Manifold / Headers

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 heat shield

Fits:
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08

Click 'Zoom in' for large parts diagram.
Diagram ref no 30

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98710444500

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Exhaust Manifold / Header

Fits:
Porsche 987 Boxster 2005- 08/2008
Porsche 987C Cayman 2006- 08/2008

DesignTek sports headers and 200 cell high flow cats for throaty sports car sound, but not too loud for every day driving, manufactured from extra heavy duty stainless steel, which eliminates the splitting, cracking and annoying resonance.

Coating: 40g
Cells: 200cpsi

Please note: These sport cats will make your car sound louder than with stock cats. If you have ,or intend to install sport silencers, you may find the car is a bit loo loud. We recommend to use one sport exhaust component if you are concerned about decibel levels.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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3606109874

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Exhaust Manifold / Header with 200 Cell sport CAT

Fits:
Porsche 987 Boxster 2005- 08/2008
Porsche 987C Cayman 2006- 08/2008

DesignTek sports headers and 200 cell  high flow cats for throaty sports car sound, but not too loud for every day driving, manufactured from extra heavy duty stainless steel, which eliminates the splitting, cracking and annoying resonance.

Coating: 40g
Cells: 200cpsi
Manufactured in United Kingdom

Please be aware, these sport cats will make your car sound louder than with stock cats. If you have ,or intend to install sport silencers, you may find the car is a bit loo loud. We recommend to use one sport exhaust component if you are concerned about decibel levels.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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3606109872

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Exhaust Manifold / Header with Cat Bypass

Fits:
Porsche 987 Boxster 2005- 08/2008
Porsche 987C Cayman 2006- 08/2008

Please note: This is a set of headers with catalyst bypass. After the installation of this product the emission light might come on your dash. To remove it you might need to install the lambda sensor extensions.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

Please note:
On the video below customer has fitted our headers and sport silencer with secondary cat bypasses. The car on the video has no cats at all!



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3606109875

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Titanium exhaust manifold bolt M8x27. 
Set of 12  (OE Ref: 99907358901) 

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.

Fits:
Porsche 986 Boxster 1997-2004
Porsche 987 Boxster 2005-2008
Porsche 987C Cayman 2006-2008
Porsche 996 Carrera 1998-2004
Porsche 997.1 Carrera 2005-2008
Porsche 718 (982) Boxster 2017-2021
Porsche 718 (982C) Cayman 2017-2021

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

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TITANTORXLONG12

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Exhaust Bolt - Manifold to Catalytic Converter. M8 x 30
Material:  Titanium 
Price is EACH

Fits:
Porsche 997 MKI C2 / C4 / C2S / C4S
Porsche 997 MKII C2 / C4 / C2S / C4S
Porsche 991 MKI C2 / C4 / C2S / C4S

Porsche 987 Boxster MKI
Porsche 987 Boxster MKII
Porsche 981 Boxster MKI

Porsche 987C Cayman MKI
Porsche 987C Cayman MKII
Porsche 981C Cayman MKII

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N01024426

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Exhaust Manifold to Catalytic Converter Bolt.
M8 x 30. EACH

Fits:
Porsche 997 MKI C2 / C4 / C2S / C4S
Porsche 997 MKII C2 / C4 / C2S / C4S
Porsche 991 MKI C2 / C4 / C2S / C4S

Porsche 987 Boxster MKI
Porsche 987 Boxster MKII
Porsche 981 Boxster MKI

Porsche 987C Cayman MKI
Porsche 987C Cayman MKII
Porsche 981C Cayman MKII

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N01024426

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Fits:
Porsche 987 2.7L Boxster M96.25 Engines
Porsche 987 2.7L Cayman M96.25 Engines

Diagram ref no 2



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98711310

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PLEASE NOTE:

• Used parts need to be sent to us within 30 days from the date of the invoice. Returned items outside this window may be sent back to you as we work on strict return windows with our suppliers.
• The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
• Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
• Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
• All surcharges and exchanges are subject to our terms and conditions.  

