And Clean The Mass Airflow Sensor And Air Filter While The System Is Open.
- Ensure All Connections Are Free From Twists And Are Properly Seated To Prevent Boost Leaks.
- Replace Sealing Rings Or Gaskets If They Show Signs Of Wear.
- After Installation, Verify System Integrity With A Road Test And Scan For Diagnostic Trouble Codes.
Common Failure Causes
The most frequent reasons these ducts fail are age-related cracking from heat and vibration, Oil And Soot Contamination From EGR Or Turbo Systems, Damage From Improperly Installed Clamps Or Engine Work, And Physical Impact Or Debris. Failures Typically Result In Loss Of Boost, Poor Throttle Response, Rough Idle, Increased Fuel Consumption Or Illumination Of Engine Fault Lights.
Compatibility And Notes
Designed For Vehicles Equipped With The 1.6 e-HDi Engine Family. Customers Often Search By The OEM Part Number 9678406580 — Use This Code To Confirm Fitment In Parts Catalogs And Workshop References.
Recommended For
Professional Garages, Service Technicians And Experienced DIYers Performing Intake Or Turbocharger System Repairs On Citroën And Peugeot 1.6 e-HDi Vehicles.
