3B0121321 – Coolant Expansion Tank Cap
$ 32.68 (exc. GST)
The radiator expansion tank cap is a crucial component of the vehicle’s cooling system. It maintains the pressure within the cooling system, allowing the coolant to reach higher temperatures without boiling. This cap also serves as a safety mechanism by releasing excess pressure to prevent damage to the radiator and other components. Typically, this cap is designed to withstand high temperatures and pressures, ensuring the integrity of the cooling system.
48 in stock
- Manufacturer’s warranty (typically 12 or 24 months or KM limited)
- Delivery time: 1-2 business days
- Send us your VIN to ensure compatibility with your car
Description
Description
The radiator expansion tank cap is a crucial component of the vehicle’s cooling system. It maintains the pressure within the cooling system, allowing the coolant to reach higher temperatures without boiling. This cap also serves as a safety mechanism by releasing excess pressure to prevent damage to the radiator and other components. Typically, this cap is designed to withstand high temperatures and pressures, ensuring the integrity of the cooling system.
Over time, the radiator expansion tank cap can become brittle or damaged due to exposure to high temperatures and pressure. A faulty cap may lead to coolant leaks, engine overheating, or reduced cooling efficiency. If you notice coolant leaks, engine overheating, or a decrease in coolant levels, it’s advisable to inspect the cap for damage and replace it if necessary.
This is a very high quality aftermarket replacement part.
Alternate Part Numbers: 3B0121321, 1J0121321B
Additional information
Additional information
| Make | Audi, Volkswagen |
|---|---|
| Model | A6, Caddy, Touareg |
| Submodel | Avant (4G, C7 facelift 2016), II (7P, facelift 2014), IV, Maxi IV, Maxi Panel Van IV, Panel Van IV, Sedan (4G, C7 facelift 2016) |
| year | 2018, 2019 |
| Variant | 1.4 TSI (125 Hp), 1.4 TSI (125 Hp) DSG, 2.0 TDI (190 Hp) quattro S tronic, 2.0 TDI ultra (190 Hp), 2.0 TDI ultra (190 Hp) S tronic, 3.0 V6 TDI (204 Hp) SCR 4MOTION Automatic |
| engine-code | CASD, CJMA, CNHA, CZCB, CZJA, DDDA |
| Transmission | 6 Speed Manual, 7 Speed DSG, 8 Speed Automatic |
| engine type |
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