my own kit is over 10 years old and shows only glow plug adapters for (1988-89) 190E 2.5L, 1991-99) E300, and 2005 E320 CDI. However, since 10 years ago the 2 Harbor Freight kits have been re-configured. Not sure how much room is available to connect a glow plug adapter with an air hose on it.

Perhaps one of our Members has the adapter you need and could rent or loan it to you.

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84 300D, 82 Volvo 244Gl Diesel