Exhaust Gaskets
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MANIFOLDKIT987
Product Information
Product Information
Exhaust manifold fitting kit.Contains manifold to head studs, gaskets and manifold to exhaust lock nuts.
Bolts and nuts are made out of Titanium. Gaskets are OEM.
Fits:
Porsche 987.1 Boxster 2005-2008
Porsche 981C Cayman 2006-2008
About kit
This kit is comprised of the following items:
1 x Exhaust manifold bolt in Titanium M8x27 for Porsche Boxster 718 / 982, Cayman 718 / 982C (TITANTORXLONG12
2 x Exhaust manifold gasket. Porsche 996 / 986 Boxster / 987 Boxster / 987C Cayman /997 (99611110755/2
2 x Exhaust manifold to cat gasket. Porsche 997 MKI / 987 Boxster / 987C Cayman (99711111300/1
6 x Exhaust Titanium Lock Nut for Bolt . Porsche 964 (99908405202T
6 x Exhaust Manifold Titanium to Catalytic Converter Bolt. Porsche 997 / 987 / 981 / 991 (N01024426/T
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Price: £161.30 inc. VAT
In Stock - 3- 5 Days Dispatch
99711111300/1KIT
Product Information
SET OF 2
This exhaust gasket is built to factory dimensions, it seals perfectly between the exhaust manifold and catalytic converter, preventing leaks and preserving smooth exhaust flow and performance.
Fits:
Porsche 997 C2 / C4 all 2005 - 2008
Porsche Cayman 987C MKI & MKII 2005 - 2012
Porsche Boxster 987 MKI & MKII 2005 - 2012
Porsche 982 Boxster GTS 4.0 2017>>
Porsche 982C Cayman GTS 4.0 2017>>
Porsche 982 Spyder 4.0L 2019>>
Porsche 982C GT4 4.0 2019>>
Diagram ref no 7
Located between the manifold / heat exchanger and the catalytic converter / exhaust pipe connection on Porsche models using the M96 / M97 / M98 engines.
Original gaskets may deteriorate over time due to heat, corrosion, and mechanical stress, allowing exhaust gases to escape. Leaks at this junction can cause noise, performance loss, and potential exposure of heat to nearby parts. An OE-Match version restores correct sealing, prevents leaks, and helps preserve the intended exhaust behaviour.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711111300
The product you are viewing cross references to these numbers
Product Information
Exhaust manifold to cat gasket.SET OF 2
This exhaust gasket is built to factory dimensions, it seals perfectly between the exhaust manifold and catalytic converter, preventing leaks and preserving smooth exhaust flow and performance.
Fits:
Porsche 997 C2 / C4 all 2005 - 2008
Porsche Cayman 987C MKI & MKII 2005 - 2012
Porsche Boxster 987 MKI & MKII 2005 - 2012
Porsche 982 Boxster GTS 4.0 2017>>
Porsche 982C Cayman GTS 4.0 2017>>
Porsche 982 Spyder 4.0L 2019>>
Porsche 982C GT4 4.0 2019>>
Diagram ref no 7
Located between the manifold / heat exchanger and the catalytic converter / exhaust pipe connection on Porsche models using the M96 / M97 / M98 engines.
Original gaskets may deteriorate over time due to heat, corrosion, and mechanical stress, allowing exhaust gases to escape. Leaks at this junction can cause noise, performance loss, and potential exposure of heat to nearby parts. An OE-Match version restores correct sealing, prevents leaks, and helps preserve the intended exhaust behaviour.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711111300
99711111300
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
2 x Exhaust manifold to cat gasket. Porsche 997 MKI / 987 Boxster / 987C Cayman (99711111300/1
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Price: £6.80 inc. VAT
In Stock - 24 Hour Dispatch
SR067
Product Information
With more and more broken exhaust bolts reported on the water-cooled engines, the headache of repairing a broken bolt is becoming epidemic. Tasks ranging from a simple exhaust system update through an engine removal, are consistently plagued by snapped, rusted, and broken exhaust manifold bolts. Rarely can an accurate removal of the broken bolt be performed with the engine in the car, and even after removal, the task is time consuming and if not done carefully can lead to a damaged head or faulty repair. STOMSKI RACING's answer to these problems is the SR067, a kit that easily, accurately, and flexibly allows you to drill out the broken bolts - with the engine still in the car- saving time and headaches. A CNC milled plate indexes precisely off the broken bolts and/or bolt holes. Using our uniquely designed Thumb Screws, the SR067 plate is locked in place (by threading a Thumb Screw over a broken bolt or by using a supplied bolt threaded through the SR067 Thumb Screw). With the included pilot drills and drill guides, the faulty bolt can be drilled out, producing a perfectly perpendicular and centered hole that if necessary can be chased with an included M8x1.25 tap.
