Lazy Thermostat
TL;DR yet another saga, for some reason Super boring long story short, the reference you're looking for is 17670-81AB1. Good luck finding one. With no reply to the enquiry I sent Caterham through their online form, I had to find the Suzuki part number for a Suzuki Every DA17 on eBay. As far as I known, my dealer was not able to get any information from official channels either. We got the thermostat out of the car at House of Speed and were able to confirm that what we saw did match the pictures from the listings : the offset piston, the looks of the mechanism and even all the markings on the flange were identical. On the Caterham 170, the thermostat is not located in the housing that's on the cylinder head (we checked, it's empty) , but in a remote housing near the oil filter, where the bottom hose of the radiator is attached (gotcha) . 17670-81AB1-000 is a 82°C thermostat with a 48mm diameter that, in Europe, is also used on the Suzuki V-Strom 800 mo...