Description
Oil filter housing for 1.6 HDi 16V engines for Citroën and Peugeot vehicles. With oil–coolant heat exchanger.
Overview
High-quality oil filter housing designed for 1.6 HDi 16V engines used across a range of Citroën and Peugeot models. This unit integrates an oil-to-coolant heat exchanger, combining oil filtration mounting and engine oil cooling in one compact assembly. It is often searched by product codes 1103N9 and 1103K2, making it easy to locate for quick replacement.
Benefits
- Direct fit replacement for affected 1.6 HDi diesel engines, ensuring correct positioning of the oil filter and heat exchanger.
- Integrated oil–coolant heat exchanger helps stabilize oil temperature and contributes to engine longevity under load.
- Robust construction suited for workshop installation and DIY repairs by experienced home mechanics.
Function And Symptoms
The oil filter housing provides a mounting point for the oil filter and channels engine oil through an integrated oil-to-coolant heat exchanger. Common symptoms of a failing housing include external oil leaks around the housing or filter area, coolant contamination with oil (or vice versa), visible corrosion on the heat exchanger, and oil pressure fluctuations. Any sign of cross-contamination between oil and coolant requires immediate attention to prevent engine damage.
Installation Recommendations
Because the housing incorporates a coolant circuit, replacement requires careful handling of both engine oil and cooling fluid. Recommended installation steps:
- Work On A Cool Engine: Allow the engine to cool completely before starting.
- Drain Engine Oil And Coolant Partially: Collect and dispose of fluids according to local regulations.
- Remove Oil Filter And Disconnect Hoses: Detach oil filter, coolant lines and any sensor connectors; retain or replace clamps as needed.
- Replace Seals And O-Rings: Always fit new gaskets and O-rings supplied with the housing to ensure a reliable seal.
- Install New Housing And Reconnect All Lines: Make sure mating surfaces are clean and free of debris. Refill oil and coolant to the correct levels and bleed the cooling system if required.
- Final Checks: Inspect for leaks with the engine at operating temperature and verify oil pressure is within normal range.
Why This Part Commonly Fails
- Age And Thermal Cycling: Repeated heating and cooling causes gasket hardening and metal fatigue, leading to leaks or cracks.
- Corrosion And Electrochemical Wear: Exposure to coolant chemistry and contaminants can corrode the heat exchanger, compromising seals between oil and coolant circuits.
- Improper Installation Or Reuse Of Old Seals: Reusing worn O-rings/gaskets or incorrect torqueing can produce persistent leaks.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën Berlingo; Citroën C2; Citroën C3; Citroën C4; Citroën C4 Picasso; Citroën C5; Citroën Xsara Picasso; Peugeot 206; Peugeot 307; Peugeot 407; Peugeot Partner; 1.6 HDi 16V Engines
- Product Codes: 1103N9, 1103K2
- Other Numbers: Not Specified
Additional Tips For Mechanics
- Always Replace Associated Seals: When fitting a new housing, fit new O-rings and gaskets to prevent immediate rework.
- Inspect Engine Oil And Coolant: If contamination is suspected, flush both systems and change oil and filter after repairing the housing.
- Use Correct Workshop Tools: Ensure hose clamps and connectors are seated correctly to avoid kinks or restricted flow in the coolant circuit.
Why Choose This Unit
This oil filter housing is a practical, workshop-friendly replacement for mechanics and experienced DIYers working on 1.6 HDi engines. Its integrated oil–coolant heat exchanger maintains oil temperature control while providing a factory-style fitment, and the referenced product codes 1103N9 and 1103K2 make identification fast when searching parts catalogs.
