Coolant Expansion Tank – 8A0121403A

The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic temperature changes on a regular basis, it can often crack or break. If your tank has experienced damage such as cracking, nipples breaking off, or mounting point damage, you will need to replace it.

This replacement will fit perfectly and provide the same heating and cooling characteristics as an original unit.

When replacing, be sure to have some extra coolant.

Includes internal level sensor.

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