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Exhaust Nuts / Bolts / Studs

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DISPLAYING 1 to 9 (of 9 products)
Special Order item
90007425202
Product Information
Product Information
Exhaust Bolt for Clamp. M8 x 65.
Replacement bolt for clamp


porsche

Fits:
Porsche 993 1994-98
Porsche 993 Turbo

Diagram Ref no 9.



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Related, superseded, cross reference or alternative numbers for comparison.

90007425202
90007425202

The product you are viewing cross references to these numbers
TITANSTUDS12
Product Information
Product Information
These titanium components are resistant to rust and corrosion, which can be a common issue with traditional steel studs and nuts. This corrosion resistance ensures that the studs and nuts maintain their integrity, allowing for easy removal and installation when necessary. They are the perfect upgrade for Porsche enthusiasts who demand the ease of access to vehicle's exhaust system. 

rohler

• Ultra-high-performance product
• Use of Titanium Ti6Al4V technology

Contains
12 x Studs, Nuts & Washers

Fits:
Porsche 911 1965-77
Porsche 964 (none Turbo)
Porsche 993 All
Porsche 996 (none Turbo)
Porsche 997 (none Turbo)
Porsche 986 All
Porsche 987 All
Porsche 718 4 Cyl Turbo

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Related, superseded, cross reference or alternative numbers for comparison.

TITANSTUDS12
99906200602
99908400201
99908400201
90006010601
99907507100
90037813100
9990750710A
99907507400
90037813100
90007428702
99907353501
99907358901

The product you are viewing cross references to these numbers
90006736201/1::1
Product Information
Product Information
Exhaust muffler stap bolt, M8 x 50
This Exhaust Muffler Strap Bolt is an OE Match fastening bolt designed to secure the exhaust muffler strap to the vehicle. It is a critical mounting component within the Porsche 993 exhaust system.
Sold individually, 2 required per vehicle (1 per muffler)

Fits:
Porsche 993 1995 - 1998

Length 50mm
Outer Thread 8mm
Thread Size 1.25

Diagram ref no 37

This OE Match exhaust strap bolt is a direct replacement for the original Porsche fastener used to mount the muffler retaining strap. Designed to factory specifications, it features a pan-head M8 x 50mm configuration, ensuring proper fitment and secure fastening

This component is specifically used in conjunction with the exhaust muffler strap (e.g. 99311111907) to hold the silencer firmly in place, maintaining correct exhaust alignment and structural integrity.

This bolt secures the muffler strap to the mounting point, ensuring the exhaust silencer remains properly positioned. It helps prevent movement, vibration, and misalignment of the exhaust system during operation.

Function
  Secures exhaust muffler strap to chassis mounting point
  Maintains correct positioning of exhaust silencer
  Prevents loosening under vibration and heat cycles
  Supports stable and secure exhaust system mounting
  Ensures long-term fastening reliability in high-temperature conditions

Exhaust fasteners are exposed to extreme heat, moisture, and road debris, which can cause corrosion, seizure, or thread damage. A worn or incorrect bolt may lead to loose exhaust components, increased vibration, or misalignment. Replacing it ensures secure fastening and proper exhaust system stability.

When to replace
  During exhaust or muffler strap replacement
  Bolt is corroded, seized, or damaged
  Loose or rattling exhaust components
  Signs of thread wear or stripped head
  Preventative replacement during exhaust maintenance



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

90006736201
90006702002
90006736202
90006736201
N0147512

The product you are viewing cross references to these numbers
Special Order item
90006736201::1
Product Information
Product Information
Exhaust muffler stap bolt, M8 x 50
The Porsche Genuine OE Exhaust Muffler Strap Bolt (Part No. 90006736201) is an original factory pan-head fastening bolt (M8 x 50 mm) used to secure the exhaust muffler retaining straps.
Sold individually, 2 required per vehicle (1 per muffler)

Fits:
Porsche 993 1995 - 1998

Diagram ref no 37

Supersession / Cross Reference Numbers: 90006702002, 90006736202, N0147512,

This bolt secures the muffler support straps that hold the exhaust silencer in place. It ensures the exhaust system remains firmly mounted to the vehicle chassis, preventing movement, vibration, or misalignment.

