420motorsport. Intercooler Accessories

What the accessories do for charge air cooling

An intercooler cools the air after the turbo or supercharger has compressed it, but the result also depends on the parts around it. A fan kit such as the KraftWerks Universal Intercooler Fan Kit can help the airflow along when there is no ram air, e.g. in traffic or during slow off-road driving. Pipes and couplers on the cold side, such as the pipe with coupler and clamp kit from aFe, must keep the boost pressure sealed all the way to the throttle body. The category also includes top- and front-mounted intercoolers, e.g. from AMS and Mishimoto, as well as a top mount charge air cooler from CSF. If you are looking for the cooler itself in more variants, also see our intercoolers.

How to choose the right accessories

Fitment: Many parts are made for specific models, e.g. Subaru WRX or Ford F-150, so check the part number against your car and engine.

Diameter and connections: Pipes and couplers must match the intercooler and throttle body so you avoid leaks and unnecessary pressure drop. Also see charge air pipes.

Cooling capacity over size: A bigger intercooler is not automatically better. Cooling capacity, pressure drop, available space and your power target together determine what works.

Use: Slow driving and track days stress the cooling differently, so choose based on how the car is actually driven.

Installation and maintenance

After installation, check that couplers and clamps are tight, ideally with a pressure test, and retighten after the first few drives. Keep the cooling fins free of dirt and bent fins. If the project changes boost pressure significantly, the engine may need a new tune – you should also factor the rest of your air and fuel cooling into the plan.

Frequently asked questions

When does an intercooler fan make sense?

Typically when ram air is not enough, e.g. during slow driving, in traffic or off-road. At higher speeds, ram air can often cool more than the fan. The effect depends on the product, placement and car.

Why does the engine lose performance after replacing intercooler pipes?

Often it is due to a leak at a coupler or a clamp that is not seated correctly. Check that pipes and couplers have the right diameter, that the clamps are tightened properly, and ideally pressure test the system.

Does an intercooler modification need to be approved at inspection?

It depends on the product and car. Check for the specific part number what documentation is available and whether the modification must be registered or inspected. Do not assume that an entire product series is approved for road use.