This camshaft pulley is a direct-fit replacement for Citroën and Peugeot diesel engines in the 1.4 HDi and 1.6 HDi family. Designed to interface with the timing belt and camshaft drive, the pulley restores precise valve timing and helps eliminate noise and vibration caused by worn or failing pulleys. Ideal for professional workshops and competent DIY mechanics, the unit is often searched for by its OEM numbers 9640473280, 9657477580 or reference 0805H2 — making it easy to find and order for scheduled maintenance or urgent repairs.

Technical Information

• Manufacturer: Stellantis / Citroén / Peugeot
• Model: 1.4 HDi And 1.6 HDi Engines (Examples Of Compatible Vehicles: Citroën C3, C4, Berlingo; Peugeot 206, 207, 307, 308, Partner)
• Product Codes: 9640473280, 9657477580, 0805H2
• Additional Numbers: (0805.H2), OEM Cross Reference Numbers As Listed Above

Function And Importance

The camshaft pulley transfers rotational drive from the timing belt to the camshaft, ensuring accurate valve timing. Proper operation is critical for engine performance, fuel economy and emissions. A faulty pulley can cause timing irregularities, leading to rough running, misfires or, in worst cases, engine damage if timing is severely compromised.

When And Why It Fails

Camshaft pulleys typically fail due to bearing wear, contamination from oil or debris, corrosion, or damage to the pulley face (where the belt runs). Symptoms include unusual rattling or whining from the timing cover area, uneven idling, loss of power or visible signs of belt misalignment. Failure is most commonly detected during timing belt service or when related components such as tensioners or belts have reached the end of their service life.

Recommended Replacement Interval

Replacement Is Commonly Performed During Timing Belt Or Timing Component Service. Typical Replacement Intervals Follow The Vehicle Manufacturer’s Schedule, Often In The Range Of 60,000–160,000 Km Depending On Model And Service Conditions. Replace The Pulley Immediately If Bearing Play, Noise Or Visible Damage Is Found.

Installation Recommendations

• Carry Out Replacement With Engine Cold And Follow Safe Lifting And Support Procedures.
• Remove Timing Belt Cover, Loosen Tensioner And Remove Timing Belt Before Removing The Pulley.
• Check Camshaft And Crankshaft Timing Marks, Replace Tensioner And Belt If Showing Wear, And Refit New Pulley With Correct Alignment.
• Always Use Manufacturer Torque Specifications For Fasteners And Confirm Valve Timing After Assembly.
• Inspect Surrounding Components (Tensioner, Idlers, Belt) And Replace As A Kit Where Possible To Prevent Repeat Failures.

Most Common Failure Causes

• Bearing Wear Or Seizure Due To Age, High Mileage Or Oil Contamination.
• Damage From Misaligned Or Worn Timing Belt Causing Uneven Load On Pulley.
• Corrosion Or Physical Damage From Impact Or Debris.
• Failure Of Associated Components (Tensioner/Idler) Leading To Excessive Stress.

Choose This Camshaft Pulley When You Need A Reliable, OEM-Referenced Replacement For 1.4 HDi And 1.6 HDi Engines. Ordering By The Provided Part Numbers (9640473280, 9657477580, 0805H2) Makes Identification Quick For Both Garages And DIY Enthusiasts.

This camshaft sprocket (OE 9657477580 / 0805H2) is an essential timing component for many Citroën and Peugeot cars equipped with the 1.6 HDi (DV6) diesel engine. Designed to transmit rotary motion from the timing belt to the camshaft, it ensures precise valve timing for optimal engine performance, fuel economy and reduced emissions. The part is commonly searched by its product numbers 9657477580 and 0805H2, so including these references in your search will help you find the correct replacement quickly.

Why This Part Matters

The Camshaft Sprocket maintains correct camshaft phasing relative to the crankshaft. Any wear or damage to the sprocket teeth or mounting face can cause timing drift, noisy operation, irregular idling, loss of power or even catastrophic engine damage if valve timing is lost. Replacing a worn or damaged sprocket restores precise timing control and helps protect the cylinder head and valves.

Suitable Vehicles

Fits Many Citroën And Peugeot Models Equipped With The 1.6 HDi (DV6) Engine — For Example: Citroën C3, C4, Berlingo And Similar; Peugeot 207, 307, 308, Partner And Similar. Always Search By OE Number (9657477580 / 0805H2) To Locate The Correct Fitment.

Installation Recommendation

• Replace As Part Of A Timing Kit: When replacing the camshaft sprocket, it is strongly recommended to replace the timing belt, tensioner and idler pulleys at the same time to avoid premature failure of the new part.
• Engine Preparation: Set Engine To Top Dead Center (TDC) On Cylinder 1 And Lock Camshaft/Crankshaft As Required By The Manufacturer.
• Removal And Fitment: Remove The Old Belt, Replace The Sprocket, Refit The Belt Ensuring Timing Marks Are Correct, And Tension The Belt To The Specified Value.
• Tools And Precautions: Use Appropriate Locking Tools And A Calibrated Torque Wrench. Follow Manufacturer Procedures To Avoid Timing Errors Or Damage.

Most Common Failure Reasons

• Wear Of Teeth Due To Long Service Life Or Abrasive Contamination.
• Damage Caused By A Failed Tensioner Or Idler Resulting In Belt Slip Or Jumps.
• Oil Contamination Leading To Accelerated Wear Or Belt Degradation.
• Corrosion Or Mechanical Impact During Previous Repairs Or Engine Events.
• Improper Installation Or Incorrect Timing During Previous Work.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Camshaft Sprocket For 1.6 HDi (DV6) Engines
• Product Codes: 9657477580, 0805H2
• Additional Numbers: 0805H2 | 9657477580

Service Tips For Mechanics And DIY Enthusiasts

Inspect The Timing Belt And All Related Components For Signs Of Wear Before Reassembly. Ensure Timing Marks Align Exactly After Installation And Rotate The Engine By Hand Through Two Full Revolutions To Confirm There Is No Interference. After First Start, Recheck Timing Belt Tension And Inspect For Any Unusual Noises Or Leaks.

Purchase And Search Advice

Search Using The OE Numbers 9657477580 Or 0805H2 For The Fastest Match. Listing The Part Number In Your Order Ensures You Receive The Correct Camshaft Sprocket For The 1.6 HDi Engine.