Last one. Fits 1981 To 1985 300D, 300CD, 300TD and 300SD
Excellent tested used glow relay. No cover included but can be purchased separately below
Late OM617 5 Cylinder Glow Plug Relay - USED
$58.00
SKU:
ELT-COMGPRU-USED 
Product Details
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$14.00
Late 616 and 617 GLOW RELAY Cover Plate ( Used )
Fits 1981 to 1985 240D 300D 300TD 300CD 300SD
Good used plastic cover for glow relay as shown
$65.00
W126 300SD Glow Plug System Wiring Harness - USED
For 1981 to 1984 300SD Diesel engine.
Wire harness as shown. Note this one is for the 300SD as it has the long wire going down to the oil pressure sending unit.