Exhaust bolts like this are designed to fasten critical components such as mufflers, pipes, and brackets, maintaining system integrity under heat and vibration.

Functions & Technical Role:
  Secure fastening: Fixes muffler straps to the exhaust mounting points
  Structural support: Maintains correct positioning of the exhaust silencer
  Vibration resistance: Designed to withstand exhaust system movement
  Heat durability: Suitable for high-temperature exhaust environments
  OEM precision: M8 x 50 mm dimensions for exact fitment

Exhaust fasteners are exposed to heat, vibration, and corrosion, which can cause them to seize, weaken, or fail over time. A worn or incorrect bolt can lead to:
  Loose or misaligned exhaust components
  Increased vibration or noise

•  Potential exhaust damage or detachment

Replacing with a genuine Porsche OE bolt ensures safe, secure exhaust mounting and proper system performance.



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

90006736201
90006702002
90006736202
90006736201
N0147512

The product you are viewing cross references to these numbers
Special Order item
99902512501::1
Product Information
Product Information
Exhaust Washer for Bolt.

 
porsche

Replacement washer, fits between silencer & tail pipe

Fits:
Porsche 993 1994-98

This product supersedes Porsche's old part numbers:
- 99902512509

Click 'Zoom in' for large parts diagram.
Diagram ref no 10.



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

99902512501
99902512501
99902512509

The product you are viewing cross references to these numbers
SL-In-12
Product Information
Product Information
High performance stud + nut kits for the exhaust manifold to cylinder head for Porsche. Using titanium and Inconel alloy studs, aerospace lock nuts, and a well-thought and balanced combination of metals and plating/coatings, our fasteners will perform better than the traditional fastener. They will never oxidize, and hence will unscrew easily when required.

silverlake

Novel ultra-high-performance product
• Use of Inconel 718 and aerospace technology
• Extreme perceived quality

Contains 12 x Studs, Nuts & Washers

Fits:
Porsche 911 1965-77
Porsche 964 (non Turbo)
Porsche 993 All
Porsche 996 (non Turbo)
Porsche 997 (non Turbo)
Porsche 986 All
Porsche 987 All
Porsche 718 4 Cyl Turbo

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

SL-In-12
99906200602
99908400201
99908400201
90006010601
99907507100
90037813100
9990750710A
99907507400
90037813100
90007428702
99907353501
99907358901

The product you are viewing cross references to these numbers
Special Order item
99908409401
Product Information
Product Information
Lock nut M6.
Used for various applications

porsche

Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1997



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

99908409401
99908409402
99908409401

The product you are viewing cross references to these numbers
Special Order item
PCG012231A
Product Information
Product Information
Spring washer A10 - Used in various positions

Fits:
Porsche 911 - 1978 to 1983
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 924 / 924S - 1980 to 1988
Porsche 944 - 1982 to 1991
Porsche 928 - 1978 to 1995



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

PCG012231A
90002800502
N0122314
PCG012231A

The product you are viewing cross references to these numbers
SL-Ti-121
Product Information
Product Information
High performance stud + nut kits for the exhaust manifold to cylinder head for Porsche. Using titanium and Inconel alloy studs, aerospace lock nuts, and a well-thought and balanced combination of metals and plating/coatings, our fasteners will perform better than the traditional fastener. They will never oxidize, and hence will unscrew easily when required.

silverlake

Novel ultra-high-performance product
• Use of Titanium Ti6Al4V technology
• Extreme perceived quality

Contains 12 x Studs, Nuts & Washers

Fits:
Porsche 911 1965-77
Porsche 964 (none Turbo)
Porsche 993 All
Porsche 996 (none Turbo)
Porsche 997 (none Turbo)
Porsche 986 All
Porsche 987 All
Porsche 718 4 Cyl Turbo

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

SL-Ti-121
99906200602
99908400201
99908400201
90006010601
99907507100
90037813100
9990750710A
99907507400
90037813100
90007428702
99907353501
99907358901

The product you are viewing cross references to these numbers
DISPLAYING 1 to 9 (of 9 products)
Also found on these pages
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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