The EQT Billet Coolant Vent Union is a high-performance upgrade designed to replace the fragile factory plastic coolant union found on EA888 Gen3 and Gen4 engines. Located near the turbocharger, the OEM plastic union is exposed to intense heat, often becoming brittle and prone to failure over time. By switching to EQT’s billet aluminum solution, you reduce the risk of coolant leaks and improve overall engine reliability.
Precision-machined from billet 6061-T6 aluminum, this union is built to handle extreme temperatures and harsh engine bay conditions. A sleek black anodized finish adds corrosion resistance and long-lasting aesthetics, making it as durable as it is functional.
Problems With The Factory Coolant Vent Union
The problem
The turbo coolant vent union is located on top of the head of MQB 1.8T and 2.0T vehicles.
From factory the coolant vent union is plastic and quite fragile. Oftentimes when doing jobs such as an aftermarket turbocharger, this plastic coolant vent union breaks leading to leaks, delays, and potentially much more serious issues if not caught and resolved right away!
The EQT fix
Our solution was to create a CNC machined direct replacement for this part to eliminate these potential issues.
Direct Replacement Coolant Vent Union
CNC-Machined Build Quality
CNC-machined from 6061-T6 billet aluminum
Black anodized for corrosion resistance and a clean, long-lasting appearance
Includes pre-installed O-ring for hassle-free installation
Direct OEM replacement
OEM Part Number / Fitment
Cross-Reference Part Number
06K 121 143
Our Billet Coolant Union is intended to be used as a direct replacement for your MQB/MQBe 1.8T or 2.0T car.
This includes the following but is not limited to:
Mk8 GTI 2.0T
Mk8 Golf R 2.0T
8Y Audi S3
Mk7/Mk7.5 GTI 2.0T
Mk7/Mk7.5 GLI 2.0T
Mk7/Mk7.5 Golf R 2.0T
8v/8.5v Audi A3 2.0T
8v/8.5v Audi S3 2.0T
8v/8.5v Audi A3 1.8T
Mk7/Mk7.5 Golf 1.8T
Mk7/Mk7.5 Alltrack 1.8T
Mk7/Mk7.5 Sport wagon 1.8T
If you have any questions about fitment with your specific vehicle, please reach out to our team and we will be happy to assist!
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EQT Sales: During sales, some items may temporarily be on backorder, but rest assured we will work to get your order out as soon as possible. If your order has not been shipped within 10 business days feel free to email support@eqtuning.com with your order number for an updated ETA.
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EQT
EQT Billet Coolant Vent Union - VW/Audi MQB/e 1.8T/2.0T
$ 20.79
$ 25.99
Unit price /
Unavailable
The EQT Billet Coolant Vent Union is a high-performance upgrade designed to replace the fragile factory plastic coolant union found on EA888 Gen3 and Gen4 engines. Located near the turbocharger, the OEM plastic union is exposed to intense heat, often becoming brittle and prone to failure over time. By switching to EQT’s billet aluminum solution, you reduce the risk of coolant leaks and improve overall engine reliability.
Precision-machined from billet 6061-T6 aluminum, this union is built to handle extreme temperatures and harsh engine bay conditions. A sleek black anodized finish adds corrosion resistance and long-lasting aesthetics, making it as durable as it is functional.
FEATURES:
CNC-machined from 6061-T6 billet aluminum
Black anodized for corrosion resistance and a clean, long-lasting appearance
Includes pre-installed O-ring for hassle-free installation