Here is the infor concerning the Slide hammer end. Description of the Sir Tool made one:
Sir Tools Double Ended extractor tip. Wtih M22x1 and M22x1.5
threads. Used to remove the prechamber from the cylinder head. Engine OM601, 602, 603, 604, 615, 616, 617 Must be used with your slide hammer. Early version would fit a standard 5/8" thread slide hammer. The current tool has M12 threads for a metric slide hammer. See tool BU602-0033B slide-hammer adapter below.

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84 300D, 82 Volvo 244Gl Diesel