Description
This premium engine coolant regulator and thermostat housing assembly is manufactured to strict factory original equipment standards to manage thermal conditions within the engine core. Constructed from high-strength thermal-stable composite plastic, the integrated unit replaces the complete factory configuration, housing the dual-stage thermostat valve and precision sealing rings. It dynamically governs block-to-radiator tracking to warm the engine block quickly and avoid local hot spots under load. Replacing a brittle, leaking, or sticking factory housing prevents constant coolant loss, cabin heating failures, and catastrophic engine head warping from thermal overheating.
Compatible Vehicles
Volkswagen Polo 1.2 TSI (6R / 6C Platforms, 2009–2022)
Volkswagen Golf Mk6 / Mk7 1.2 TSI (2008–2016)
Volkswagen Caddy 1.2 TSI (2010–2015)
Volkswagen Jetta 1.2 TSI (2010–2018)
Volkswagen Beetle 1.2 TSI (2011–2019)
Volkswagen Touran 1.2 TSI (2010–2015)
Audi A1 1.2 TFSI (2010–2018)
Audi A3 1.2 TFSI (2010–2013)
Application Note: Specifically engineered for Volkswagen Audi Group passenger models powered by the 4-cylinder 8-valve 1.2 TSI / TFSI petrol engine family (Engine codes: CBZB, CBZC). This unit includes the pre-fitted primary internal regulator component. Always clean the aluminum mounting mating surface on the engine block thoroughly to guarantee a leak-free seal during installation.
Specifications
Part Type: Engine Cooling System Thermostat Housing & Dual Regulator Assembly
Operation Mode: Thermal Element Expansion Actuated Layout
Position: Engine Block Outlet / Primary Coolant Bypass Line Feed Loop
OEM Reference No: 03F121111A / 03F 121 111 A / 03F 121 111A
Cross-Reference OEM Nos: 03F121111F / 03F121111B
Alternative Part Numbers: TH49380/89 / 7.8773 / 171228 / 11211826901 / 11211888101 / 350588A / VNTS015
Thermostat Opening Temperature: 80°C Primary Stage / 89°C Full Bypass Open Stage
Housing Material Composition: Premium PA66-GF30 Reinforced Polyamide Composite
Supplementary Inclusion: Pre-Installed Internal Thermostat Assembly, Integrated Thermal Sensor Port, Moulded Base Profiling Rubber O-Ring Gasket
Fast and reliable delivery available across South Africa.
