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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram

Exhaust Nuts / Bolts / Studs

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DISPLAYING 1 to 10 (of 10 products)
MANIFOLDKIT997GT3
Product Information
Product Information
Exhaust manifold fitting kit.

Contains manifold to head studs and gaskets.
Bolts are made out of Titanium. Gaskets are OEM.

Fits:
Porsche 997 GT3 2007-2011


Special Offer
TITANSTUDS18
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 18 x Studs (38mm), Nuts & Washers

Fits:
Porsche 996 Turbo / GT3 / GT2
Porsche 997 Turbo / GT3 / GT2
Porsche 997.2 ALL
Porsche 991 ALL
Porsche 992 ALL
Porsche 987 2009-12
Porsche 981
Porsche 718 GT4

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Related, superseded, cross reference or alternative numbers for comparison.

TITANSTUDS18
90037813100
90037822709
99907507400
90037822701
99907353501
99907507400
99907353501
99907507400

The product you are viewing cross references to these numbers
Special Offer
TITANTORXLONG18
Product Information
Product Information
Titanium exhaust manifold bolts M8x27. Torx head.
Pack of 18 pcs.

rohler

Fits:
Porsche 996 Turbo / GT2 / GT3 1999-2005
Porsche 997.1 Turbo / GT2 / GT3 2007-2009
Porsche 997.2 Turbo / GT2 RS / GT3 2010-2013

Porsche 991 Turbo / Turbo S / GT2RS  2014-2020

Titanium is a highly corrosion-resistant material, which is particularly important in exhaust systems due to the exposure to extreme heat and moisture. The corrosion resistance of titanium bolts ensures longevity and reduces the risk of premature failure, ultimately saving the owner from costly repairs.

Click 'Zoom in' for large parts diagram.
Diagram ref no 9



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Related, superseded, cross reference or alternative numbers for comparison.

TITANTORXLONG18
99907358901
90037822701
90037813100

The product you are viewing cross references to these numbers
Special Order item
90037813100
Product Information
Product Information
Exhaust manifold bolt. M8 x 28.
EACH

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 996 C2 / C4 3.4L >>2001
M96.01, M96.02, M96.03,
Porsche 996 GT3 / GT3 RS 2000-05
Porsche 997 GT3 2007-10

Click 'Zoom in' for large parts diagram.
Diagram ref no 4.

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

90037813100
90037813100

The product you are viewing cross references to these numbers
Special Offer
90037813100/1
Product Information
Product Information
Exhaust manifold bolt. M8 x 28.
EACH

oematch

Fits:
Porsche 986 Boxster 1997-04
Porsche 996 C2 / C4 3.4L >>2001
M96.01, M96.02, M96.03,
Porsche 996 GT3 / GT3 RS 2000-05
Porsche 997 GT3 2007-10

Click 'Zoom in' for large parts diagram.
Diagram ref no 4.

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

90037813100
90037813100

The product you are viewing cross references to these numbers
Special Order item
99611122900
Product Information
Product Information
Silencer bracket Damper. Porsche 996 / 996 GT3
porsche

Fits:
Porsche 996 GT3 2000-05
Porsche 997 GT3 2007-11
Porsche 991 GT3 2013-17
Porsche 991 GT3 RS / R 2014-17
Porsche 991.2 GT3 / RS 2017-20 (not for Speedster)


Click 'Zoom in' for large parts diagram.
Diagram ref no 34

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99611122900
99611122900

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Special Order item
99611128170
Product Information
Product Information
Sleeve For Exhaust System Heat Shield.
Sold Each.
x20 Required Per Car.

Fits:
Porsche 997.1 Turbo / GT2 MKI 2007>>2009

Diagram Ref No 28

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99611128170
99611128170

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Special Offer
SL-TI-18
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 18 x Studs, Nuts & Washers

Fits:
Porsche 996 Turbo / GT3 / GT2
Porsche 997 Turbo / GT3 / GT2
Porsche 997.2 ALL
Porsche 991 ALL
Porsche 992 ALL
Porsche 987 2009-12
Porsche 981
Porsche 718 GT4

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

SL-TI-18
90037813100
90037822709
99907507400
90037822701
99907353501
99907507400
99907353501
99907507400

The product you are viewing cross references to these numbers
SL-EX-02
Product Information
Product Information
Titanium exhaust tip titanium fastenings

silverlake

Fits
Porsche 997 GT3
Porsche 997 GT3 RS
Both Gen 1 and Gen 2
Porsche 991 GT3
Porsche 991 GT3 RS

Titanium exhaust fastener kit for Porsche 911 GT3/GT3RS style exhaust tips.

The kit includes 3x titanium flange nuts and 3 correct washers (two off-centered, and a standard washer).

Lighter than steel, they will not corrode and look good indefinitely.

The black nuts and washers are black titanium nitride coated, the silver, raw titanium.

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

SL-EX-02
99711125390
99711125393
99908464901
99711175391
99711175391

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Special Offer
SL-EX-03
Product Information
Product Information
Titanium exhaust tip titanium nut and bolt fastening kit.

Fits

Porsche 997 GT3
Porsche 997 GT3 RS
Porsche 991 GT3
Porsche 991 GT3 RS

Titanium exhaust fastener kit for Porsche 911 GT3/GT3RS style exhaust tips.

The kit includes 3x titanium flange nuts, 3 correct washers (two off-centered, and a standard washer) and 3 x bolts to install the exhaust tips when using a center muffler bypass exhaust. Bolts are raw titanium.

Lighter than steel, they will not corrode and look good indefinitely.

The black nuts and washers are black titanium nitride coated, the silver, raw titanium.

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

SL-EX-03
99711125390
99711125393
99908464901
99711175391
99711175391

The product you are viewing cross references to these numbers
DISPLAYING 1 to 10 (of 10 products)
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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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