ISR Performance OE Replacement Nissan RB20DET RB25DET Turbo Inlet Stud and Nut Combo

Our OE replacement turbo inlet stud and nut combo for the RB20DET and RB25DET. Brand new black oxide high-grade steel hardware, sold as a complete set. The right fix for the stripped, rusted, or seized factory studs that anyone who has worked on a 20- to 30-year-old RB has run into.

What It Does

Direct replacement for the factory turbo inlet studs and nuts on the exhaust manifold side of the RB20DET and RB25DET. Factory studs on these engines have been baking under turbo heat for decades, and once they start seizing they tend to take threads with them. A fresh black oxide steel set restores proper clamping and gives you something you can actually torque to spec without snapping a stud off in the head.

Fitment

Fits Nissan RB20DET and RB25DET turbo inlet locations. Also works for most top-mount turbo manifolds using the same stud pattern.

What's in the Box

• 4x Turbo inlet studs (black oxide high-grade steel)
• 4x Nuts

Product Details

Brand: ISR Performance

Part Number: IS-TM-INSTD-CMB

Type: OE Replacement Turbo Inlet Stud and Nut Combo

Engine Fitment: Nissan RB20DET, RB25DET (also works for most top-mount turbo manifolds with the same stud pattern)

Material: Black oxide high-grade steel

Sold: As a full set (4 studs + 4 nuts)

Legality: Off-road and competition use only