AIRTEC MOTORSPORT AUDI RS6 C8 SIDE INTERCOOLERS (PAIR) SKU: 422544

If you’re considering the AIRTEC Motorsport Audi RS6 C8 side intercoolers (pair, also listed under part number ATINTVAG47), here are the key advantages followed by a few considerations (especially relevant if you’re into performance-tuning).

✅ Advantages

1. Increased capacity (~21%)
   The core design is deeper compared to OEM, providing about a 21% increase in overall capacity. 
   More capacity means more coolant / more air volume, which can reduce charge air temps (IATs) under load.
2. Improved cooling efficiency during heavy use
   AIRTEC report data-logging: when the turbo outlet / pre-intercooler temps rose by nearly +170% in a short time, their upgraded intercooler kept the post-intercooler air temps steady (no abnormal spikes). By contrast the OEM units showed larger spikes (~60% higher than the AIRTEC ones). 
   For high power or track/extended hard driving, that means reduced heat-soak risk and more stable performance.
3. Direct-fit with reuse of OEM hoses, mounts & air guides
   The unit is designed to fit into the stock location (same width/height, but deeper core) and uses the original boost hoses, mounting points and air-guides. That makes installation easier and retains much of the stock “fit & finish”. 
   For you (with performance car background), less fabrication is a bonus.
4. High-flow end tanks & quality finish
   The design includes high-flow, cast/ported end-tanks to ensure the core is fed and drained efficiently, reducing flow restrictions. Also coated in powder-black finish for durability and aesthetics. 
   Good when the engine is working hard and you want consistency.
5. Good for fast-road or track use
   They specifically say it’s developed for “track or fast road use” for the Audi RS6 C8/Audi RS7 C8.  

AIRTEC MOTORSPORT AUDI RS6 C8 SIDE INTERCOOLERS (PAIR) SKU: 422544