How to carry out replacement: Poly V-Belt 313 CDI (903.663, 903.662, 903.661) Mercedes Sprinter W903 Van
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Change Mercedes Sprinter W903 Van 312 D 2.9 4x4 (903.461, 903.462) Poly V-Belt yourself – manuals and video tutorials

How to change serpentine belt on MERCEDES-BENZ Sprinter 3-T Van (W903) – replacement guide

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Download your free tutorial and fix MERCEDES-BENZ SPRINTER 3-t Box (903) 313 CDI 4x4 (903.662, 903.663) problems yourself Download for free 1.37 MB Poly V-Belt for Mercedes Sprinter W903 Van Shop now
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When to replace the Poly V-Belt on your MERCEDES-BENZ SPRINTER
Recommended replacement interval for the part category Serpentine belt : 6 year
Important!
This replacement procedure can be used for:
MERCEDES-BENZ SPRINTER 3-t Box (903) 308 CDI (903.661, 903.662, 903.663), MERCEDES-BENZ SPRINTER 3-t Box (903) 311 CDI (903.661, 903.662, 903.663), MERCEDES-BENZ SPRINTER 3-t Box (903) 313 CDI (903.663, 903.662, 903.661), MERCEDES-BENZ SPRINTER 3-t Box (903) 316 CDI (903.661, 903.662, 903.663), MERCEDES-BENZ SPRINTER 3-t Box (903) 311 CDI 4x4 (903.662, 903.663), MERCEDES-BENZ SPRINTER 3-t Box (903) 313 CDI 4x4 (903.662, 903.663), MERCEDES-BENZ SPRINTER 3-t Box (903) 316 CDI 4x4 (903.662, 903.663) … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Poly V-Belt for SPRINTER 3-t Box (903) and other MERCEDES-BENZ models
Alternative products
How to change Serpentine belt on Mercedes Sprinter W903 Van 313 CDI (903.663, 903.662, 903.661) – step-by-step instructions for straightforward car repair Serpentine belt
Tools
Replacement: serpentine belt – MERCEDES-BENZ SPRINTER 3-t Box (903). Tools you might need:
12-point socket # 17
Ratchet wrench
Fender cover
Wheel chock
Buy tools
Replacement: serpentine belt – MERCEDES-BENZ SPRINTER 3-t Box (903). AUTODOC recommends:
  • All work should be done with the engine stopped.
Replacement: serpentine belt – MERCEDES-BENZ SPRINTER 3-t Box (903). Use the following procedure:
  1. Step 1
    Open the bonnet.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    Secure the wheels with chocks.
    Step 4
    Lift the car using a jack or place it over an inspection pit.
    Step 5
    How to change Poly V-Belt on Mercedes Sprinter W903 Van 1995 - free PDF and video manuals
    Pull aside the V-ribbed belt tensioner pulley. Use 12-point socket No.17. Use a ratchet wrench.
  2. Step 6
    How to replace MERCEDES-BENZ SPRINTER 3-t Box (903) 313 CDI (903.663, 903.662, 903.661) 1996 Poly V-Belt - step-by-step manuals and video guides
    Remove the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ SPRINTER 3-t Box (903). AUTODOC experts recommend:
    Check the condition of the tensioner pulley and idler pulley. Replace them if necessary.
  3. Step 7
    Return the tensioner pulley to its initial position. Use 12-point socket No.17. Use a ratchet wrench.
    Step 8
    Pull aside the V-ribbed belt tensioner pulley. Use 12-point socket No.17. Use a ratchet wrench.
    Step 9
    Mercedes Sprinter W903 Van 312 D 2.9 (903.461, 903.462, 903.463) 1997 Poly V-Belt replacement: free workshop manuals
    Install the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ SPRINTER 3-t Box (903). Tip from AUTODOC:
    Make sure that the V-ribbed belt fits all pulleys snugly.
Comments – 2
  • @user_3776735
    19.07.2025 12:24
    Member
    having a belt routing diagram would be helpfull
    • @Graziana Venturi
      21.07.2025 10:31
      @user_
      Moderator
      This information is individual and requires familiarization with the repair manual for your car. Much depends on the vehicle configuration and engine.
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