Engine radiator OEM Volkswagen or Denso

Denso and Koyorad are good brands.

I remember when my First Radiator blew up at 20108 miles, just out of warranty, and the Dealer ship was going to sell me another Plastic/Aluminum one for the mark down price of 120 bucks. I found a radiator shop that got me a Brass and Copper one for 108. It lasted for the next 19 years with out failure.

I also replaced the radiator (I went Denso, not oem). It\u2019s gxor-ish recommended preventative maintenance every 100k.

I spent two years (off and on, as it only overheated when idling in 90+ degree conditions or when doing low-speed jeep trail climbing in the heat) chasing this on my rig. Over time, replaced fluid, thermostat, radiator cap, clutch fan. No joy. Finally pulled the radiator, and the front fins were horribly blocked. Replaced with a new Denso, and problem solved. Only issue with the new Denso was that the mounting rails on the new radiator were shite, but it was a matter of four bolts to swap over the old rails (with upper shroud still attached) to the new radiator.

Ive own both Mk6 1.8T Jetta and now have a Mk5 2.5L Jetta and both have required new radiators at 150k miles. they have not been leaking coolant since.

Awesome, I'm calling the dealer today to get a radiator, heater core and thermostat.

I had a similar issue with my Mk4 VR6 Golf, coolant level would drop a tiny bit over time with no obvious sign of leakage..turned out to be a very small leak at the bottom corner seam of the radiator.

Replaced radiator. Flushed out nasty brown water from cooling lines, heater core and flushed with distilled water 3 times. Pulled vacuum on cooling System and Refilled with G13 premix.

The radiator on my 2016 is leaking, although leak isn't really the right word. Maybe porous. The hole is so small, it takes months to show a change in the coolant reservoir. On some days, given proper conditions, a small wisp of steam is visible coming from the radiator area. I added a UV dye to the cooling system, and it is visible then.

I did replace one with oem and fail in less than a month denso brand