Mk4 Volkswagen Golf GTI Coolant Reservoir Replacement DIY (1998-2006 VW Beetle, Jetta, Golf)

►The Mk4 VW Golf GTI coolant reservoir is like any other coolant reservoir in that over time, the plastic ages and degrades due to heat. Look inside any older car's engine bay, and you're likely to see an aged yellow coolant reservoir.

If your coolant reservoir is yellowed like the one shown in this video, you should, at the minimum, inspect it. As the plastic ages, it becomes brittle and prone to cracks. Due to the pressure these are under, they are especially prone to cracking as they get up there in age. Failure of the reservoir will mean loss of coolant, air in your system, and the potential for your engine to overheat.

In this DIY, Jay Van Gorden demonstrates how to replace the coolant reservoir on Jamie Orr's Mk4 Golf GTI. However, this DIY applies to any Mk4 chassis Volkswagen.

0:00 - How To Replace the Coolant Reservoir on Mk4 GTI
0:34 - Tools Needed
0:42 - Drain Out the Existing Coolant
1:46 - Remove Cooling Hoses and Sensors
2:30- Pull out Old Reservoir and Swap Out for New One
2:50 - Install New Coolant Reservoir
3:32 - Refill The Cooling System
5:30 - Outro

Shop the parts used in this video:
VW Mk4 GTI Coolant Reservoir: https://www.fcpeuro.com/products/audi...

VW MK4 GTI Coolant Reservoir Cap: https://www.fcpeuro.com/products/audi...

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