300TD (123.193) L5-3.0L DSL Turbo (617.952) (1984)
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Valve Guide: Application and ID
NOTE: The valve guides 61 mm or 49.5 mm long have been replaced by valve guides 60 mm or 48.5 mm long.
In addition to their length, the valve guides are also different with regard to the shape of their grooves (arrows).
A Valve guide = 61 mm or 49.5 mm long
B Valve guide = 60 mm or 48.5 mm long
On engine 617.950 (USA) model year 1980 with increased output and on engines 617.951/952 only the shorter valve guides (B) may be installed in view
of the larger valve lift.
