When to replace the Thermostat on your VW GOLF
Recommended replacement interval for the part category Thermostat, coolant : 50000 km
Important!
This replacement procedure can be used for:
VW GOLF PLUS (5M1, 521) 2.0 TDI, VW GOLF PLUS (5M1, 521) 2.0 TDI 16V View more

The steps may slightly vary depending on the car design.
Similar video tutorial
This video shows the replacement procedure of a similar car part on another vehicle
All the parts you need to replace – Thermostat for GOLF PLUS (5M1, 521) and other VW models
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Thermostat, coolant
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Thermostat Housing
Tools
Replacement: engine thermostat – VW GOLF PLUS (5M1, 521). Tools you might need:
Wire brush
All-purpose cleaning spray
Sealant
Torque wrench
Combination spanner #10
Drive socket # 7
Drive socket # 10
XZN socket bit # 6
Torx bit T27
Ratchet wrench
Funnel
Clic-R collar pliers
Needle nose pliers
Fluid container
Microfibre towel
Fender cover
Replacement: engine thermostat – VW GOLF PLUS (5M1, 521). Professionals recommend:
  • Check the condition of the coolant every time you replace the thermostat. Change the coolant if necessary.
  • Please note: all work on the car – VW GOLF PLUS (5M1, 521) – should be done with the engine switched off.
  • All work should be done with the engine stopped.
Carry out replacement in the following order:
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DIY VW GOLF PLUS (5M1, 521) Thermostat replacement - online guide
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