Expansion Tank
Expansion Tank
Section titled “Expansion Tank”The plastic expansion tank is one of the most common failure points. It develops hairline cracks that can lead to sudden coolant loss.
Part Number
Section titled “Part Number”17 13 7 543 003
Signs of Failure
Section titled “Signs of Failure”- White residue on or around tank
- Coolant smell
- Low coolant warning
- Visible hairline cracks
- Sudden overheating
Replacement Interval
Section titled “Replacement Interval”Every 60,000 miles or with cooling system overhaul. Replace proactively — the cost of the tank ($30-$50) is nothing compared to engine damage from overheating.