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Porsche > 911 & 912 (1965-1989) > 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F) > Exhausts >

Exhaust Nuts / Bolts / Studs

Exhaust Nuts / Bolts / Studs

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DISPLAYING 17 to 20 (of 20 products)
1 2
Hex Head Bolt M8 x 16. Porsche 911 / 914 / 924 / 928 - 90007508702, 90007508703, 90007508704
1
Hex Head Bolt M8 x 16. Porsche 911 / 914 / 924 / 928
Special Order item
90007508704
Product Information
Product Information
Hex Head Bolt M8 x 16 used in various locations

Sold each

Fits:

  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95
  • Porsche 914 (1970-1976)

The Hex Head Bolt M8 x 16 is a versatile, high-strength fastener used in multiple locations across classic Porsche models—including the Porsche 911, 914, 924 and 928. As a critical component in securing brackets, covers, engine parts, underbody panels and suspension-related hardware, this bolt ensures structural integrity and reliability throughout the vehicle.

What This Bolt Does

The Hex Head Bolt M8 x 16 plays a crucial role in securing various mechanical and body components on a Porsche.

Common Functions

  • Secures brackets, panels and trim pieces
  • Anchors engine and drivetrain components
  • Holds suspension hardware and mountings
  • Fastens interior and underbody parts
  • Provides structural rigidity where load-bearing fasteners are required       



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Related, superseded, cross reference or alternative numbers for comparison.

90007508704
90007508702
90007508703
90007508704

The product you are viewing cross references to these numbers
Inconel exhaust head stud kit. Porsche 911 /964/993/986 - 99906200602, 99908400201/2, 99908400201, 90006010601, 99907507100, 90037813100, 9990750710A, 99907507400, 90037813100, 90007428702, 99907353501, 99907358901
1
Inconel exhaust head stud kit. Porsche 911 /964/993/986
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
Mounting Kit for Heat Exchanger. Porsche 911 63-76 - 91011KIT, 91.011KIT - 1621701410
1
Mounting Kit for Heat Exchanger. Porsche 911 63-76
91011KIT
Product Information
Product Information

Heat Exchanger Mounting Kit 

Ensure a secure and reliable installation of your air-cooled Porsche exhaust system with this OE Match Heat Exchanger Mounting Kit. This complete hardware kit contains the essential mounting components required when installing or replacing heat exchangers.

Porsche 911 1965-1968 2.0L / 912 SWB (F)
Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Porsche 911 1974-1976 2.7L / 1976 3.0 Carrera

Heat exchangers are exposed to constant heat cycles, moisture, road salt and vibration, making the original mounting hardware highly susceptible to corrosion, seized fasteners and fatigue. Reusing old hardware can make installation difficult and may compromise the security and alignment of the exhaust system.

This OE Match mounting kit provides the correct replacement hardware to ensure your heat exchangers are securely fitted, helping maintain proper exhaust sealing, reduce unwanted movement and support long-term reliability. Whether you're replacing heat exchangers, rebuilding an engine or carrying out a full restoration, installing new mounting hardware is always recommended.

Manufactured to OE Match standards, every component is designed for precise fitment and dependable performance.

What Does the Heat Exchanger Mounting Kit Do?

The mounting kit provides the hardware required to securely fasten the heat exchangers to the engine and exhaust system.

Its primary functions include:

  • Securing the heat exchangers in the correct position.
  • Maintaining proper exhaust alignment.
  • Supporting effective exhaust sealing.
  • Preventing movement caused by vibration.
  • Providing reliable long-term fastening.
  • Simplifying heat exchanger installation.

Using new mounting hardware helps ensure the exhaust system performs correctly while reducing the likelihood of future maintenance issues.

Why Replace Heat Exchanger Mounting Hardware?

Original exhaust hardware is subjected to extreme operating conditions and often deteriorates over time.

Common reasons for replacement include:

  • Corroded nuts and fasteners.
  • Seized or damaged hardware.
  • Fatigued mounting components.
  • Broken or rounded fasteners during removal.
  • Exhaust restoration projects.
  • Engine rebuilds.
  • Heat exchanger replacement.
  • Preventative maintenance.

Replacing the complete mounting hardware during installation helps ensure a secure fit and reduces the risk of future exhaust problems.

Features

  • Designed for Porsche 911 (1963-1976).
  • Complete installation hardware set.
  • Precision manufactured for accurate fitment.
  • High-quality, durable components.
  • Helps ensure secure heat exchanger installation.
  • Restores factory-style mounting.
  • Ideal for restoration, repair and engine rebuilds.
  • Suitable for replacing worn or corroded original hardware.

Why Choose OE Match Exhaust Components?

OE Match exhaust components and installation hardware are manufactured to deliver factory-quality fitment, durability and long service life. Designed specifically for classic Porsche applications, these components help ensure reliable installation while preserving the originality and performance of your vehicle. Whether you're carrying out a complete restoration or routine maintenance, OE Match products provide the quality expected by Porsche enthusiasts and professional workshops.



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

91011KIT
91011KIT
91.011KIT

The product you are viewing cross references to these numbers
Titanium exhaust head stud kit in. Porsche 911 / 964/993/986 - 99906200602, 99908400201/2, 99908400201, 90006010601, 99907507100, 90037813100, 9990750710A, 99907507400, 90037813100, 90007428702, 99907353501, 99907358901 - SLTi121
1
Titanium exhaust head stud kit in. Porsche 911 / 964/993/986
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 17 to 20 (of 20 products)
1 2
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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