Kit includes : anodized aluminum fixture, drill bits, tap with extension, drill jigs/guides, Thumb Screws, and hardware in a sturdy storage case.
Now also includes our SR065D drill guide.
Product Information
Exhaust bolt repair kit for Boxster / 996 / 997 Carrera & Cayman Gen1 1997- 2009 (Not GT3, GT2 or TT engines)With more and more broken exhaust bolts reported on the water-cooled engines, the headache of repairing a broken bolt is becoming epidemic. Tasks ranging from a simple exhaust system update through an engine removal, are consistently plagued by snapped, rusted, and broken exhaust manifold bolts. Rarely can an accurate removal of the broken bolt be performed with the engine in the car, and even after removal, the task is time consuming and if not done carefully can lead to a damaged head or faulty repair. STOMSKI RACING's answer to these problems is the SR067, a kit that easily, accurately, and flexibly allows you to drill out the broken bolts - with the engine still in the car- saving time and headaches. A CNC milled plate indexes precisely off the broken bolts and/or bolt holes. Using our uniquely designed Thumb Screws, the SR067 plate is locked in place (by threading a Thumb Screw over a broken bolt or by using a supplied bolt threaded through the SR067 Thumb Screw). With the included pilot drills and drill guides, the faulty bolt can be drilled out, producing a perfectly perpendicular and centered hole that if necessary can be chased with an included M8x1.25 tap.
Kit includes : anodized aluminum fixture, drill bits, tap with extension, drill jigs/guides, Thumb Screws, and hardware in a sturdy storage case.
Now also includes our SR065D drill guide.
Vehicle Group
Vehicle Group
- 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 Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Price: £404.32 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99611110755
Product Information
Fits:
Porsche 986 Boxster 1997-04
Porsche 987 MKI Boxster 2005-08
Porsche 987C MKI Cayman 2005-08
Porsche 996 3.4L C2 / C4 1998-01
Porsche 996 3.6L C2 / C4 / C4S 2002-05
Porsche 997 MKI Carrera 2005-08 (M96.05 / M97.01)
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611110755
The product you are viewing cross references to these numbers
Product Information
Exhaust manifold gasket. Sold each.Fits:
Porsche 986 Boxster 1997-04
Porsche 987 MKI Boxster 2005-08
Porsche 987C MKI Cayman 2005-08
Porsche 996 3.4L C2 / C4 1998-01
Porsche 996 3.6L C2 / C4 / C4S 2002-05
Porsche 997 MKI Carrera 2005-08 (M96.05 / M97.01)
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611110755
99611110755
230.333
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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 Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Price: £10.26 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99611110755/1
Product Information
Sold each.
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Related, superseded, cross reference or alternative numbers for comparison.
99611110755
The product you are viewing cross references to these numbers
Product Information
Exhaust manifold gasket. Sold each.
This exhaust manifold gasket is a precision replacement part built to Porsche’s original specifications. Designed to seal the connection between the exhaust manifold (or heat exchanger) and the cylinder head, it replicates the exact dimensions, materials, and performance of the factory gasket for a perfect fit.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2005 - 2008
Porsche 996 3.4L C2 / C4 1998 - 2001
Porsche 996 3.6L C2 / C4 / C4S 2002 - 2005
Porsche 997.1 Carrera 2005 - 2008 (M96.05 / M97.01)
Diagram ref no 3
This gasket ensures a gas-tight seal at one of the hottest points in the exhaust system, preventing leaks and maintaining optimal exhaust pressure. It also helps preserve engine efficiency, reduce noise, and prevent exhaust gases or heat from escaping into the engine bay.
