Description
Air intake connection to the Turbo of the 1.6 HDi engine for Citroën and Peugeot vehicles.
Designed as a direct-fit replacement for the Turbo inlet hose on 1.6 HDi engines, this component restores proper air delivery to the Turbocharger, helping to eliminate boost leaks that cause power loss, turbo lag or irregular engine behavior. It is aimed at professional workshops and experienced DIY mechanics who often search by OE or product code (listed below) when sourcing replacement parts.
Key Features and Function
The Turbo intake hose channels filtered air from the airbox or intercooler into the Turbocharger inlet. It must combine flexibility to accommodate engine movement with a sealed, pressure-resistant path for boosted air. A compromised hose produces boost loss, reduced engine performance, increased smoke under load and can trigger fault codes or limp-home mode on some vehicles.
Compatibility and Fitment
This hose is compatible with a range of Citroën and Peugeot models fitted with the 1.6 HDi engine. Always match the OE/product codes when ordering to ensure correct fitment. Typical compatible models include:
- Citroën Berlingo
- Citroën C3
- Citroën C3 Picasso
- Citroën C4
- Citroën C4 Picasso
- Citroën C5
- Citroën Xsara Picasso
- Peugeot 307
- Peugeot 308
- Peugeot 407
- Peugeot Partner
Replacement Procedure
Replacement is straightforward for trained technicians and competent DIYers. Typical steps:
- Allow Engine to cool and relieve any residual boost pressure.
- Remove engine covers or intake ducting as required to access the Turbo inlet.
- Loosen hose clamps at both ends and detach any brackets or sensor connections if present.
- Inspect mating surfaces on the Turbo inlet and the air-side pipe for damage or oil contamination; clean as necessary.
- Install the new hose in the correct orientation, ensuring there are no twists or kinks, then tighten clamps evenly to obtain a secure seal.
- Start the Engine and check for boost leaks at idle; perform a short road test to confirm restored performance.
Expected Lifetime And Failure Causes
Service life varies with operating conditions; a well-maintained hose typically lasts several years. The most common failure mechanisms are:
- Age-related hardening and cracking due to repeated heat cycles.
- Oil contamination from worn turbo seals or crankcase ventilation, which degrades the hose material.
- Mechanical damage from chafing, incorrect routing or contact with hot components.
- Loose or corroded clamps allowing pressurized air to escape.
Installation Recommendations
Use quality replacement hose clamps and replace any corroded brackets when fitting the new hose. Avoid overtightening clamps to prevent crushing the hose; tighten evenly until the seal is secure. If oil contamination is found, inspect the Turbo seals and the PCV/ventilation system before reinstalling the new hose to prevent premature failure.
Most Common Failure Reasons
The part most often fails due to heat-induced aging and oil contamination originating from Turbo seal leaks or crankcase ventilation faults. Small cracks or softened areas quickly develop into boost leaks under pressure.
Technical information
- Manufacturer: Stellantis (Citroën, Peugeot)
- Model: 1.6 HDi Compatible Models — Citroën Berlingo; Citroën C3; Citroën C3 Picasso; Citroën C4; Citroën C4 Picasso; Citroën C5; Citroën Xsara Picasso; Peugeot 307; Peugeot 308; Peugeot 407; Peugeot Partner
- Product Codes: 9656953680; 9687883780
- Other Numbers: 143453; 1434E1; 14340; 121000; NFP
