Fit For Rover Discovery & Defender 300TDI 2.5L Models Intercooler. By significantly lowering the temperature of air compressed by the turbocharger, the intercooler increases its density, allowing more oxygen to enter the cylinders for combustion. The presence of an intercooler effectively prevents engine knocking or detonation, which safeguards critical internal components from potential damage under high boost. This intercooler efficiently lowers the temperature of compressed air from the turbocharger, increasing its density for more powerful and complete combustion in the engine. Its high-performance core design maximizes heat exchange area, allowing for rapid cooling of intake air and reducing the risk of engine knocking., Manufacturer: PUAYWMOZ