Description
Tensioner for alternator and air conditioning belt for Citroën C1 and Peugeot 107. Without the 2 extra small screws shown in the photograph.
Product Overview
This is a replacement belt tensioner designed for the alternator and air conditioning drive on Citroën C1 and Peugeot 107 models. The unit restores correct belt tension and alignment, reducing slip, noise and premature wear of the serpentine/auxiliary belt. Ideal for professional workshops and DIY mechanics who search by reference numbers (see Technical Information).
Compatibility And Fitment
Fits Citroën C1 and Peugeot 107. Frequently located and ordered by reference numbers listed below. Before installation confirm you have the correct part by comparing the reference numbers and the physical shape with the original tensioner.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C1, Peugeot 107
- Product Codes: 128143, 5708A0, 6822QX, 6822TH
- Other Numbers: 128143
Installation Recommendations
Installation should be performed by an experienced mechanic or a competent DIY enthusiast with appropriate tools. General replacement procedure:
- Park the vehicle on a level surface, switch off the engine and allow it to cool.
- Relieve belt tension using the appropriate spanner or tensioner tool and remove the accessory belt following the belt routing diagram.
- Loosen and remove the tensioner mounting bolts, remove the old unit and clean the mounting face.
- Fit the new tensioner, tighten bolts to the manufacturer’s torque specification, refit the belt and set correct tension.
- Start the engine and inspect belt tracking, noise and pulley alignment. Re-check bolt torque after a short test drive.
Replace the drive belt and any worn idler pulleys at the same time for a reliable repair. Always follow the vehicle manufacturer’s service instructions and torque values.
Service Interval And Expected Life
Service life depends on driving conditions and maintenance. Tensioners commonly last tens of thousands of kilometres, but it is good practice to inspect the tensioner and belt at each major service and replace the tensioner when replacing the belt or when noise, play or rough running is noticed.
Why The Part Most Often Fails
- Bearing Wear: Bearings inside the tensioner pulley wear out over time, producing noise and reduced rotation smoothness.
- Spring Fatigue: Internal spring can lose tension, leading to poor belt tension and slipping.
- Contamination: Dirt, road salt or oil contamination accelerates wear and damages seals.
- Oil Leaks: Leaks from nearby seals (crankshaft/camshaft) can degrade the pulley and bearing.
- Improper Belt Tension or Misalignment: Incorrect installation or a damaged belt can overload the tensioner and shorten its life.
Practical Tips
- When replacing the tensioner, inspect the belt condition and the condition of all accessory pulleys.
- Listen for bearing noise (squeal, growl) and check for lateral play on the pulley shaft before removal.
- Keep the mounting area clean and free of oil to extend the service life of the new unit.
- Units are often searched by their product codes—enter the numbers above in your parts search for quick results.
Note
Does not include the two small screws shown in the photograph.