Why replacement matters:
• Factory gaskets can deteriorate or warp over time due to extreme heat and pressure cycles
• A worn or damaged gasket may cause exhaust leaks, reduced performance, and loud exhaust noise
• Installing an OE Match replacement restores a secure seal, maintaining proper exhaust flow, back pressure, and long-term reliability.
Fits between the exhaust manifold or heat exchanger and the cylinder head.
Sold individually; two or more may be required depending on the engine configuration.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611110755
416-006
99611110755
230.333
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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 Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Price: £5.00 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99611110755/2
Product Information
Fits:
Porsche 986 Boxster 1997-04
Porsche 987 MKI Boxster 2005-08
Porsche 987C MKI Cayman 2005-08
Porsche 996 3.4L C2 / C4 1998-01
Porsche 996 3.6L C2 / C4 / C4S 2002-05
Porsche 997 MKI Carrera 2005-08 (M96.05 / M97.01)
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
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Related, superseded, cross reference or alternative numbers for comparison.
99611110755
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Product Information
Exhaust manifold gasket. 'Crushable' design. Ideal for aftermarket exhaust with flat flanges. price is eachFits:
Porsche 986 Boxster 1997-04
Porsche 987 MKI Boxster 2005-08
Porsche 987C MKI Cayman 2005-08
Porsche 996 3.4L C2 / C4 1998-01
Porsche 996 3.6L C2 / C4 / C4S 2002-05
Porsche 997 MKI Carrera 2005-08 (M96.05 / M97.01)
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611110755
99611110755
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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 Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Price: £7.50 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99711111300/1
Product Information
Sold each. Required 2 per car.
This exhaust gasket is built to factory dimensions, it seals perfectly between the exhaust manifold and catalytic converter, preventing leaks and preserving smooth exhaust flow and performance.
Fits:
Porsche 997 C2 / C4 all 2005 - 2008
Porsche Cayman 987C MKI & MKII 2005 - 2012
Porsche Boxster 987 MKI & MKII 2005 - 2012
Porsche 982 Boxster GTS 4.0 2017>>
Porsche 982C Cayman GTS 4.0 2017>>
Porsche 982 Spyder 4.0 2019>>
Porsche 982C GT4 4.0 2019>>
Diagram ref no 7
Located between the manifold / heat exchanger and the catalytic converter / exhaust pipe connection on Porsche models using the M96 / M97 / M98 engines.
Original gaskets may deteriorate over time due to heat, corrosion, and mechanical stress, allowing exhaust gases to escape. Leaks at this junction can cause noise, performance loss, and potential exposure of heat to nearby parts. An OE-Match version restores correct sealing, prevents leaks, and helps preserve the intended exhaust behaviour.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711111300
The product you are viewing cross references to these numbers
Product Information
Exhaust manifold to cat gasket. Sold each. Required 2 per car.
This exhaust gasket is built to factory dimensions, it seals perfectly between the exhaust manifold and catalytic converter, preventing leaks and preserving smooth exhaust flow and performance.
Fits:
Porsche 997 C2 / C4 all 2005 - 2008
Porsche Cayman 987C MKI & MKII 2005 - 2012
Porsche Boxster 987 MKI & MKII 2005 - 2012
Porsche 982 Boxster GTS 4.0 2017>>
Porsche 982C Cayman GTS 4.0 2017>>
Porsche 982 Spyder 4.0 2019>>
Porsche 982C GT4 4.0 2019>>
Diagram ref no 7
Located between the manifold / heat exchanger and the catalytic converter / exhaust pipe connection on Porsche models using the M96 / M97 / M98 engines.
