Intercoolers are commonly used in various types of vehicles and equipment that utilize forced induction systems to increase engine performance. Some common applications include:

1. **Automobiles**: Intercoolers are often found in turbocharged and supercharged vehicles to cool the compressed air before it enters the engine, improving efficiency and power output.

2. **Motorcycles**: High-performance motorcycles with turbochargers or superchargers may also feature intercoolers to enhance their engine's performance.

3. **Marine engines**: Some high-performance boat engines use intercoolers to optimize the air intake temperature, ensuring better combustion and power delivery.

4. **Aircraft**: Turbocharged aircraft engines often incorporate intercoolers to maintain optimal air density at higher altitudes for efficient performance.

5. **Heavy-duty trucks**: Commercial trucks with turbocharged engines can benefit from intercoolers to maximize power output while maintaining fuel efficiency.

6. **Industrial machinery**: Some large industrial equipment, such as generators or excavators, may utilize intercoolers in their turbocharged engines to improve productivity and reliability.

In essence, any equipment or vehicle that employs forced induction to boost engine performance can benefit from the use of intercoolers to enhance efficiency and overall power output.