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Removing and installing ceramic glow plugs > < Glow plug system

A4 Cabriolet Mk2

Different types of glow plugs
Different types of glow plugs
Different types of glow plugs are installed in the 4-cylinder TDI engine in Audi A4 vehicles.
Engine codes AVB, AVF, AWX
t  These engines are fitted exclusively with metal glow plugs.
Engine codes BKE, BRB, BPW, BRC
   
t  These engines can be fitted with either metal or ceramic glow plugs.
A - Bosch ceramic glow plugs are colour-coded with a „white seal“-arrow- and have a chamfered shoulder (⇒ detail view) at the tip.
A - NGK ceramic glow plugs are colour-coded with a „white seal (on some versions painted over in silver)“-arrow- but do not have a chamfered shoulder at the tip.
B - Metal glow plugs are colour-coded with a „red seal“-arrow-.
  Caution
Important: Always observe the special instructions for handling ceramic glow plugs. The metal glow plugs do not require any special handling procedures → Anchor.
  N28-10022

Removing and installing ceramic glow plugs > < Glow plug system