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Exhaust Nuts / Bolts / Studs

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DISPLAYING 1 to 3 (of 3 products)
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9A700830700::2
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Bolt For Exhaust System M10x92.

Fits:
Porsche 991 GT3 RS / Speedster MKI / MKII 2014>>2019

Porsche 992 GT3 / RS / ST MKI 2021>>2024

Diagram Ref No 27



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9A700830700
9A700830700

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Special Order item
PAF007634
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Exhaust manifold Hexagon flange nut, self-locking, M8
Sold each.

porsche

Fits:
Porsche 982 Boxster 2017>>
Porsche 982 Boxster Spyder 2019>>
Porsche 982C Cayman 2017>>
Porsche 982C Cayman GT4 2019>>
Porsche 991.2 Carrera 2017-19
Porsche 991 GT3 RS / Speedster 2014-21
Porsche 992.1 Carrera 2019>>
Porsche 992 Turbo 2020>>
Porsche 992 GT3 2021>>
Porsche 95B.2 Macan 3.0L / 3.6L 2014-18
Porsche 955 Cayenne 4.5L 2003-06 (T90 / T91 Engines)
Porsche 957 Cayenne 4.8L 2007-10
Porsche 958 Cayenne 3.6L / 4.8L 2011-18

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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PAF007634
PAF007634
99908464202

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PAF007634T
Product Information
Product Information
Exhaust manifold Hexagon flange nut, self-locking, M8   Titanium
Sold each.

rohler

Fits:
Porsche 982 Boxster 2017>>
Porsche 982 Boxster Spyder 2019>>
Porsche 982C Cayman 2017>>
Porsche 982C Cayman GT4 2019>>
Porsche 991.2 Carrera 2017-19
Porsche 991 GT3 RS / Speedster 2014-21
Porsche 992.1 Carrera 2019>>
Porsche 992 Turbo 2020>>
Porsche 992 GT3 2021>>
Porsche 95B.2 Macan 3.0L / 3.6L 2014-18
Porsche 955 Cayenne 4.5L 2003-06 (T90 / T91 Engines)
Porsche 957 Cayenne 4.8L 2007-10
Porsche 958 Cayenne 3.6L / 4.8L 2011-18

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAF007634T
PAF007634
99908464202

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DISPLAYING 1 to 3 (of 3 products)
About Exhaust Nuts / Bolts / Studs

Exhaust Nuts, Bolts & Studs for Porsche | Secure Fitment for High-Performance Exhaust Systems

Your Porsche’s exhaust system operates under extreme heat, vibration, and pressure — making durable fasteners like exhaust nuts, bolts, and studs essential for reliability and safety. These components secure exhaust manifolds, catalytic converters, mufflers, and pipes together, maintaining a tight seal and precise alignment throughout the system.

At Design911, we offer a wide selection of standard and precision-engineered exhaust fasteners designed to meet or exceed manufacturer specifications. Made from heat-resistant, corrosion-proof materials, these nuts, bolts, and studs ensure long-lasting performance, perfect fitment, and effortless installation for both standard and performance exhaust systems.

Whether you’re rebuilding a classic 911 or servicing a modern Porsche GT model, our high-strength exhaust fixing hardware provides superior durability and resistance to loosening under thermal cycling.

What Do Exhaust Nuts, Bolts & Studs Do?

These components are the backbone of the exhaust system’s structural integrity. They keep all exhaust sections securely connected, ensuring no movement or leaks under load.

Core Functions:

  • Secure exhaust joints and flanges between manifolds, catalytic converters, and pipes.
  • Maintain consistent exhaust pressure by preventing gaps or misalignment.
  • Reduce vibration and mechanical stress.
  • Enable easy serviceability for exhaust maintenance or upgrades.
  • Ensure safe operation under high heat and pressure.

Without robust fasteners, even the most advanced exhaust systems can suffer from leaks, rattling, or part failure — leading to reduced performance and increased emissions.

Why Do Exhaust Fasteners Fail?

Exhaust nuts, bolts, and studs operate in one of the harshest environments in a vehicle. Over time, exposure to heat, moisture, and vibration can degrade even the strongest materials.

Common Causes of Failure Include:

  • Corrosion or rust from moisture and road salt.
  • Thermal expansion causing loosening or cracking.
  • Over-torquing during installation.
  • Metal fatigue from repeated heating and cooling cycles.
  • Cross-threading or thread stripping during servicing.

When fasteners fail, exhaust leaks, rattling, and poor gas flow can occur — impacting performance, sound, and emissions compliance.

Why Replace or Upgrade Your Exhaust Fasteners?

Replacing worn or rusted exhaust hardware is vital for ensuring the longevity and reliability of your Porsche’s exhaust system.

Key Benefits:

  • Restores exhaust system integrity and secure fitment.
  • Prevents leaks, rattles, and misalignment. Improves exhaust flow and performance reliability.
  • Crafted from high-strength stainless steel or coated alloy.
  • Direct-fit compatibility for Porsche 911, Cayman, Boxster, Panamera & Macan.
  • Ideal for both restoration and performance applications.

High-quality fasteners not only provide peace of mind during installation but also withstand years of performance driving without corrosion or seizing.

Highlights:

  • Premium exhaust nuts, bolts & studs for Porsche vehicles.
  • Designed for high-heat, high-vibration environments.
  • Prevents leaks and loosening in the exhaust system.
  • Heat- and corrosion-resistant stainless steel construction.
  • Ideal for rebuilds, upgrades, or performance tuning.
  • Precision-engineered to manufacturer standards.

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