Racingline Oil Cooler for DSG/ MQB / DQ250 6-speed

RacingLine DSG Oil Cooler Kit – DQ250 / DQ381 MQB & MQB Evo

The RacingLine DSG Oil Cooler Kit is a complete kit for additional oil cooling in the DSG gearbox, developed for 2.0 TSI MQB and MQB Evo vehicles with DQ250 6-speed DSG or DQ381 7-speed DSG.

When you increase power and torque, not only does the engine start working under higher load. The DSG gearbox also has to transfer more force to the wheels, which generates significantly more heat in the transmission oil.

During aggressive driving, track use, high ambient temperatures, or with a tuned car, the factory water-to-oil cooler of the DSG gearbox can quickly reach its limits. When the oil cannot dissipate heat quickly enough, it begins to thin out and lose some of its lubricating properties.

Under such conditions, DSG management can start to protect the gearbox – by reducing torque, slowing down gear changes, and in extreme cases, even limiting or losing gear selection. The RacingLine DSG Oil Cooler Kit is designed precisely to prevent this problem.

The kit adds an additional front-mounted air-to-oil cooler, installed directly in the cold air stream. This way, the DSG oil temperature can be reduced by about 15–20°C, depending on driving style, ambient temperature, and tuning level.

RacingLine retains the factory water-to-oil cooler and adds a second air-to-oil cooler. This means dual cooling – the DSG oil continues to reach operating temperature quickly through the factory system, but when it starts to overheat, the thermostatic RacingLine block opens the path to the additional front cooler.

The thermostatic adapter directs oil to the front cooler only when the temperature reaches approximately 82°C. This way, the system does not overcool the oil during normal driving, but provides serious cooling capacity precisely when the load increases.

The heart of the system is a 10-row plate air-to-oil cooler, which passes hot transmission oil through a series of aluminum plates. When cold air flows through the dense cooling fins, heat is efficiently dissipated, and the DSG gearbox operates at a more stable temperature.

The kit uses AN10 210 Series oil lines with an outer nylon braid and internal stainless steel reinforcement for high resistance. Additional protective sheathing protects the lines from chafing in real-world use.

This is the right upgrade for cars with Stage 1, Stage 2, or Stage 3 configuration, track driving, high load, or simply for owners who want their DSG gearbox to operate more stably and protected during serious driving.

Key Benefits

• Complete kit for additional DSG oil cooling
• Developed for 2.0 TSI MQB and MQB Evo vehicles
• Suitable for DQ250 6-speed DSG and DQ381 7-speed DSG
• Reduces DSG oil temperature by approximately 15–20°C
• Helps prevent DSG protection mode under high load
• Ensures more stable gearbox operation during aggressive driving
• Helps preserve the lubricating properties of the transmission oil
• Retains the factory water-to-oil cooler and adds an additional air-to-oil cooler
• Thermostatic adapter block that opens flow to the cooler at approximately 82°C
• 10-row plate air-to-oil cooler
• Front mounting in optimal cold air flow
• Low-profile water-to-oil cooler for proper installation under the battery tray
• AN10 210 Series oil lines with nylon braid and internal stainless steel reinforcement
• CNC machined aluminum components
• Components made of T6 6061 aluminum for precise fitment and durability
• Complete mounting kit with all necessary fasteners

Why this upgrade matters?

The DSG gearbox is extremely fast and efficient, but with high power and aggressive driving, the oil inside is severely stressed. When the temperature rises too much, the transmission starts to protect itself, which can lead to slower shifts, reduced power, and loss of consistency.

The RacingLine DSG Oil Cooler Kit adds cooling capacity exactly where it's needed – at the front of the car, in a direct flow of cold air. This allows the DSG gearbox to operate more stably during repeated accelerations, track use, mountain driving, or high summer temperatures.

Dual Cooling

The RacingLine system does not remove the factory water-to-oil cooler. Instead, it retains it and adds an additional air-to-oil cooler.

• The factory water-to-oil cooler helps the DSG oil reach operating temperature faster.
• When the oil starts to overheat, the thermostatic block opens the flow to the front air-to-oil cooler.
• After cooling, the transmission oil returns at a lower temperature, and less heat is transferred to the engine's cooling system.

