United States
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Number 21 marks the part’s position in the exploded view.
Product overview
Genuine OEM Audi Exhaust Gas Cooler Coolant Hose, part number 3C0121157AB. This specialized hose is responsible for circulating coolant to and from the exhaust gas cooler, playing a critical role in managing exhaust temperatures and supporting the emissions control system. Its specific bent shape ensures correct routing within the engine bay. Constructed from robust, heat-resistant black rubber, it weighs 0.053 kg and measures approximately 0.13 meters in length. Using a genuine OEM hose guarantees the precise fit, material integrity, and resistance to thermal stress required for the demanding environment of the exhaust gas cooling system.
Technical details
- Category
- Engine Cooling
- Country of origin
- Hungary
- Customs (HS) code
- 40093100
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 13 × 7 × 3.5 cm
- Shipping weight
- 0.05 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
24 vehiclesCoolant Hose — locate 3C0121157AB Audi Exhaust Gas Cooler Coolant Hose | OEM in the official exploded view and explore the surrounding assembly.
Parts in this assembly46
- 1Hose 2K0122051
- 1Hose 2K0122051A
- 1Hose 3C0122051BK
- 2Coupl Piece 2K0122291
- 2Coupl Piece 3B0122291C
- 2Coupl Piece 7M3122291B
- 3Seal Ring N90765301
- 4Spring 1J0121142
- 5Bracket 3C0121093
- 6Hose 1K0121086T
- 6Hose 1K0121086AB
- 7Hose 1K0121058BF
- 7Hose 3C0121058AC
- 8Hose 1K0121086AD
- 10Water Pipe 03G121065AA
- 10Water Pipe 03G121065AC
- 11Seal Ring 06B121687
- 12Screw N90588202
- 13Bolt N0102279
- 15Coupl Piece 1K0122291BA
- 16Hose 1K0121101CE
- 16Hose 1K0121101CG
- 16Hose 1K0121101CF
- 16Hose 1K0121101CD
- 17Hose 1K0121447CM
- 17Hose 1K0121447CQ
- 18Hose 1K0122447ED
- 19Tpiece N90693001
- 20Hose 3C0121157AA
- 22Coupl Piece 1K0122291H
- 23Coupl Piece 1K0122291J
- 24Hose 1T0122157CA
- 24Hose 1T0122157CJ
- 24Hose 2K0122157AE
- 24Hose 2K0122157AH
- 26Part 03G121151AF
- 27Part N10403203
- 27Part N10524202
- 30Hose 3C0121447L
- 32Hose 3C0122109E
- 32Hose 1K0122109BB
- 33Bracket 1K0121093AQ
- 50Clamp N90686701
- 51Clamp N90686901
- 52Clamp N90687001
- 54Clamp N90687201
Compatible / alternative parts(1)
Vehicle fitment table24
Europe (22)
| Vehicle | Years | Pos. |
|---|---|---|
| superb comfort | 2008-2013 | 20, 33 |
| octavia ambiente | 2008-2013 | 21, 33 |
| Audi A3 Sportback | 2008-2013 | 21 |
| passat estate | 2008-2011 | 21, 33 |
| jetta | 2008-2011 | 21 |
| caddy panel van | 2008-2010 | 21, 33 |
| Touran 1.9 | 2008-2010 | 21, 33 |
| GOLF VARIANT 07> | 2007- | 21, 33 |
| GOLF PLUS 08> | 2007- | 21, 33 |
| Passat/4Motion 08 | 2007- | 21, 33 |
| Audi A3/S3/Sportb./qu. 08 | 2007- | 21 |
| EOS-Cabriolet-Coupe | 2006- | 33 |
| JETTA 06> | 2006- | 21, 33 |
| TOURAN | 2006- | 21, 33 |
| GOLF PLUS 05> | 2005- | 21, 33 |
| JETTA 06> | 2005- | 21, 33 |
| Passat/4Motion | 2005-2007 | 21, 33 |
| Audi A3/S3/quattro | 2005-2007 | 21 |
| TOURAN | 2005-2006 | 21, 33 |
| CADDY | 2004- | 21, 33 |
| OCTAVIA/COMBI/4X4 04> | 2004- | 21, 33 |
| GOLF | 2003-2005 | 33 |
Other markets (2)
| Vehicle | Years | Pos. |
|---|---|---|
| Golf/Rabbit 08> | 2007- | 21, 33 |
| Golf/Rabbit | 2005-2007 | 21, 33 |
Diagrams & fitment data powered by oemdiagrams.com
3C0121157AB Audi Exhaust Gas Cooler Coolant Hose | OEM is fitted on: superb comfort 2008-2013; octavia ambiente 2008-2013; Audi A3 Sportback 2008-2013; passat estate 2008-2011; jetta 2008-2011; caddy panel van 2008-2010; Touran 1.9 2008-2010; GOLF VARIANT 07> 2007-; GOLF PLUS 08> 2007-; Passat/4Motion 08 2007-; Audi A3/S3/Sportb./qu. 08 2007-; EOS-Cabriolet-Coupe 2006-; JETTA 06> 2006-; TOURAN 2006-; GOLF PLUS 05> 2005-; JETTA 06> 2005-; Passat/4Motion 2005-2007; Audi A3/S3/quattro 2005-2007; TOURAN 2005-2006; CADDY 2004-; OCTAVIA/COMBI/4X4 04> 2004-; GOLF 2003-2005; Golf/Rabbit 08> 2007-; Golf/Rabbit 2005-2007.
