United States
Target · Diagram
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Number 1 marks the part’s position in the exploded view.
Product overview
Genuine OEM Audi Coolant Regulator Housing, part number 03C121111H. This essential component is part of the engine cooling system, specifically designed to house the thermostat. Its primary function is to regulate the flow of engine coolant, ensuring the engine operates within its optimal temperature range. Weighing 0.66 kg and measuring 0.2 m in length, this housing is engineered for precise fitment and reliable performance. Opting for a genuine OEM coolant regulator housing ensures proper sealing, material integrity, and accurate temperature regulation, which are crucial for preventing engine overheating and maintaining long-term engine health.
Technical details
- Category
- Engine Cooling
- Country of origin
- Czech Republic
- Customs (HS) code
- 90321080
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 20 × 17 × 10 cm
- Shipping weight
- 0.66 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
16 vehiclesCoolant Regulator Housing — locate 03C121111H Audi Coolant Regulator Housing | Engine Cooling in the official exploded view and explore the surrounding assembly.
Parts in this assembly30
- 2Cover 03C121121C
- 3Seal Ring 03C121119C
- 4Coolant Rg 03C121110A
- 5Bolt N10473401
- 8Cover 03C121118C
- 9Seal Ring 03C121119
- 10Coolant Rg 03C121110F
- 12Sender 06A919501A
- 13Seal Ring N90316801
- 14Spring 032121142
- 17Seal 03C121119E
- 18Screw N10580101
- 20Tank 1K0121407A
- 21Cover 3B0121321
- 22Seal Ring 1H0121687A
- 23Screw N90846602
- 24Part 811807577C
- 25Cool Add G012A8FM1
- 25Cool Add G012A8FM8
- 30Radiator 1K0121251CJ
- 30Radiator 1K0121251P
- 31Seal 1K0121345A
- 31Seal 1K0121345
- 32Seal 1K0121345H
- 32Seal 1K0121345J
- 32Seal 1K0121345G
- 33Bracket 1K0121367C
- 33Bracket 1K0121367B
- 34Bolt N90808201
- 35Bush 1K0121367F
Vehicle fitment table16
Europe (14)
| Vehicle | Years | Pos. | Qty | Remark | PR |
|---|---|---|---|---|---|
| passat estate | 2008-2011 | 1 | 1 | T72 | |
| GOLF PLUS 08> | 2007- | 1 | 1 | BLF | T72 |
| Passat/4Motion 08 | 2007- | 1 | 1 | T72 | |
| Audi A3/S3/Sportb./qu. 08 | 2007- | 1 | 1 | T72 | |
| EOS-Cabriolet-Coupe | 2006- | 1 | 1 | D4K | |
| TOURAN | 2006- | 1 | 1 | BLF | D4K |
| GOLF PLUS 05> | 2005- | 1 | 1 | BLF | T72 |
| JETTA 06> | 2005- | 1 | 1 | D4K | |
| Passat/4Motion | 2005-2007 | 1 | 1 | T72 | |
| Audi A3/S3/quattro | 2005-2007 | 1 | |||
| TOURAN | 2005-2006 | 1 | 1 | BLF | D4K |
| OCTAVIA/COMBI/4X4 04> | 2004- | 1 | 1 | BLF | D4K |
| TOURAN | 2003-2005 | 1 | 1 | ||
| GOLF | 2003-2005 | 1 | 1 |
Other markets (2)
| Vehicle | Years | Pos. | Qty | Remark | PR |
|---|---|---|---|---|---|
| Golf/Rabbit 08> | 2007- | 1 | 1 | BLF | D4K |
| Golf/Rabbit | 2005-2007 | 1 | 1 | BLF | D4K |
Diagrams & fitment data powered by oemdiagrams.com
03C121111H Audi Coolant Regulator Housing | Engine Cooling is fitted on: passat estate 2008-2011; GOLF PLUS 08> 2007-; Passat/4Motion 08 2007-; Audi A3/S3/Sportb./qu. 08 2007-; EOS-Cabriolet-Coupe 2006-; TOURAN 2006-; GOLF PLUS 05> 2005-; JETTA 06> 2005-; Passat/4Motion 2005-2007; Audi A3/S3/quattro 2005-2007; TOURAN 2005-2006; OCTAVIA/COMBI/4X4 04> 2004-; TOURAN 2003-2005; GOLF 2003-2005; Golf/Rabbit 08> 2007-; Golf/Rabbit 2005-2007.
