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- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
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Set of 12 studs and 12 M8 nuts
Fits:
- Porsche Boxster 718 2.0L Manual (300 Bhp)
- Porsche Boxster 718 2.0L PDK (300 Bhp)
- Porsche Boxster S 718 2.5L Manual (350 Bhp)
- Porsche Boxster S 718 2.5L PDK (350 Bhp)
- Porsche Boxster T 718 2.0L Manual (300 Bhp)
- Porsche Boxster T 718 2.0L PDK (300 Bhp)
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman 718 2.0L Manual (300Bhp)
- Porsche Cayman 718 2.0L PDK (300Bhp)
- Porsche Cayman S 718 2.5L Manual (350Bhp)
- Porsche Cayman S 718 2.5L PDK (350Bhp)
- Porsche Cayman T 718 2.0L Manual (300Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Replaces diagram ref no 3
This premium cylinder head to manifold titanium stud and nut kit is the ultimate solution for future-proofing your exhaust system. Manufactured from Grade 5 Ti6Al4V titanium, these fasteners offer exceptional strength comparable to steel while delivering an impressive 40% weight reduction. Titanium also provides natural corrosion resistance, ensuring the studs and nuts will not rust, seize or degrade even after repeated heat cycles and long-term exposure to extreme engine bay conditions.
Perfect for performance upgrades, engine rebuilds, exhaust overhauls or preventative maintenance, this titanium stud kit guarantees reliability, serviceability and long-lasting durability.
What Titanium Cylinder Head to Manifold Studs & Nuts Do
These titanium fasteners play a crucial role in exhaust
system performance and reliability:
- Secure
the exhaust manifold to the cylinder head under high heat and
vibration
- Maintain
consistent clamping force, preventing exhaust leaks
- Provide
excellent thermal stability, resisting heat cycling fatigue
- Reduce
overall hardware weight, improving performance and serviceability
- Prevent
corrosion, avoiding seized or snapped studs during future maintenance
- Support performance exhaust systems with high-strength, precision-threaded hardware
This kit delivers superior fastening strength and long-term exhaust sealing.
Why Standard Exhaust Studs Commonly Fail
Conventional steel exhaust studs operate in harsh
environments where heat, moisture and vibration accelerate deterioration.
Common failure causes include:
- Rust
and corrosion, especially in older or high-mileage vehicles
- Stud
seizure, making removal extremely difficult
- Thermal
expansion fatigue, weakening the metal over time
- Shearing
or snapping, often during exhaust servicing
- Material
degradation from repeated heat cycles
- Exposure to salt and moisture, especially in winter climates
These failures can lead to exhaust leaks, poor performance, broken studs in the cylinder head and costly repair work.
Why You Should Replace Them with Titanium Studs & Nuts
Switching to high-grade titanium fasteners ensures exceptional long-term performance and eliminates common exhaust hardware issues.
Key benefits include:
- Rust-proof
performance, even after years of heat cycling
- As
strong as steel but 40% lighter thanks to Ti6Al4V alloy construction
- Reduced
risk of stud seizure, making future exhaust removal easier
- Improved
durability, especially on tuned or high-temperature engines
- Enhanced
thermal stability, maintaining clamping force under extreme heat
- Ideal
for performance exhaust systems, turbocharged engines and track-driven
vehicles
- Future-proofing your engine bay, saving time and money on future repairs
For any rebuild, upgrade or exhaust replacement, these titanium studs are a significant and smart improvement over traditional fasteners.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9M7182025SPYTISTUDHEAD
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 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 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
3 per heat exchanger.
Fits:
Porsche 911 1965-89 (6 for both heat exchangers)
Porsche 964 Carrera 1989-94 (4 for both heat exchangers)
Porsche 993 Carrera 1994-98 (5 for both heat exchangers)
Porsche 993 Turbo 1994-98 (4 for both heat exchangers)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99908500103
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 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)
Fits:
Porsche 911 1965-89
Porsche 911 (930) Turbo 1975-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 21
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90006716102
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
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
The product you are viewing cross references to these numbers