ISR Performance OE Replacement Turbo Inlet Stud (Single Stud)

The ISR Performance OE Replacement Turbo Inlet Stud is a single stud for the turbo inlet flange, where the exhaust manifold meets the turbine housing. Anyone who has pulled a turbo off a high-mileage Nissan 240SX knows how this goes: the studs are rusted, the nuts are seized, and at least one stud twists off or strips on the way out. Rather than reusing damaged hardware, replace it and torque the turbo down on clean threads.

About this stud

• OE replacement style turbo inlet stud
• Sold as a single stud, so you can replace only the ones that are damaged
• Matching ISR turbo inlet stud nuts are listed separately

Why fresh studs matter

The turbo inlet joint sees the highest exhaust temperatures on the engine. Reused studs with stretched or galled threads are a common cause of exhaust leaks at the turbo flange, which show up as a ticking noise, slow spool and soot around the joint. New studs seat properly and let the nuts hold torque through repeated heat cycles.

Install tips

Chase the threads in the manifold before installing, and use a high-temperature anti-seize on the threads so the next removal goes smoother than the last one.

All ISR Performance products are designed for off-road use only.