Description
Exhaust and intake camshaft in assembly for 1.4 HDI 66 kW 8HY engines for Citroën and Peugeot vehicles. Fully functional engine.
This camshaft assembly is designed for the 1.4 HDI 16V 8HY (66 kW) diesel powerplant and is ideal for professional workshops and experienced DIY mechanics seeking a direct-fit replacement. The assembly includes both exhaust and intake camshafts in one unit, restoring precise valve timing and ensuring smooth operation of the cylinder head. Commonly searched under part codes 0801Z9 and 0801AH, this item fits a range of Citroën and Peugeot models and helps recover engine performance, reduce valve-train noise and prevent misfires caused by worn cam lobes or timing wear.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: 1.4 HDI 16V 8HY, 66 kW — Compatible Examples: Citroën C3, Peugeot 1007
- Product Codes: 0801Z9, 0801AH
- Other Numbers: Not Specified
Function And Benefits
The camshaft assembly controls the opening and closing of intake and exhaust valves according to the engine’s timing. A correct camshaft profile and precise timing ensure optimal combustion, fuel efficiency and low emissions. Replacing a worn camshaft assembly restores valve timing accuracy, reduces mechanical noise from the valve train and improves low- and mid-range torque.
Signs That Replacement Is Needed
- Ticking or knocking noise from the cylinder head area
- Loss of power, uneven idling or misfires
- Increased oil consumption or metallic particles in oil
- Timing belt/chain-related faults or irregular valve lash
Most Common Causes Of Failure
- Poor Lubrication: Oil starvation, degraded oil or sludge leads to accelerated cam lobe and bearing wear.
- High Mileage Wear: Normal mechanical wear over time, especially with aggressive driving or extended oil-change intervals.
- Timing Component Failure: Worn or failed timing belt/chain, tensioner or guides can overload the camshaft and related components.
- Contaminants In Oil: Debris or metallic particles accelerate surface damage.
Replacement And Installation Recommendations
Replacement of the camshaft assembly requires careful timing and mechanical knowledge. Typical steps include setting the engine to Top Dead Center (TDC), removing the timing drive (belt or chain), releasing camshaft bearing caps, extracting the old assembly and fitting the new unit with correct alignment. Always replace associated timing components (belt/chain, tensioner, guides) and valve cover gaskets when servicing the head. Inspect camshaft journals and bearings for wear, clean oil passages thoroughly and prime lubrication before first start.
Do Not Use Improper Torque Values From Non-Official Sources; Tighten Fasteners To Manufacturer Specifications. After installation, rotate the engine by hand to verify timing alignment and absence of interference before initial start-up. Allow the engine to reach operating temperature and recheck valve clearances if applicable.
Practical Advice For Mechanics And DIY
- Plan For A Full Timing System Service: Replace belt/chain and tensioner while camshafts are accessible.
- Use Clean Engine Oil And A New Oil Filter After Reassembly To Prevent Early Wear.
- Inspect Associated Parts: Camshaft seals, followers/tappets, and cylinder head for scoring or damage.
- Test Drive And Monitor: Check for unusual noises, oil leaks and correct running once reassembled.
This camshaft assembly is a direct-replacement solution for workshops repairing 1.4 HDI 8HY engines and offers a reliable path to restore engine smoothness and performance when wear or timing-related damage is present.
