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.

Product Overview

This camshaft sprocket (cam gear) is an OEM-design replacement part intended for 1.6 HDi / 1.6 e-HDi diesel engines fitted to Citroën and Peugeot models. It is an essential component of the timing drive, transferring rotation from the timing belt to the camshaft to ensure precise valve timing. The part is commonly searched by original part numbers, making it easy for professional technicians and DIY enthusiasts to find and order.

Key Benefits

• Direct fit for specified 1.6 HDi / 1.6 e-HDi engines — simplifies installation and reduces downtime.
• Exact tooth profile for reliable timing belt engagement and minimal slack or noise.
• Suitable For Workshops And Experienced DIY Mechanics — ideal when replacing timing components or servicing the timing belt system.

How It Works And When To Replace

The camshaft sprocket mounts on the camshaft and engages the timing belt, converting the belt’s linear motion into camshaft rotation. Proper function is critical for valve timing, engine performance, fuel economy and emissions. Replace the sprocket when worn teeth, corrosion, damaged mounting surfaces or excessive play are observed. It is good practice to inspect or replace the sprocket whenever the timing belt, tensioner or idlers are serviced.

Installation Guidance

Replacement Requires Accurate Timing Alignment. General steps: disconnect the battery; secure the engine at the correct timing position (follow manufacturer procedure); remove timing covers; mark timing positions; loosen and remove the timing belt; remove the old sprocket and fit the new unit; reassemble ensuring timing marks remain aligned; fit a new belt, tensioner and idlers as recommended; torque fasteners to manufacturer specifications and verify timing before running the engine. Use proper tools (timing lock tools, torque wrench) and follow the service manual for torque values and sequence.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: 1.6 HDi / 1.6 e-HDi Engines (DV6 Family Applications)
• Product Codes: 9657477580, 0805H2
• Other Numbers: 0805H2, 9657477580

Recommended Maintenance

Inspect The Sprocket During Every Timing System Service. Timing belt replacement intervals vary by model and engine variant; consult the vehicle’s maintenance schedule. When in doubt, replace the belt, tensioner and idlers together with any worn sprockets to avoid secondary damage. Always follow manufacturer procedures and torque specifications for assembly.

Why This Part Commonly Fails

• Wear And Tooth Degradation — long service life, contaminated oil or abrasive particles can accelerate wear.
• Corrosion Or Seizing — exposure to oil leaks or coolant can promote corrosion at the mounting bore or fasteners.
• Misalignment Or Worn Belt Components — a worn tensioner or idler may cause uneven loading and premature sprocket wear.
• Improper Installation — incorrect timing alignment or improper torque on the camshaft fastener can lead to failures.

Typical Vehicle Applications (Examples)

Commonly Used On Various Citroën And Peugeot Models Equipped With 1.6 HDi / 1.6 e-HDi Engines, For Example: Citroën C2, C3, C4, C5, Berlingo; Peugeot 206, 207, 307, 308, Partner. Compatibility Depends On Engine Variant And Production Date — Verify With The Part Numbers Above.

Final Notes

This part is most often found and ordered by its product codes 9657477580 and 0805H2. Fitment and proper installation directly affect engine timing and performance — if replacing the sprocket, consider simultaneous replacement of the timing belt system components to ensure long-term reliability.