United States
Product overview
Genuine OEM Volkswagen Engine Thermostat, part number 03C121110L. This essential component precisely regulates the engine coolant temperature, allowing the engine to reach and maintain its optimal operating temperature for efficiency and reduced emissions. The thermostat includes the main wax-pellet and spring mechanism along with a separate sealing O-ring. Weighing 0.087 kg, this part is engineered for accurate temperature response. Choosing a genuine OEM thermostat ensures precise calibration and reliable operation, which is critical for preventing engine overheating or undercooling and maintaining fuel economy.
Catalogue entry: COOLANT RG 80C-95C.
Technical details
- Category
- Engine Cooling
- Country of origin
- Germany
- Customs (HS) code
- 90321080
- Manufacturer
- Volkswagen
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 8.7 × 5.5 × 3.4 cm
- Shipping weight
- 0.09 kg
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
46 vehiclesCoolant Regulator — locate 03C121110L Volkswagen Engine Thermostat | Coolant Regulator in the official exploded view and explore the surrounding assembly.
Parts in this assembly48
- 1Housing 032121111BM
- 1Housing 03C121111G
- 1Housing 03C121111P
- 1Housing 03C121111H
- 2Cover 032121121K
- 2Cover 03C121121D
- 2Cover 03C121121C
- 3Seal Ring 032121119J
- 3Seal Ring 03C121119C
- 4Coolant Rg 032121110B
- 4Coolant Rg 03C121110A
- 5Screw N10611201
- 5Screw N90629803
- 5Bolt N10473401
- 8Cover 03C121118D
- 8Cover 03C121118C
- 9Seal Ring 03C121119
- 10Coolant Rg 03C121110G
- 10Coolant Rg 03C121110F
- 12Bungs 357121140
- 12Sender 06A919501A
- 13Seal Ring N90316801
- 14Spring 032121142
- 17Seal 03C121119E
- 18Bolt N91097101
- 18Bolt N91097001
- 20Tank 1K0121407A
- 21Cover 3B0121321
- 22Seal Ring 1H0121687A
- 23Screw N90846602
- 24Part 811807577C
- 25Coolant G013A8JM8
- 25Coolant G013A8JM9
- 25Coolant G013A8JM1
- 30Part 1K0121251BR
- 30Radiator 1K0121251DN
- 30Radiator 1K0121251L
- 31Seal 1K0121345A
- 31Seal 1K0121345C
- 31Seal 1K0121345Q
- 31Seal 1K0121345
- 32Seal 1K0121345H
- 32Seal 1K0121345G
- 33Bracket 1K0121367G
- 33Bracket Mt 1K0121367M
- 33Bracket Mt 1K0121367N
- 34Bolt N90808201
- 35Bush 1K0121367F
Vehicle fitment table46
Europe (44)
| Vehicle | Years | Pos. | Qty | Remark | PR |
|---|---|---|---|---|---|
| Beetle | 2016-2019 | 4 | 1 | ||
| new beetle cabriolet | 2016-2019 | 4 | 1 | ||
| Jetta 1.6 | 2014-2018 | 4 | 1 | ||
| Scirocco 2.0 | 2014-2017 | 4 | 1 | ||
| jetta | 2014-2017 | 4 | 1 | ||
| Jetta 1.4 | 2013-2015 | 4 | 1 | ||
| jetta | 2013-2014 | 4 | 1 | ||
| Polo | 2012-2014 | 4 | 1 | ||
| Ibiza Reference | 2012-2012 | 4 | 1 | TF0 | |
| Tiguan 4Motion | 2011-2018 | 4 | 1 | TF0 | |
| new beetle | 2011-2016 | 4 | 1 | ||
