Diesel Injector Seal Removal Tool

AST5207

Diesel Injector Seal Removal Tool

AST5207  is used to remove the diesel injector seal from the cylinder head.

When the diesel injector is removed from the engine, the sealing washer may remain in the aperture, retained by corrosion or carbon deposits. The used seal must be removed from the engine before refitting of the injector.


  • Removes used seal from the cylinder head before refitting of the injector
  • Tool is screwed into the washer providing a secure grip during extraction
  • Suitable for a wide range of injector seal sizes
  • Can be used in conjunction with a slide hammer

With this kit you may also need:

Diesel Injector Seat Cutter Set - BMW, PSA, Fiat, Mercedes, Renault,  VAG, Vauxhall/Opel
AST6125

Diesel Injector Seat Cutter Set - BMW, PSA, Fiat, Mercedes, Renault, VAG, Vauxhall/Opel

AST6125 Diesel Injector Seat Cutter Set provides a reliable method of removing carbon build-up and reworking the seating face of the cylinder head to ensure that the injectors can be correctly installed.


AST6125 comprises:

Dummy injector post with guide nozzle for accurate alignment of the cuttter

T-bar handle for controlled rotation of the cutter during the cleaning/reworking operation

4 seat cutting bits covering common injector sizes and seat forms:

        - 15mm flat cutter, 19mm body diameter

        - 17mm flat cutter, 17mm body diameter

        - 17mm flat cutter, 19mm body diameter

        - 17mm angled cutter, 21mm body diameter


Typical applications include:

Audi, BMW, Citroën, Fiat, Mercedes-Benz, Nissan, Opel, Peugeot, Renault, Seat, Skoda, Vauxhall, Volkswagen


Individual parts within the set:

    •   AST6125-1     Dummy Injector

    •   AST6125-2    T-bar Handle

    •   AST6125-3    Cutter - 15mm flat x 19mm body

    •   AST6125-4    Cutter - 17mm flat x 17mm body

    •   AST6125-5    Cutter - 17mm flat x 19mm body

    •   AST6125-6    Cutter - 17mm angled x 17mm body

Diesel Injector Seat Cutter Set - BMW, PSA, Fiat, Mercedes, Renault,  VAG, Vauxhall/Opel

Alternative Tool Option:

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