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Product overview

Genuine OEM Volkswagen Thermostat Housing, part number 03C121121C. This component is crucial for the engine cooling system, as it encloses and protects the engine's thermostat, regulating coolant flow. It is typically located on the engine block or cylinder head, connecting to coolant hoses. Made from durable plastic, it weighs 0.056 kg and measures approximately 0.103m in length. Choosing genuine OEM ensures the housing maintains proper sealing and withstands engine temperatures and pressures for reliable cooling system operation.

Catalogue entry: COVER.

Fitted with: 03C121119C SEAL. RING, N10611201 SCREW, 03C121110A COOLANT RG.

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)
10.3 × 9 × 5.3 cm
Shipping weight
0.06 kg

Specifications

As recorded in the manufacturer’s parts catalogue for this part number.

Equipment codes

  • T70

PR codes identify the factory option a part belongs to; your vehicle’s are listed on the data sticker in the boot well or service booklet.

Why buy from WW Spares?

  • ✓ Genuine OEM inventory sourced directly from factory networks
  • ✓ Fitment support from workshop-seasoned parts specialists
  • ✓ Global logistics with customs-ready documentation

Need help confirming compatibility? Talk to a specialist

Parts diagram & fitment

43 vehicles

Cover For Thermostat — locate 03C121121C Volkswagen Thermostat Housing | Engine Cooling in the official exploded view and explore the surrounding assembly.

Parts in this assembly9
Compatible / alternative parts(4)
Vehicle fitment table43

Europe (37)

VehicleYearsPos.QtyRemarkPR
Rapid2012-2022271
Toledo Reference2012-201521T70
Polo2012-201421T70
Ibiza Reference2012-201221T70
Ibiza Reference2011-201221T70
Roomster2010-2015271
Fabia Scout2010-2014271
Polo2009-201421T70
Fabia Ambiente2009-20132, 271T70
Polo2009-201221T70
passat estate2008-201121T72
Ibiza Reference2008-201127, 21
Polo2008-2009191T70
GOLF PLUS 08>2007-21BLFT72
Passat/4Motion 082007-21T72
Audi A3/S3/Sportb./qu. 082007-21T72
EOS-Cabriolet-Coupe2006-21D4K
TOURAN2006-21BLFD4K
ROOMSTER 06>2006-271
FABIA/COMBI NF 07>2006-271
FOX M.05>2005-191
GOLF PLUS 05>2005-21BLFT72
POLO2005-191
JETTA 06>2005-21D4K
IBIZA 06>2005-27, 191
CORDOBA 06>2005-191
Passat/4Motion2005-200721T72
Audi A3/S3/quattro2005-200721T72
TOURAN2005-200621BLFD4K
OCTAVIA/COMBI/4X4 04>2004-21BLFD4K
FABIA/COMBI 05>2004-271
TOURAN2003-200521BAG,BLP,BLFD4K
GOLF2003-200521BKG,BAG,BLP,
CORDOBA/SE2412002-2005191
POLO2001-2005191
IBIZA2001-2005191
FABIA/COMBI1999-2004271

Other markets (5)

VehicleYearsPos.QtyRemarkPR
Ameo 1,02016-202021
Polo2014-202221
Golf/Rabbit 08>2007-21BLFD4K
POLO CLASSIC "ZA"05>2005-191
Golf/Rabbit2005-200721BLN,BLFD4K

Platform / generic diagrams (1)

VehicleYearsPos.QtyRemarkPR
06A platform21

Diagrams & fitment data powered by oemdiagrams.com

03C121121C Volkswagen Thermostat Housing | Engine Cooling is fitted on: Rapid 2012-2022; Toledo Reference 2012-2015; Polo 2012-2014; Ibiza Reference 2012-2012; Ibiza Reference 2011-2012; Roomster 2010-2015; Fabia Scout 2010-2014; Polo 2009-2014; Fabia Ambiente 2009-2013; Polo 2009-2012; passat estate 2008-2011; Ibiza Reference 2008-2011; Polo 2008-2009; GOLF PLUS 08> 2007-; Passat/4Motion 08 2007-; Audi A3/S3/Sportb./qu. 08 2007-; EOS-Cabriolet-Coupe 2006-; TOURAN 2006-; ROOMSTER 06> 2006-; FABIA/COMBI NF 07> 2006-; FOX M.05> 2005-; GOLF PLUS 05> 2005-; POLO 2005-; JETTA 06> 2005-; IBIZA 06> 2005-; CORDOBA 06> 2005-; Passat/4Motion 2005-2007; Audi A3/S3/quattro 2005-2007; TOURAN 2005-2006; OCTAVIA/COMBI/4X4 04> 2004-; FABIA/COMBI 05> 2004-; TOURAN 2003-2005; GOLF 2003-2005; CORDOBA/SE241 2002-2005; POLO 2001-2005; IBIZA 2001-2005; FABIA/COMBI 1999-2004; Ameo 1,0 2016-2020; Polo 2014-2022; Golf/Rabbit 08> 2007-; POLO CLASSIC "ZA"05> 2005-; Golf/Rabbit 2005-2007; 06A platform.