Audi A6 2.5L TDI (AEL engine)
but it is going into a 86 4000cs quattro
so none of the plugs match.
82 Diesel Vanagon 5 speed
86 Turbo diesel Jetta 6 speed
86 4000cs Quattro (hopefully with 2.5L TDI this winter)
74 914 2.0
76 2002
You will need to re-calibrate the settings on the back of the instrument cluster in the dash as well - there is a small slider switch to select which engine is fitted I think?




