Probably about right for price. I have changed one or more glow plugs
on our 1983 MB diesel. Uses 5.
This fall I discovered how to easily check the resistance of each glow
plug from the connector going to the relay control. Is there a similar
test spot on the VW? Otherwise you need to remove the connecting wire
and check the resistance of each glow plug. Well, not the resistance
exactly, but whether the plug is open or is still working. If not
open, then it is still ok.
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