Description
Timing camshaft sprocket for CITROËN and PEUGEOT vehicles with 1.6 HDi engines
This camshaft sprocket is a direct-fit replacement designed for 1.6 HDi engines. It restores correct timing drive geometry, ensuring reliable valve timing and smooth engine operation. The part is often searched by its OEM references 9657477580 and 0805H2, which makes it easy to find for professional garages and DIY mechanics. Manufactured to match the original form, fit and function, this sprocket is suitable for routine timing system maintenance or repair after component failure.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: 1.6 HDi (DV6) Engines
- Product Codes: 9657477580, 0805H2
- Other Numbers: 0805H2
Compatibility And Typical Applications
Fits a range of Citroën and Peugeot models equipped with the 1.6 HDi (DV6) family of diesel engines. Common applications include small and compact passenger cars and light commercial vehicles from both marques. Always compare the OEM product code (9657477580 / 0805H2) with the unit you are replacing for the best match.
Function And Symptoms Of Failure
The camshaft sprocket transmits rotation from the timing belt to the camshaft, maintaining valve timing. When the sprocket wears or is damaged, symptoms can include unusual engine noise from the timing cover area, rough idling, loss of power, misfires, difficulty starting, or timing belt slippage. In severe cases, incorrect valve timing can lead to valve-to-piston contact and significant engine damage.
Replacement And Installation
Replacement should be performed by a competent mechanic or an experienced DIY technician familiar with timing system procedures. Typical replacement steps:
- Secure vehicle on a level surface and follow safe working procedures for the engine (allow engine to cool and immobilize vehicle).
- Remove engine covers, auxiliary drive components or timing cover as required to access the timing sprocket.
- Align engine to Top Dead Center (TDC) following the manufacturer’s timing marks before removing the timing belt.
- Release belt tensioner and remove timing belt to access the camshaft sprocket.
- Remove the camshaft sprocket retaining bolt(s) and replace the sprocket with the new unit, ensuring correct orientation and alignment with timing marks.
- Refit timing belt, set correct tension per manufacturer specification, and rotate the engine by hand through two full revolutions to verify timing marks and tension.
- Tighten fasteners to Manufacturer Torque Specifications and reassemble removed components.
Recommended Installation
- Replace Timing Belt And Tensioner At The Same Time. It Is Best Practice To Replace The Timing Belt, Tensioner, And Idler Pulleys When Servicing The Camshaft Sprocket To Avoid Repeat Labor.
- Use Manufacturer Torque Values And Any Specified Fastener Replacement Rules (Some Bolt Types Are Single-Use).
- Inspect Camshaft And Crankshaft Seals For Oil Leaks; Oil Contamination Shortens Component Life.
- Clean Mating Surfaces And Ensure No Debris Enters The Timing Cover Area During Work.
- Verify Timing Marks After Assembly By Rotating The Engine Manually; Only Start Engine After Confirming Correct Timing.
Most Common Failure Reasons
- Wear Of Teeth Due To Long Service Life Or Contamination By Oil/Sludge.
- Improper Belt Tension Or Incorrect Installation Leading To Slippage Or Premature Wear.
- Corrosion Or Seizure Causing Difficulty In Removal And Potential Damage During Service.
- Timing Belt Failure Or Sudden Load Which Can Damage The Sprocket, Keyway Or Retaining Bolt.
- Fatigue Or Damage From Repeated Engine Overloads Or Missed Maintenance Intervals.
This camshaft sprocket is an essential part of the timing system for 1.6 HDi engines. Use the OEM references 9657477580 and 0805H2 when searching to ensure correct fitment. For efficient and long-lasting repairs, pair this sprocket replacement with a full timing kit and follow the vehicle manufacturer’s service instructions.
