DO88 BMW F8X S55 Performance Chargecooler

DO88 BMW F8X S55 Performance Chargecooler is a performance upgrade developed by DO88 for the applications listed below.

A bar-and-plate top-mount water-to-air chargecooler for the S55 engine. It replaces the factory tube-and-fin cooler with plastic end tanks, targeting both improved reliability and better airflow/temperature control under repeated high-load use.

Key Features

• 85% larger core volume than OE
• 298 CFM versus 256 CFM at 0.025 bar in DO88 testing
• 39°C versus 48°C post-cooler temperature in the stated comparison
• Up to 25 hp mid-range and 52 Nm gain in DO88's stated Stage 1 testing
• TIG-welded aluminium construction
• Replaces BMW OE reference 17517846235

Vehicle Compatibility

BMW M2 Competition F87 2019-2020; BMW M3 / M3 Competition F80 2015-2018; BMW M4 / M4 Competition / M4 GTS / M4 CS F82/F83 2015-2020.

Fitment note: Vehicle specification can vary by market, model year and factory equipment. Check the listed chassis, engine and transmission requirements before ordering.

DO88 develops model-specific cooling and airflow components using vehicle measurement, CAD/3D modelling and physical testing. This product is intended for owners looking to improve durability, thermal control or airflow on fast-road, tuned and track-focused BMW applications.

Please check engine, chassis and model-year fitment before ordering. If unsure, contact us with your registration or VIN.

Warranty: Products are supplied with the applicable manufacturer warranty.

Shipping: do88 state that in-stock products ordered before 2pm are normally shipped the same day. UK transit time varies by service.

Returns: Custom-made items can have different return conditions.

Klarna payment options are available at checkout where eligible.