This o-ring is located on the outlet of the factory intercooler on a TD42TI engine. It creates an essential seal between the intercooler body and the boost pipe that runs to the engine's intake. The original o-ring is made of rubber and is constantly exposed to heat, pressure, and oil vapour from the engine's breather system. These conditions cause the rubber to harden, become brittle, and eventually crack or flatten, losing its ability to seal effectively.
A failed or leaking o-ring will cause a boost leak. This results in a loss of engine power, increased fuel consumption, and higher exhaust gas temperatures. If left unfixed, a significant boost leak can put extra strain on your turbocharger and lead to poor engine performance, especially when you need it most.
Please check vehicle fitment to confirm compatibility with your vehicle. Please contact us with your VIN details if you require further assistance to confirm fitment.