Original VW accessories
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Electronic parts for Volkswagen Polo 6R.
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Brakes are a top priority when performing a maintenance service job
Brakes
Genuine suspension and steering parts for Volkswagen Polo 6R.
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Genuine tires and wheels for Volkswagen Polo 6R.
Tire and Wheel
Original interior parts for Volkswagen Polo 6R.
The interior parts of a car refer to the components and features within the cabin or passenger compartment.
Interior
Original exterior parts for Volkswagen Polo 6R.
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Experience a live performance in your Polo with car audio upgrades.
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Genuine heating, ventilation, and air conditioning parts for Volkswagen Polo 6R.
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Original air fuel delivery parts.
Air and Fuel Delivery
Engine parts for Volkswagen Polo 6R.
Engine
Genuine parts for transmission driveline of Volkswagen Polo 6R.
Transmission and Driveline
Original cooling parts for Volkswagen Polo 6R.
Cooling
Original exhaust parts for Volkswagen Polo 6R.
Exhaust
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Tools equipment for Volkswagen Polo 6R.
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Engine

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Coolant regulator

Coolant regulator
03C121110Q
03C.121.110.Q
03C-121-110-Q
03C 121 110 Q
Thermostat (coolant thermoregulator) for VW Polo 6R with 1.4 FSI (CLPA), 1.6 MPI (CLSA) and 1.6 MPI BiFuel (CNKA) engine.
Coolant regulator
03C121110AA
03C.121.110.AA
03C-121-110-AA
03C 121 110 AA
Thermostat (coolant thermoregulator) for VW Polo 6R with CNKA engine.
Coolant regulator
HENSCHEL
03C121110A
03C.121.110.A
03C-121-110-A
03C 121 110 A
Thermostat (coolant thermoregulator) for VW Polo 6R with 1.2 MPI (CGPA, CGPB) engine.
Coolant regulator
HIMMERMANN
032121110F
032.121.110.F
032-121-110-F
032 121 110 F
Thermostat (coolant thermoregulator) for VW Polo 6R with 1.4 MPI and 1.4 MPI BiFuel.
Coolant regulator
HENSCHEL
032121110B
032.121.110.B
032-121-110-B
032 121 110 B
Thermostat (coolant thermoregulator) for VW Polo 6R with 1.4 MPI and 1.4 MPI BiFuel.
Coolant regulator
03C121110L
03C.121.110.L
03C-121-110-L
03C 121 110 L
Thermostat (coolant thermoregulator) for VW Polo 6R GTI 1.4 TSI.
Coolant regulator
03C121110G
03C.121.110.G
03C-121-110-G
03C 121 110 G
Thermostat (coolant thermoregulator) for VW Polo 6R GTI 1.4 TSI.
Pipe union and coolant regulator
03L121114B
03L.121.114.B
03L-121-114-B
03L 121 114 B
Pipe uniot with the thermostat (coolant thermoregulator) for VW Polo 6R 1.6 TDI.
Coolant regulator housing with thermostat
03L121111AN
03L.121.111.AN
03L-121-111-AN
03L 121 111 AN
Thermostat housing with coolant thermoregulator for VW Polo 6R 1.6 TDI.
Replacement numbers
03L121111S
03L.121.111.S
03L-121-111-S
03L 121 111 S
>> 01.07.2022
Coolant regulator housing with thermostat
03P121111E
03P.121.111.E
03P-121-111-E
03P 121 111 E
Thermostat housing with coolant regulator for VW Polo 6R 1.2 TDI.
Coolant regulator
04E121113G
04E.121.113.G
04E-121-113-G
04E 121 113 G
Thermostat (coolant thermoregulator) for VW Polo 6R BlueGT 1.4 TSI.
Coolant regulator
06F121111H
06F.121.111.H
06F-121-111-H
06F 121 111 H
Thermostat (coolant thermoregulator) for VW Polo 6R 2.0 TSI.

A thermostat is a device that regulates the temperature of the engine coolant in the cooling system. Its main function is to maintain the optimal operating temperature for the engine. When the engine is cold, the thermostat closes, creating a closed-loop circulation of coolant, which helps the engine reach its operating temperature more quickly. Once that temperature is reached, the thermostat opens, allowing the coolant to circulate through the cooling system, helping to keep the engine at a constant temperature.

The thermostat consists of a housing with a valve and a temperature-sensing element. When the engine temperature is below the set threshold, the thermostat closes the valve, limiting the flow of coolant through the radiator. As the temperature rises, the thermostat opens the valve, allowing coolant to flow through the radiator and dissipate excess heat.

The operation of the thermostat is crucial for the efficient performance of the engine, as it helps maintain it at the proper temperature, influencing fuel combustion efficiency and overall engine component durability.