The Valtra T 190 from the T series is well served here: more than 140 parts, with trailer couplings, electrics and lighting as the key groups.
The T 190 tends to do the heavy pulling on a farm, so an engine that runs hot or a boost leak between turbo and intercooler shows up quickly. This page lists more than 140 parts that fit the Valtra T 190, from GRANIT, Scharmüller, Walterscheid, DANA Spicer and GRAMMER.
On the cooling side there are thermostats with their gaskets. For the charge air system you will find hose elbows for the intercooler. Around the engine there is a valve cover gasket for the Sisu engine, O-rings for the feed pump, seals for the lubrication line, seal kits and engine sensors.
In and around the cab:
Never refit a thermostat on its old gasket. The used gasket has been compressed and has hardened, and it often weeps once the housing is bolted back down. Clean both mating faces, fit the new thermostat with a new gasket and bleed the cooling system carefully after topping up. An air pocket trapped at the thermostat can stop it opening on time, which looks just like a faulty part. While you are working there, flex the intercooler hose elbows and check the bends for cracks or an oily film.
If the indicators suddenly flash much faster than usual, check for a blown bulb on that side before replacing the flasher unit.
A stiff door lock often only needs cleaning and a little lubricant. Replace it once the latch no longer catches reliably.
Your T 190 carries its serial number on the type plate, which is the first thing to have at hand if you want to check fitment. For hoses, gaskets and thermostats, the number on the old part is often the fastest way to a match. Thermostats usually have the diameter and opening temperature stamped on the rim.
The T 190 is part of the T series. Each of these models has a page of its own, so every tractor on the farm gets its own list of fitting parts:
For older Valmet tractors and the other ranges, start from the page with all Valtra parts.