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11 New Products more
Front Wheel Bearing Kit [Optimal] (B5.5)
Front Wheel Bearing Kit [Optimal] (B5.5)
$49.95
$39.95
11 Specials more
Front Wheel Bearing Kit [Optimal] (A3)(B4)
Front Wheel Bearing Kit [Optimal] (A3)(B4)
$32.95
$24.95
Thermostat Housing/Coolant Flange (A4 ALH)
[a4therhsng]
$6.95
OE Part Number: 038121121
Manufacturer's Part Number: 18230

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.

Available Options:
Hardware - Thermostat Housing Bolts (2): (+$3.25) 
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 Other items that you may need below. When you click 'Add To Cart' everything you selected will be put in the cart together.
    Name+   Description   Price   Select 
 Thermostat (A4)(A3)(B4)(B5.5)   Thermostat (A4)(A3)(B4)(B5.5)   Thermostat for A4, A3 chassis cars and B4 and B5.5 Passat TDI. Includes the O-ring seal. You may also want to order...   $18.95 
 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 the thermostat...   $49.95 
Displaying 1 to 2 (of 2 products) Result Pages:  1 
11 This product fits the following vehicles 11
Volkswagen
  • Golf TDI MkIV (A4 chassis) w/ ALH engine (1999-2003)
  • Jetta TDI MkIV (A4 chassis) w/ ALH engine (1999-2003)
  • New Beetle TDI (A4 chassis) w/ ALH engine (1998-2003)
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11 Manufacturer Info
Febi
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