HEL Direct Fit Oil Cooler Kit for Ford Focus MK3 RS/ST
When an employee at the HEL (Automotive) Development Centre experienced high oil temperatures in his own Ford Focus RS Mk3, the team recognized an opportunity to create the ultimate oil cooler kit. After a period of successful testing, this kit is now available for purchase.
The team understood that RS enthusiasts would prefer not to drill or cut any part of their vehicle to install an oil cooler. Consequently, they 3D scanned the engine bay to identify the optimal solution. This led to the manufacture of a custom aluminum bracket that mounts the oil cooler to the crash bar using the OEM mounting points. This strategic placement ensures the cooler sits in direct airflow behind the top grille, an ideal location for effective cooling.
The kit is designed around the widely acclaimed Swedish-manufactured Setrab Series 6 ProLine oil cooler. The 13-row option was chosen for its excellent balance of minimizing pressure loss while providing highly effective cooling.
HEL Performance has relied on Setrab oil coolers for over a decade without any issues, a testament to their unrivaled performance. While many cheaper imported alternatives exist, none can match Setrab’s reliability; a burst oil cooler is a significant concern. Notably, there have even been instances where Setrab oil coolers were the only components that remained functional after front-end collisions.
This comprehensive kit arrives complete with pre-assembled HEL braided hoses and anodized aluminum fittings. These AN10 high-flow performance hoses efficiently deliver and return oil from the cooler to a trusted Mocal thermostatic sandwich plate, which is precisely set at 92°C (197.6°F). This temperature setting provides the perfect balance between effective cooling when needed and allowing the engine to warm up safely. Operating the oil at excessively low temperatures can be detrimental, and the thermostat ensures precise temperature control.
This direct-fit kit offers a safe and reliable cooling system for the iconic Focus RS. It includes easy-to-understand instructions, and the HEL Performance technical support team is always available to assist with any questions.
What’s Included
- Setrab Series 6 ProLine 13 row oil cooler with AN10 banjo adapters.
- HEL custom aluminium mounting bracket.
- HEL 92°C thermostatic oil filter sandwich plate with AN10 adapters.
- Preassembled AN10 HEL braided hoses with anodised aluminium fittings (heat sleeve optional).
- HEL Aluminium hose separator.
- Stainless steel mounting hardware.
- Installation instructions.




