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Coolant Pressure Test Kit - Buyers guide

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Cayenne 2003 4.5S

I needed to pressure test my coolant system to identify a leak that, when hot, could be smelt but not seen & when cold didn't leak!

I wanted to buy a Coolant Pressure Test Kit but was not sure which one to buy. During my research, I noticed there was one type of generic non-branded 'universal' kit that appeared multiple times on the general market (eBay & Amazon for instance).. Most listing for this generic kit listed all the car types it would fit but of course, Porsche was not listed - however, a few VAG applications were listed so I took a punt & ordered one of these kits for UK £45.00.

The good news is that one of the VAG adapters supplied (#9) fits the Cayenne the header tank & I was able to perform the test on my cold engine & immediately, the leak was apparent.

The purpose of my ramblings here is to share with you the kit I bought & the adapter used so you don't have to guess & take a chance as I did.

I hope this helps someone.


BTW, finally my luck ran out - it was my original plastic coolant pipes that gave up the ghost (there can't be many 2003 models out there still running their original plastic pipes)





Edited by Dr Pepper
Removal of duplicate image
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  • 2 weeks later...

Rather than providing an item number which, over time, will go obsolete, I suggest searching eBay, Amazon, etc using the a combination of the following key words:

Universal Radiator Cooling System Pressure Test Tester Kit

Using a combination of these words & my photos for comparison, you'll soon find what you're looking for.


As I say. this kit appears to be non-branded & sold by many outlets - expect to pay between UK £40 ~ £60.

Watch carefully where it being shipped from - especially if you need it within a few days!


Edited by Dr Pepper
typo correction
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