Versions

• VWR29G7250 – for DQ250 6-speed DSG in MQB vehicles
• VWR29DQ381 – for DQ381 7-speed DSG in MQB vehicles
• VWR29DQ381EVO – for DQ381 7-speed DSG in MQB Evo vehicles

Construction

• 10-row plate air-to-oil cooler
• Front mounting behind the lower bumper opening
• CNC machined thermostatic adapter block
• Integrated thermostatic valve for oil flow control
• Low-profile water-to-oil cooler that maintains the required height under the battery tray
• AN10 210 Series oil lines for supply and return
• Nylon outer braid and internal stainless steel reinforcement
• Protective outer sheathing on oil lines against chafing
• CNC aluminum components made of T6 6061
• Gloss anodized components for long-lasting protection and premium appearance

What the kit includes

• Oil cooler mounting brackets
• AN10 210 Series oil supply line
• AN10 210 Series oil return line
• CNC thermostatic adapter block
• Low-profile water-to-oil cooler
• AN10 10-row air-to-oil cooler
• Mounting kit with necessary nuts, bolts, washers, and rubber mounting bushings

Suitable for – MQB Evo DQ381

• VW Golf 8 / 8.5 GTI – 2020+
• VW Golf 8 / 8.5 GTI Clubsport – 2020+
• VW Golf 8 / 8.5 R – 2020+
• VW Arteon R 2.0 TSI 320 hp – 2020+
• VW T-Roc R 2.0 TSI EA888.4 – 2021+
• VW Tiguan II 2.0 TSI 245 hp – 2021+
• VW Tiguan II R 2.0 TSI 320 hp – 2020+
• VW Polo 6 GTI 2.0 TSI 207 hp AW.2 – 2021+
• Audi S3 8Y / 8Y.2 – 2020+
• Audi TT 45 TFSI 8S 245 hp EA888.4 – 2021+
• Audi SQ2 facelift EA888.4 – 2021+
• Cupra Leon 4 / 4.5 FW – 2020+
• Cupra Ateca 300 hp EA888.4 – 2021+
• Cupra Formentor – 2020+
• Skoda Octavia 4 / 4.5 vRS 2.0 TSI 245 hp – 2020+
• Skoda Superb III 2.0 TSI facelift EA888.4 – 2021+

Suitable for – MQB DQ250 / DQ381

• VW Golf 7 / 7.5 R – 2013–2020
• VW Golf 7 / 7.5 GTI & Clubsport – 2013–2020
• VW Golf 7 / 7.5 1.8 TSI – 2013–2020
• VW Passat B8 2.0 TSI – 2015+
• VW Arteon 2.0 TSI – 2017–2020
• VW T-Roc 2.0 TSI – 2017–2022
• VW Tiguan II 2.0 TSI – 2016–2020
• VW Jetta / GLI 7 – 2018+
• Audi S3 8V – 2013–2020
• Audi A3 8V 2.0 TSI / 1.8 TSI – 2013–2020
• Audi TT 8S – 2014+
• SEAT Leon / Cupra Leon MQB
• Skoda Octavia vRS MQB
• Other MQB vehicles with DQ250 or DQ381 DSG gearbox

Installation

• The kit for MQB vehicles comes with two sets of mounting brackets – one for Audi S3 8V and one for Golf 7 / other MQB models.
• Bracket installation requires drilling holes through the front crash bar.
• The front cooler is positioned behind the left lower bumper opening for optimal airflow.
• Professional installation and proper bleeding/servicing of the DSG system according to the procedure for the specific gearbox are recommended.

Important

• Choose the correct version based on gearbox and platform: DQ250 MQB, DQ381 MQB or DQ381 MQB Evo.
• VWR29G7250 is only for DQ250 6-speed DSG gearboxes.
• VWR29DQ381 is for DQ381 7-speed DSG gearboxes in MQB.
• VWR29DQ381EVO is for DQ381 7-speed DSG gearboxes in MQB Evo.
• RacingLine states that the DQ250 version is not suitable for US-spec DQ250 vehicles with a Secondary Air Injection system.
• Compatibility check by model, year, platform, and gearbox code is recommended before ordering.
• This is not a substitute for regular DSG oil and filter service.