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Product overview

Genuine OEM Volkswagen Coolant Regulator Housing with Thermostat, part number 03L121111AC. This integrated assembly plays a critical role in the engine cooling system by housing the thermostat and regulating the flow of coolant. It ensures the engine reaches and maintains its optimal operating temperature. Weighing 0.295 kg, this housing is typically made from high-strength plastic or metal, designed to withstand thermal cycling and pressure. Using a genuine OEM housing with thermostat ensures precise temperature control, proper coolant routing, and long-term leak-free operation, essential for engine longevity.

Technical details

Category
Engine Cooling
Country of origin
Czech Republic
Customs (HS) code
90321080
Manufacturer
Volkswagen
Product Type
Genuine new auto parts
Shipping size (L × W × H)
14.5 × 12.5 × 11.5 cm
Shipping weight
0.3 kg

Parts diagram & fitment

22 vehicles

Housing — locate 03L121111AC Volkswagen Coolant Regulator Housing | Engine Cooling in the official exploded view and explore the surrounding assembly.

Superseded by 03L121111AF — the later replacement part.

This part is marked discontinued by the manufacturer; contact us to check current availability.

Parts in this assembly(5)
Compatible / alternative parts(5)

Diagrams & fitment data powered by oemdiagrams.com

03L121111AC Volkswagen Coolant Regulator Housing | Engine Cooling is fitted on: Jetta "USA"05> 2005-; JETTA 06> 2006-; Jetta Vagon 08> 2008-; TIGUAN 08> 2007-; Passat CC 2008-2012; golf 2.0 2008-2011; Golf Plus 1.6 2009-2011; Scirocco 2.0 2008-2014; EOS 2.0 2008-2010; passat estate 2008-2011; jetta 2008-2011; golf estate 2009-2013; jetta variant 2009-2014; jetta 2010-2014; new beetle 2011-2016; new beetle cabriolet 2011-2016; Golf 2011-2013; superb comfort 2008-2013; octavia ambiente 2008-2013; Yeti 2009-2013; Audi A3 Cab. 2.0 TDI 2007-2013; Audi A3 Sportback 2008-2013.