| new beetle cabriolet | 2011-2016 | 4 | 1 | ||
| Golf Cabriolet | 2011-2016 | 4 | 1 | TF0 | |
| Passat CC | 2011-2016 | 4 | 1 | ||
| Golf Plus | 2011-2014 | 4 | 1 | CAVD,CNWA, | CT |
| Golf | 2011-2013 | 4 | 1 | CAVD,CNWA, | CT |
| Ibiza Reference | 2011-2012 | 4 | 1 | TF0 | |
| Sharan Blue Motion | 2010-2015 | 8 | 1 | ||
| Touran 2.0 | 2010-2015 | 4 | 1 | ||
| Passat saloon | 2010-2015 | 4 | 1 | TQ3 | |
| Eos BlueMotion | 2010-2015 | 4 | 1 | TF0 | |
| Audi A1 Sportback | 2010-2015 | 4 | 1 | TF0 | |
| jetta | 2010-2014 | 4 | 1 | ||
| Fabia Scout | 2010-2014 | 4 | 1 | ||
| Alhambra Stylance | 2010-2013 | 8 | 1 | TF0 | |
| golf estate | 2009-2013 | 4 | 1 | ||
| Polo | 2009-2012 | 4 | 1 | ||
| Golf Plus 1.6 | 2009-2011 | 4 | 1 | CAVD,CNWA | TF0 |
| Scirocco 2.0 | 2008-2014 | 4 | 1 | TF0 | |
| Passat CC | 2008-2012 | 4 | 1 | TU1 | |
| golf 2.0 | 2008-2011 | 4 | 1 | CAVD,CNWA | TF0 |
| passat estate | 2008-2011 | 4 | 1 | CDGA | TQ3 |
| jetta | 2008-2011 | 4 | 1 | ||
| Ibiza Reference | 2008-2011 | 4 | 1 | TF0 | |
| EOS 2.0 | 2008-2010 | 4 | 1 | TF0 | |
| Touran 1.9 | 2008-2010 | 4 | 1 | ||
| GOLF VARIANT 07> | 2007- | 4 | 1 | TF0 | |
| GOLF PLUS 08> | 2007- | 4 | 1 | BLG,BMY, | |
| TIGUAN 08> | 2007- | 4 | 1 | TF0 | |
| JETTA 06> | 2006- | 4 | 1 | BLG,BMY | D4P |
| TOURAN | 2006- | 4 | 1 | BMY,BLG | D4P |
| GOLF PLUS 05> | 2005- | 4 | 1 | BLG,BMY | TF0 |
| JETTA 06> | 2005- | 4 | 1 | ||
| TOURAN | 2005-2006 | 4 | 1 | BMY | D4R |
Other markets (2)
| Vehicle | Years | Pos. | Qty | Remark | PR |
|---|---|---|---|---|---|
| Golf/Rabbit 08> | 2007- | 4 | 1 | BLG,BMY | D4P |
| Golf/Rabbit | 2005-2007 | 4 | 1 | BLG,BMY | D4P |
Diagrams & fitment data powered by oemdiagrams.com
03C121110L Volkswagen Engine Thermostat | Coolant Regulator is fitted on: Beetle 2016-2019; new beetle cabriolet 2016-2019; Jetta 1.6 2014-2018; Scirocco 2.0 2014-2017; jetta 2014-2017; Jetta 1.4 2013-2015; jetta 2013-2014; Polo 2012-2014; Ibiza Reference 2012-2012; Tiguan 4Motion 2011-2018; new beetle 2011-2016; new beetle cabriolet 2011-2016; Golf Cabriolet 2011-2016; Passat CC 2011-2016; Golf Plus 2011-2014; Golf 2011-2013; Ibiza Reference 2011-2012; Sharan Blue Motion 2010-2015; Touran 2.0 2010-2015; Passat saloon 2010-2015; Eos BlueMotion 2010-2015; Audi A1 Sportback 2010-2015; jetta 2010-2014; Fabia Scout 2010-2014; Alhambra Stylance 2010-2013; golf estate 2009-2013; Polo 2009-2012; Golf Plus 1.6 2009-2011; Scirocco 2.0 2008-2014; Passat CC 2008-2012; golf 2.0 2008-2011; passat estate 2008-2011; jetta 2008-2011; Ibiza Reference 2008-2011; EOS 2.0 2008-2010; Touran 1.9 2008-2010; GOLF VARIANT 07> 2007-; GOLF PLUS 08> 2007-; TIGUAN 08> 2007-; JETTA 06> 2006-; TOURAN 2006-; GOLF PLUS 05> 2005-; JETTA 06> 2005-; TOURAN 2005-2006; Golf/Rabbit 08> 2007-; Golf/Rabbit 2005-2007.
