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- 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
M8 Exhaust Nut - M8
Sold each and used throughout
The Porsche M8 Exhaust Nut is a high-quality
replacement fastener used in various positions across Porsche exhaust systems.
Designed to secure exhaust components such as manifolds, heat exchangers,
silencers, brackets and connecting flanges, this nut helps maintain correct
clamping force and reliable exhaust sealing.
Fits:
- 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
Exhaust nuts operate in extremely harsh conditions, exposed to heat cycles, vibration, moisture, road salt and corrosion. Over time, original nuts can seize, round off, strip or weaken, making removal difficult and reducing their ability to hold exhaust components securely.
Replacing worn exhaust hardware during servicing or restoration helps ensure a secure, leak-free and professional exhaust installation.
What Does an Exhaust Nut Do?
An exhaust nut fastens exhaust components to studs or bolts, holding joints tightly together and helping maintain gasket compression.
A correctly fitted exhaust nut helps provide:
- Secure exhaust component mounting
- Proper gasket sealing
- Reduced risk of exhaust leaks
- Correct exhaust alignment
- Improved resistance to vibration
- Long-term exhaust system reliability
Symptoms of Wear or Failure
Common signs that an exhaust nut may need replacement
include:
- Rust or heavy corrosion
- Rounded or damaged edges
- Stripped threads
- Seized nut during removal
- Loose exhaust joints
- Exhaust blowing noises
- Rattling or vibration from the exhaust
- Soot marks around exhaust flanges
- Inability to tighten to the correct torque
Why Replacement Matters
Replacing worn or corroded exhaust nuts helps prevent exhaust leaks, loose components and future repair difficulties.
Benefits include:
- Restores secure exhaust fastening
- Helps prevent exhaust leaks
- Improves gasket sealing
- Reduces vibration and rattles
- Makes future maintenance easier
- Supports reliable exhaust repairs
- Protects surrounding exhaust components
- Improves restoration quality
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90091009701
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
EACH
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
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
M8 x 35. EACH
Fits:
Porsche 986 Boxster 1997-05
Porsche 996 C2 / C4 / C4S 1997-05
Porsche 996 GT3 1999-05
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
M8. EACH
Fits:
Porsche 986 Boxster 1997-05
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 1997-05
Porsche 996 GT3 1999-05
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99908405202
The product you are viewing cross references to these numbers