Original gaskets may deteriorate over time due to heat, corrosion, and mechanical stress, allowing exhaust gases to escape. Leaks at this junction can cause noise, performance loss, and potential exposure of heat to nearby parts. An OE-Match version restores correct sealing, prevents leaks, and helps preserve the intended exhaust behaviour.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711111300
99711111300
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Price: £3.40 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99711111300
Product Information
Fits:
Porsche 997 C2 / C4 all 2005-08
Porsche Cayman 987C MKI & MKII 2005>>
Porsche Boxster 987 MKI & MKII 2005>>
Porsche 982 Boxster GTS 4.0 2017>>
Porsche 982C Cayman GTS 4.0 2017>>
Porsche 982 Spyder 4.0 2019>>
Porsche 982C GT4 4.0 2019>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711111300
The product you are viewing cross references to these numbers
Product Information
Exhaust manifold to cat gasket. Sold each.Fits:
Porsche 997 C2 / C4 all 2005-08
Porsche Cayman 987C MKI & MKII 2005>>
Porsche Boxster 987 MKI & MKII 2005>>
Porsche 982 Boxster GTS 4.0 2017>>
Porsche 982C Cayman GTS 4.0 2017>>
Porsche 982 Spyder 4.0 2019>>
Porsche 982C GT4 4.0 2019>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711111300
99711111300
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Price: £10.53 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99908405202/1::3
Product Information
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
Product Information
Exhaust Manifold to Catalytic Converter Nut. 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
99908405202
90091000303
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
Price: £2.15 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99908405202T::2
Product Information
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.
99908405202T
The product you are viewing cross references to these numbers
Product Information
Exhaust Manifold to Catalytic Converter M8 Nut. Made out of Titanium.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.
99908405202T
99908405202
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
Price: £6.25 inc. VAT
In Stock - 24 Hour Dispatch
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12 Month Warranty
Worldwide Delivery
DISPLAYING 1 to 10 (of 10 products)
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About Exhaust Gaskets
Exhaust Gaskets for Porsche | Precision Seal & Performance Reliability
Exhaust gaskets are crucial components in your Porsche’s exhaust system, ensuring a tight, leak-free seal between joints and flanges. They prevent exhaust gases from escaping, maintain correct back pressure, and protect nearby components from heat and harmful emissions.
At Design911, we supply a full range of exhaust gaskets designed for Porsche vehicles — from classic air-cooled 911s to high-performance modern models. Manufactured from high-temperature, corrosion-resistant materials, these gaskets deliver durability and a perfect seal under extreme conditions.
Whether you’re installing a new exhaust, replacing worn components, or upgrading for performance gains, our high-quality Porsche exhaust gaskets guarantee a reliable fit and long-lasting performance.
What Do Exhaust Gaskets Do?
Exhaust gaskets form airtight seals between the various components of the exhaust system, such as manifolds, headers, pipes, and catalytic converters. They play a vital role in maintaining system integrity, performance, and emissions control.
Core Functions:
- Seals
exhaust joints to prevent leaks and gas escape.
- Maintains
back pressure for efficient engine performance.
- Reduces exhaust noise and vibration.
- Protects against heat and gas damage.
- Ensures compliance with emissions standards.
A properly fitted gasket ensures that exhaust gases are channelled efficiently through the system — essential for power, fuel economy, and emissions control.
Why Do Exhaust Gaskets Fail?
Over time, exhaust gaskets are subjected to extreme heat, pressure, and vibration, which can lead to wear or failure.
Common Causes of Failure Include:
- Thermal
expansion and contraction causing cracks or deformation.
- Corrosion
from moisture or road salt exposure.
- Improper installation or over-tightening.
- Aging
and fatigue of gasket material.
- Exhaust vibration leading to joint loosening.
When a gasket fails, you may notice hissing or tapping noises, a burning smell, or loss of engine performance. Exhaust leaks can also increase harmful emissions and damage surrounding components.
Why Replace Your Exhaust Gaskets?
Replacing worn or leaking exhaust gaskets is essential for maintaining your Porsche’s performance, efficiency, and emissions compliance.
Key Benefits:
- Restores
proper exhaust sealing and flow efficiency.
- Reduces
exhaust noise and prevents gas leaks.
- Improves performance and throttle response.
- Prevents
damage to manifolds, sensors, and nearby parts.
- Crafted from high-grade composite or metal-reinforced materials.
- Exact-fit design for Porsche 911, Cayman, Boxster, Panamera, Macan and more.
Whether you’re rebuilding your exhaust system or performing routine maintenance, new gaskets ensure reliable sealing and long-term durability.
Highlights:
- Precision-engineered exhaust gaskets for all Porsche models.
- High-temperature, corrosion-resistant materials for durability.
- Ensures a tight, leak-free exhaust seal.
- Improves performance and emissions control.
- Perfect fit for performance and restoration projects.
- Essential for smooth, quiet, and efficient exhaust operation.
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