![anybody know what this is? I'm losing coolant, can't find a leak but this is hissing while motor is running. : r/MINI anybody know what this is? I'm losing coolant, can't find a leak but this is hissing while motor is running. : r/MINI](https://i.redd.it/vm5f81dkd1ha1.jpg)
anybody know what this is? I'm losing coolant, can't find a leak but this is hissing while motor is running. : r/MINI
![13621486698 MINI Cooper Sensor Coolant Water Temperature Sensor 13621486698 - MINI Cooper Accessories + MINI Cooper Parts 13621486698 MINI Cooper Sensor Coolant Water Temperature Sensor 13621486698 - MINI Cooper Accessories + MINI Cooper Parts](https://www.outmotoring.com/images/magictoolbox_cache/e8d7375365b05e64a6e04a1a156cfb7a/1/2/126160/original/2651733439/MIN_sensor_13621486698_md.jpg)
13621486698 MINI Cooper Sensor Coolant Water Temperature Sensor 13621486698 - MINI Cooper Accessories + MINI Cooper Parts
![MINI Cooper R56 Draining and Filling Cooling System (2007-2011) | Pelican Parts DIY Maintenance Article MINI Cooper R56 Draining and Filling Cooling System (2007-2011) | Pelican Parts DIY Maintenance Article](https://cdn4.pelicanparts.com/techarticles/MINI_R56/56-WATER-Draining_Filling_Cooling_System/images_large/pic01.jpg)
MINI Cooper R56 Draining and Filling Cooling System (2007-2011) | Pelican Parts DIY Maintenance Article
![11538674895 Engine Coolant Thermostat Housing Assembly for Mini Cooper Paceman 2013-2016 for Mini Cooper Countryman - Walmart.com 11538674895 Engine Coolant Thermostat Housing Assembly for Mini Cooper Paceman 2013-2016 for Mini Cooper Countryman - Walmart.com](https://i5.walmartimages.com/seo/11538674895-Engine-Coolant-Thermostat-Housing-Assembly-for-Mini-Cooper-Paceman-2013-2016-for-Mini-Cooper-Countryman_c0098c66-7134-4d77-8123-7106fbd489c7.8b81c02774c0e09f0c23c5f4122830a3.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
11538674895 Engine Coolant Thermostat Housing Assembly for Mini Cooper Paceman 2013-2016 for Mini Cooper Countryman - Walmart.com
![Amazon.com: A-Premium Engine Coolant Overflow Recovery Reservoir Tank [with Cap] Compatible with BMW 118i, 318i, i3 2014-2019, i3s, i8 14-19 & Mini Cooper 07-15, Cooper Countryman 11-16, Replace # 17137539267 : Automotive Amazon.com: A-Premium Engine Coolant Overflow Recovery Reservoir Tank [with Cap] Compatible with BMW 118i, 318i, i3 2014-2019, i3s, i8 14-19 & Mini Cooper 07-15, Cooper Countryman 11-16, Replace # 17137539267 : Automotive](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/71I0wr421EL._AC_UF350,350_QL80_.jpg)
Amazon.com: A-Premium Engine Coolant Overflow Recovery Reservoir Tank [with Cap] Compatible with BMW 118i, 318i, i3 2014-2019, i3s, i8 14-19 & Mini Cooper 07-15, Cooper Countryman 11-16, Replace # 17137539267 : Automotive
![LEZENPART 11538674895 11537647305 11537647751 11538671513 Car Engine Coolant Thermostat for MINI R55 R57 R58 R59 R60 R61 Cooper - AliExpress LEZENPART 11538674895 11537647305 11537647751 11538671513 Car Engine Coolant Thermostat for MINI R55 R57 R58 R59 R60 R61 Cooper - AliExpress](https://ae01.alicdn.com/kf/Sfd906cf082634a258cfd6b2b80e5d9f1k.jpg_640x640Q90.jpg_.webp)
LEZENPART 11538674895 11537647305 11537647751 11538671513 Car Engine Coolant Thermostat for MINI R55 R57 R58 R59 R60 R61 Cooper - AliExpress
![MINI Cooper R56 Coolant Expansion Tank Replacement (2007-2011) | Pelican Parts DIY Maintenance Article MINI Cooper R56 Coolant Expansion Tank Replacement (2007-2011) | Pelican Parts DIY Maintenance Article](https://cdn4.pelicanparts.com/techarticles/MINI_R56/55-WATER-Coolant_Expansion_Tank_Replacement/images_large/pic01.jpg)