The cooling system in your car is kept under pressure to raise the boiling point of the coolant. When the coolant system reaches a specific pressure threshold the coolant cap acts as a release valve, vents the excessive pressure, and draws coolant into the expansion tank. When the coolant temperature and pressure decrease coolant is returned from the expansion tank into the rest of the cooling system. The coolant cap, also known as the expansion tank cap or radiator cap should be changed when ever the expansion tank is replaced or a part of any cooling system overhaul. If a coolant cap is faulty and not releasing pressure it can lead to over pressurizing the coolant system. This can lead to splitting the expansion tank.
Audi A3 8L1 (1997-2003) 1.6L 74kW | 1.6 |
Audi A3 8L1 (1997-2003) 1.6L 75kW | 1.6 |
Audi A3 8L1 (1997-2003) 1.8L 92kW | 1.8 |
Audi A3 8L1 (1997-2003) 1.8L 110kW | T |
Audi A3 8L1 (1997-2003) 1.8L 132kW | T |
Audi S3 8L1 (1997-2003) 1.8L 154kW | S3 |
Audi S3 8L1 (1997-2003) 1.8L 165kW | S3 |
Audi A4 B5, 8D5 (1995-2001) 1.8L 92kW | 1.8 ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 1.8L 110kW | T ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 1.8L 132kW | T ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 1.8L 110kW | T ! Fitment Restriction: Code: AEB, VIN from: from 8D-T-309403, VIN to: until 8D-T-309402, Code: ANB, Code: APU, Code: ARK, Code: AWT
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Audi A4 B5, 8D5 (1995-2001) 1.8L 92kW | 1.8 quattro ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 2.4L 120kW | 2.4 ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 2.4L 121kW | 2.4 ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 2.4L 121kW | 2.4 quattro ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 2.6L 110kW | 2.6 ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 2.6L 110kW | 2.6 quattro ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D5 (1995-2001) 2.8L 142kW | 2.8 ! Fitment Restriction: Code: AQD, VIN to: until 8D-T-309402, Code: ACK, VIN from: from 8D-T-309403, Code: ALG, Code: APR
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Audi A4 B5, 8D2 (1995-2001) 1.8L 92kW | 1.8 ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D2 (1995-2001) 1.8L 132kW | T ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D2 (1995-2001) 1.8L 110kW | T ! Fitment Restriction: Code: AEB, VIN from: from 8D-T-309403, VIN to: until 8D-T-309402, Code: ANB, Code: APU, Code: ARK, Code: AWT
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Audi A4 B5, 8D2 (1995-2001) 1.8L 110kW | T ! Fitment Restriction: Code: APU, VIN from: from 8D-T-309403, VIN to: until 8D-T-309402, Code: ARK, Code: AWT, Code: AEB, Code: ANB
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Audi A4 B5, 8D2 (1995-2001) 1.8L 92kW | 1.8 quattro ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D2 (1995-2001) 2.4L 121kW | 2.4 ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D2 (1995-2001) 2.4L 120kW | 2.4 quattro ! Fitment Restriction: Code: APZ, VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D2 (1995-2001) 2.4L 121kW | 2.4 quattro ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A4 B5, 8D2 (1995-2001) 2.6L 110kW | 2.6 quattro ! Fitment Restriction: VIN from: from 8D-T-309403, VIN to: until 8D-T-309402
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Audi A6 C5, 4B5 (1997-2005) 2.4L 121kW | 2.4 ! Fitment Restriction: Code: ALF, Model year to: until 04.2001, Code: AGA
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Audi A6 C5, 4B5 (1997-2005) 2.4L 121kW | 2.4 quattro ! Fitment Restriction: Code: ALF, Model year to: until 04.2001, Code: AGA
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Audi A6 C5, 4B5 (1997-2005) 2.8L 142kW | 2.8 quattro ! Fitment Restriction: Code: AQD, Model year to: until 04.2001, Code: APR, Code: AMX, Code: ALG, Code: ACK
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Audi A6 C5, 4B2 (1997-2005) 1.8L 132kW | T ! Fitment Restriction: Model year to: until 04.2001
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Audi A6 C5, 4B2 (1997-2005) 2.4L 121kW | 2.4 ! Fitment Restriction: Code: ALF, Model year to: until 04.2001, Code: AGA
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Audi A6 C5, 4B2 (1997-2005) 2.4L 121kW | 2.4 quattro ! Fitment Restriction: Code: ALF, Model year to: until 04.2001, Code: AGA
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Audi A6 C5, 4B2 (1997-2005) 2.8L 142kW | 2.8 ! Fitment Restriction: Code: AQD, Model year to: until 04.2001, Code: APR, Code: AMX, Code: ALG, Code: ACK
