Radiator Coolant expansion tank, also known as a coolant reservoir.
Alternate Part #s
1J0121403B
1J0121407F
For all Mk4 chassis cars including Beetle, Golf, Jetta, ALH and BEW
This product fits the following cars:
1998 -2006 Beetle
1999.5- 2005 Jetta
1999.5- 2006 Golf