This exhaust manifold hardware kit is for OBD II M52 and S52 engines to upgrade OEM exhaust hardware. The studs in this kit use an external torx head and are designed to hard stop against the head at full installation depth. Copper nuts are used to prevent seizing to the studs due to heat cycling of the engine. The kit consists of the following parts. 
 
- 24x E-Torx corrosion resistant studs
- 24x copper high-temperature nuts