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Audi A6 C5, 4B2 (1997-2005) 2.8L 142kW | 2.8 quattro ! Fitment Restriction: Code: AQD, Model year to: until 04.2001, Code: APR, Code: AMX, Code: ALG
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Audi Q7 4LB (2006-2015) 3.0L 180kW | TDI ! Fitment Restriction: Code: CLZB
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Audi Q7 4LB (2006-2015) 3.0L 245kW | TFSI |
Audi Q7 4LB (2006-2015) 3.6L 206kW | FSI |
Audi TT 8N3 (1998-2006) 1.8L 132kW | T ! Fitment Restriction: Code: AUQ, Model year to: until 08.2002, Code: APP, Code: AJQ
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Audi TT 8N3 (1998-2006) 1.8L 165kW | T ! Fitment Restriction: Code: BAM, Model year to: until 08.2002, Code: APX
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Audi TT 8N9 (1999-2006) 1.8L 132kW | T ! Fitment Restriction: Code: AUQ, Model year to: until 08.2002, Code: APP, Code: AJQ
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Audi TT 8N9 (1999-2006) 1.8L 165kW | T ! Fitment Restriction: Code: BAM, Model year to: until 08.2002, Code: APX
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Volkswagen Touareg 7L6, 7LA, 7L7 (2003-2010) 3.6L 206kW | V6 FSI ! Fitment Restriction: Code: BHL, Code: BHK
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Volkswagen Touareg 7L6, 7LA, 7L7 (2003-2010) 3.2L 162kW | V6 ! Fitment Restriction: Code: BRJ, Code: BMX, Code: BMV, Code: BKJ, Code: AZZ
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Volkswagen Touareg 7L6, 7LA, 7L7 (2003-2010) 3.0L 176kW | V6 TDI |
Volkswagen Touareg 7L6, 7LA, 7L7 (2003-2010) 3.0L 165kW | V6 TDI |
Volkswagen Touareg 7L6, 7LA, 7L7 (2003-2010) 2.5L 128kW | R5 TDI |
Volkswagen Polo 9N (2001-2009) 1.9L 74kW | TDI ! Fitment Restriction: Code: AXR, Code: ATD
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Volkswagen Polo 9N (2001-2009) 1.4L 74kW | 16V |
Volkswagen Polo 9N (2001-2009) 1.4L 55kW | 16V ! Fitment Restriction: Code: BBY, Code: AUA
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Volkswagen Passat 3B6 (2000-2005) 2.3L 125kW | VR5 |
Volkswagen Passat 3B6 (2000-2005) 1.9L 96kW | TDI |
Volkswagen Passat 3B6 (2000-2005) 1.8L 110kW | T 20V |
Volkswagen Passat 3B3 (2000-2005) 2.8L 142kW | 2.8 4motion |
Volkswagen Passat 3B3 (2000-2005) 2.8L 140kW | 2.8 |
Volkswagen Passat 3B3 (2000-2005) 2.5L 110kW | TDI |
Volkswagen Passat 3B3 (2000-2005) 2.3L 125kW | V5 |
Volkswagen Passat 3B3 (2000-2005) 1.8L 110kW | T 20V |
Volkswagen Passat 3B5 (1997-2000) 2.8L 142kW | V6 ! Fitment Restriction: Code: AQD, Code: APR, Code: ACK
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Volkswagen Passat 3B5 (1997-2000) 1.8L 110kW | T ! Fitment Restriction: Code: APU, Code: ANB, Code: AEB
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Volkswagen Passat 3B2 (1996-2000) 2.8L 142kW | V6 ! Fitment Restriction: Code: AQD, Code: APR, Code: ACK
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Volkswagen Passat 3B2 (1996-2000) 2.3L 110kW | VR5 |
Volkswagen Passat 3B2 (1996-2000) 1.8L 110kW | T ! Fitment Restriction: Code: APU, Code: ANB, Code: AEB
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Volkswagen Passat 3B2 (1996-2000) 1.8L 92kW | 1.8 |
Volkswagen Passat 3B2 (1996-2000) 1.6L 74kW | 1.6 |
Volkswagen Golf MKIV, 1J5 (1999-2006) 2.0L 85kW | 2.0 |
Volkswagen Golf MKIV, 1J1 (1997-2005) 2.8L 150kW | VR6 |
Volkswagen Golf MKIV, 1J1 (1997-2005) 2.3L 125kW | V5 |
Volkswagen Golf MKIV, 1J1 (1997-2005) 2.0L 85kW | 2.0 ! Fitment Restriction: Code: AZJ, Code: AZG, Code: AQY, Code: APK
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Volkswagen Golf MKIV, 1J1 (1997-2005) 1.9L 81kW | TDI |
Volkswagen Golf MKIV, 1J1 (1997-2005) 1.9L 74kW | TDI ! Fitment Restriction: Code: AXR, Code: ATD
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Volkswagen Golf MKIV, 1J1 (1997-2005) 1.8L 110kW | T ! Fitment Restriction: Code: AUM, Code: ARZ, Code: AGU
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Volkswagen Golf MKIV, 1J1 (1997-2005) 1.8L 92kW | 1.8 4motion |
Volkswagen Golf MKIV, 1J1 (1997-2005) 1.8L 92kW | 1.8 |
Volkswagen Golf MKIV, 1J1 (1997-2005) 1.6L 75kW | 1.6 |
Volkswagen Golf MKIV, 1J1 (1997-2005) 1.6L 74kW | 1.6 |
Volkswagen Bora 1J2 (1998-2005) 2.8L 150kW | V6 |
Volkswagen Bora 1J2 (1998-2005) 2.3L 125kW | V5 |
Volkswagen Bora 1J2 (1998-2005) 2.3L 110kW | V5 |
Volkswagen Bora 1J2 (1998-2005) 2.0L 85kW | 2.0 ! Fitment Restriction: Code: AZJ, Code: AZH, Code: AZG, Code: APK
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Volkswagen Bora 1J2 (1998-2005) 1.9L 110kW | TDI |
Volkswagen Bora 1J2 (1998-2005) 1.6L 74kW | 1.6 |