Thermostat Housing/Coolant Flange (A4 ALH)

OEM Number: 038121121 Manufacturer Number: 18230

$6.95

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Thermostat housing for A4 chassis TDIs, (ALH). This housing gets brittle with age and often breaks when removing to access the thermostat. Includes o-ring.The bolts that secure this flange to the block are one use only. Replace when replacing or removing flange. ...

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 Thermostat Housing Bolts (2) (+$3.25)
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Thermostat [OEM](A4)(A3)(B4) Thermostat [OEM](A4)(A3)(B4)Thermostat for A3, A4 and B4 & B5 chassis cars. Includes the O-ring seal. You may also want to order Thermostat for A3, A4 and B4 & B5 chassis cars. Includes the O-ring seal. You may also want to order... $49.94

Thermostat housing for A4 chassis TDIs, (ALH). This housing gets brittle with age and often breaks when removing to access the thermostat. Includes o-ring.


The bolts that secure this flange to the block are one use only. Replace when replacing or removing flange.

For 2004-2005 Golf, Jetta and New Beetle TDI, the BEW flange is here.

Cross References and Supersessions:
038121121
Volkswagen
  • Golf TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003)
  • Jetta TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003)
  • Jetta Wagon TDI (A4 chassis) w/ ALH Engine (2002-2003)
  • New Beetle TDI (A4 chassis) w/ ALH Engine (1998-2003)

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