Exhaust Gaskets

Exhaust bolt repair kit for Porsche DFI Engines on 911/997/991/ Boxster & Cayman (9A1) 2009-Onwards



Holy broken bolts Batman! Even the latest generation of DFI (9A1) heads on the water-cooled engines are reporting broken exhaust bolts. 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 SR069, 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 SR069 plate is locked in place (by threading a Thumb Screw over a broken bolt or by using a supplied bolt threaded through the SR069 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. Also includes our SR065D drill guide.

Exhaust gasket manifold to muffler.



Fits:
Porsche 981 Boxster 2012>>
Porsche 981 Boxster Spyder 2016>>
Porsche 981 Cayman 2014>>
Porsche 981 Cayman GT4 2016>>

Porsche 982 Boxster 2017>>
Porsche 982C Cayman 2017>>

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Diagram ref no 3

Price is for each.

Related reference numbers
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982251263

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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.

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)

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Diagram ref no 3

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99611110755

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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

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Exhaust manifold gasket. 'Crushable' design. Ideal for aftermarket exhaust with flat flanges. price is 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

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Exhaust manifold gasket. Sold each.



Fits:
Porsche 987 MKII Boxster 2009>>
Porsche 987C MKII Cayman 2009>>
Porsche 981 Boxster 2012>>
Porsche 987C Cayman 2014>>
Porsche 997 MKII Carrera 3.6L / 3.8L 2009>>
Porsche 997 MKII Turbo 2009>>
Porsche 991.1 Carrera   2012>>
Porsche 991 Turbo 2014-2020

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Diagram ref no 2.

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Related, superseded, cross reference or alternative numbers for comparison.

99711110731

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Exhaust manifold gasket. Sold each.



Fits:
Porsche 987 MKII Boxster 2009>>
Porsche 987C MKII Cayman 2009>>
Porsche 981 Boxster 2012>>
Porsche 987C Cayman 2014>>
Porsche 997 MKII Carrera 3.6L / 3.8L 2009>>
Porsche 997 MKII Turbo 2009>>
Porsche 991.1 Carrera   2012>>
Porsche 991 Turbo 2014-2020

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Diagram ref no 2.

Related reference numbers
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99711110731

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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
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99711111300

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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>>

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Diagram ref no 7

Related reference numbers
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99711111300

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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
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99908405202

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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

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99908405202T

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