Description
Air Intake Hose 1.4 HDi 66 kW for Citroën and Peugeot Vehicles
This high-quality replacement air intake hose is designed for 1.4 HDi (66 kW) diesel engines used in selected Citroën and Peugeot models. Ideal for professional garages and DIY mechanics, the hose restores correct air flow to the engine, prevents vacuum leaks and helps maintain fuel economy and engine response. Commonly searched by OE numbers 9646926280 and 143422, this part is a direct-fit solution for vehicles that require reliable intake plumbing.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C3; Peugeot 1007
- Product Codes: 9646926280
- Other Numbers: 143422
Function And Fitment
The intake hose channels filtered air from the airbox toward the engine intake tract and turbocharger on turbocharged variants. It must maintain an airtight connection under varying boost and vacuum conditions. A properly fitted hose ensures stable air metering, consistent turbo response and prevents unmetered air from causing rough idling or reduced power.
How To Replace
Replacement is straightforward for a competent mechanic or experienced DIYer. Typical steps:
- Park the vehicle on a level surface, let the engine cool and disconnect the negative battery terminal if working near sensors.
- Loosen and remove the clamps securing the hose at the airbox and at the intake/turbo inlet.
- Carefully detach any vacuum lines, breather hoses or sensor connectors attached to the hose—label them if needed.
- Remove the worn hose and inspect mating surfaces for oil, debris or sharp edges; clean before fitting the new hose.
- Install the new hose, fit clamps evenly and tighten to hand-firm plus a small additional turn—avoid over-tightening plastic fittings.
- Reattach any removed lines or sensors and verify all connections. Start the engine and check for leaks or abnormal noises.
Installation Recommendations
- Use quality stainless or plated clamps; replace brittle or corroded clamps rather than reusing them.
- Inspect adjacent components (airbox seals, throttle body, intercooler piping) and replace any damaged parts to avoid repeating failures.
- Ensure sensor connectors and vacuum lines are seated correctly to prevent fault codes.
- After installation, perform a visual leak check at idle and under light load; scan for engine fault codes if available.
Why This Part Commonly Fails
Intake hoses are exposed to heat cycles, engine bay vibration and oil contamination from the crankcase breather. Over time the rubber or silicone can harden, crack or split at bend points and clamp locations. Common failure causes include:
- Age-related material degradation leading to cracks and splits.
- Oil and soot build-up from the breather system accelerating rubber deterioration.
- Loose or corroded clamps allowing the hose to slip under boost or vacuum, causing leaks.
- Physical damage from improper routing or contact with hot components.
Symptoms of a failing intake hose include loss of power, irregular idle, turbo lag on turbocharged engines and illuminated engine warning lights due to incorrect air metering. Replacing a degraded hose typically restores engine performance and drivability.
Part numbers 9646926280 and 143422 are frequently used when searching for a direct-replacement intake hose for 1.4 HDi 66 kW Citroën and Peugeot applications; verify fitment against your vehicle model and engine code before installation.
