Description
Air intake 1.4 HDi 16V 8HY for Citroën and Peugeot vehicles
This air intake distribution unit is designed for 1.4 HDi 16V engines (engine code 8HY) fitted to selected Citroën and Peugeot models. It restores correct air delivery to the intake tract, helps maintain stable idling and engine response, and ensures reliable operation of sensors and vacuum circuits attached to the intake system. The part is commonly searched by its OEM numbers and is intended for professional mechanics and experienced DIYers who service small diesel engines.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: 1.4 HDi 16V (Engine Code 8HY) — Fits Citroën C3, Peugeot 1007
- Product Codes: 9647250480, 0361L4
- Other Numbers: 8HY, NFP
Installation Recommendations
Remove intake hoses and any connected vacuum lines or sensor plugs before unbolting the unit from the cylinder head. Label electrical connectors and hoses to ensure correct refitting. Replace the intake manifold gasket and any brittle hoses or clamps at the same time. Clean mating surfaces thoroughly to prevent air leaks. Tighten bolts to the manufacturer’s torque settings and check for vacuum/air leaks after installation. Typical replacement time for a trained technician is around 0.5–2 hours, depending on workshop access and vehicle layout.
Most Common Failure Causes
Plastic or composite intake components on small diesel engines commonly develop cracks or broken vacuum ports due to heat cycles and vibration. Gaskets and seals deteriorate over time, causing intake leaks that lead to rough idle, reduced engine performance, increased fuel consumption and diagnostic trouble codes related to airflow or mixture. Carbon and soot accumulation from the EGR system can block passages or accelerate gasket failure. Physical impact or improper removal/installation can also damage mounting points and sensors.
Practical Notes For Diagnosis
Typical symptoms of a failing intake distributor include unstable idle, turbo lag or loss of response, and engine management warnings related to airflow. Inspect the part visually for cracks, check all vacuum connections, and confirm sensor wiring integrity. When replacing the unit, always fit a new gasket and verify that associated hoses, clamps and sensors are in good condition to avoid repeat failures.
OE Codes and clear model fitment references (9647250480, 0361L4) help customers and professionals quickly find the correct spare part for Citroën C3 and Peugeot 1007 applications with the 1.4 HDi 16V (8HY) engine.
