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MK4 Performance Aluminum Radiator

Direct-fit upgrade! Featuring a 26% increase in cooling system capacity along with a durable, all aluminum construction
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Product Details

The factory radiator in the VW MK4 Golf/Jetta was engineered to only support stock power outputs and last within a set service life. All too often the MK4 radiators leak out of the end tanks due to corrosion or failed epoxy and suffer from heat soak when more additional power is added. The ECS Tuning in-house engineered Performance Aluminum Radiator solves both issues by utilizing a larger volume, dual row, dual-pass aluminum heat exchanger, hand TIG-welded to 5052 aluminum end tanks and polished to perfection. Featuring a 26% increase in overall volume compared to stock, this is a direct replacement radiator that will outperform and outlast the OE unit!



  • Our radiator utilizes all factory mounts, fan shroud, fan switch and radiator hoses for a direct OE upgrade WITHOUT modifications to any other components 

  • Increase in +26% volume over the stock radiator. ECS Radiator measures 2.125 Liters internal volume compared to the OEM Radiator at 1.560 Liters

  • Larger volume, dual row, dual-pass aluminum heat exchanger

  • Pressure tested to 1.5 bar at 0% leak down to ensure quality and leak-proof manufacturing

  • Fabricated 5052 aluminum end tanks

  • Fully TIG welded, featuring a polished finish 



  • Aluminum Radiator

  • Radiator Fan Shroud mounting screws and washers - QTY 4

  • A/C Condenser mounting screws and washers - QTY 4

  • Lower A/C Line mounting screw and washer - QTY 1

  • Medium Strength, Blue Threadlock



  • +26% increase in cooling system capacity (+0.565 Liters) 

  • 100% aluminum construction, TIG welded and pressure checked, for enhanced durability 



  • Our ECS Performance Aluminum Radiator was designed, engineered, tested and quality inspected by our Research and Development team in our Wadsworth, Ohio facility. We strive for the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long term product testing.



  • Looking for installation tips? Look no further, we put together a full installation tutorial from start to finish, including how to remove your bumper and other parts, in detail! See our Installation PDF under the INSTALLATION Tab for more information. 

  • Please note that installation accessories are not included. Please see our full installation kit (ES4005135) with this radiator, for a complete package.

  • Due to vibrations, we recommend a few drops of medium-strength thread locking compound to be applied to the radiator fan shroud mounting screws. For your convenience, we've included a small tube for this purpose. 


This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi TT MKI Quattro 180HP
Audi TT MKI Quattro 225HP
Volkswagen 337/20AE All 1.8T
Volkswagen Golf IV All 1.8T
Volkswagen Golf IV All 2.0
Volkswagen Golf IV All TDI
Volkswagen Golf IV All VR6 12v
Volkswagen Golf IV All VR6 24v
Volkswagen Jetta IV All 1.8T
Volkswagen Jetta IV All 2.0
Volkswagen Jetta IV All TDI
Volkswagen Jetta IV All VR6 12v
Volkswagen Jetta IV All VR6 24v
Volkswagen Jetta IV GLI All 1.8T
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

Kit Contents

Description Brand Qty
Alloy Steel Torx Rounded Head Screws, M5 X 0.8 Mm Thread, 10 Mm Long ECS - Corporate Logo 9
Zinc-Plated Steel Oversized Washer For M5 Screw Size, 5.3 Mm ID, 15 Mm OD ECS - Corporate Logo 9
Performance Aluminum Radiator ECS - Corporate Logo 1
Medium Strength Threadlocker Blue - 0.5ml American Grease Stick - Corporate Logo 1

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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