Exhaust manifold with catalytic converter. Reconditioned unit with deposit charge. Refundable on return of old unit.

Fits:
Porsche 987 Boxster 2007-08 M97.20 Engines
Porsche 987 Boxster S 2005-08 M97.21 / M97.22 Engines
Porsche 987C Cayman / Cayman S 2006-08 M97.21 / M97.22 Engines

Diagram ref no 2


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98711310

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PLEASE NOTE:

• Used parts need to be sent to us within 30 days from the date of the invoice. Returned items outside this window may be sent back to you as we work on strict return windows with our suppliers.
• The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
• Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
• Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
• All surcharges and exchanges are subject to our terms and conditions.  

Equal-length performance headers improve exhaust flow and sports car sound; Sport Headers include 200-cell HJS Sport Catalytic Converters.

FEATURES:

• Fits all Porsche 987 Boxster/Cayman vehicles (2005-2008)
• Includes German-imported 200-cell HJS Sport Catalytic Converters for maximum performance
• Optimized for maximum performance with NO check engine light, guaranteed
• Constructed from equal-length T304 stainless steel C.N.C. mandrel-bent tubing for improved torque and equalized engine pulsing
• More power and torque across the RPM band and dramatically improved sports car sound
• Composite gaskets are included for a leak proof seal
• Direct replacement for the OEM headers with no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

INSTALLATION NOTE: To ensure proper header seal, after initial heat cycle, tighten all exhaust bolts to the OEM torque specs.

DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.   

This product contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

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FSPOR987SHDR

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Screw plug for lambda hole, M18x1.5 mm.

Fits:
Porsche 924S 2.5L 1987-88 (Engine M44.09/M44.10)
Porsche 944 2.5L 1987-90 (Engine M44.09/M44.10)
Porsche 944 Turbo 2.5L 1985-91
Porsche 944S 2.5L 1986-88 (Engine M44.40)
Porsche 944 2.7L 1988-89
Porsche 944 3.0L 1988-91
Porsche 996 GT3 3.6L 1999-05
Porsche 968 3.0L 1991-95
Porsche 986 Boxster 2.5L 1996-99 (Engine M96.20)
Porsche 986 Boxster S 2.7L-3.2L 1999-04
Porsche 993 3.6L-3.8L 1993-97
Porsche 997 3.6L 2004-08 (Engine M95.05)
Porsche 997 3.8L 2004-08 (Engine M97.01)

Click 'Zoom in' for large parts diagram.
Diagram ref no 20

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90021901500

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SOUL Competition Headers. 

The SOUL Performance Competition Headers are premium aftermarket performance exhaust manifolds developed specifically for Porsche 987.1 Boxster and Cayman models manufactured between 2005 and 2008.

Fits:

• 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    

Designed for Porsche's naturally aspirated flat-six engines, these headers replace the original exhaust manifold and primary catalytic converter assemblies with a high-flow stainless steel system intended for track and competition applications.

The original Porsche exhaust manifolds incorporate catalytic converters to treat exhaust emissions. Although essential for emissions control, these components can introduce resistance to exhaust gas flow.

SOUL Performance developed its Competition Headers to provide a less restrictive exhaust path using carefully engineered primary runners, smooth-radius bends and optimised collectors.

Manufactured from 14–16 gauge T304L stainless steel tubing, the headers provide corrosion resistance and durability under demanding exhaust operating temperatures.

Each header incorporates port-matched cylinder-head flanges to provide an accurate transition between the engine's exhaust ports and the primary tubes.

The primary runners are mandrel-bent to maintain a smooth internal gas path, while the collectors are designed to improve how the individual exhaust streams combine.

This construction aims to support improved exhaust scavenging, sharper throttle response and increased performance potential.

The removal of the factory catalytic converters also produces a more pronounced exhaust sound, allowing more of the engine's naturally aspirated flat-six character to be heard.

What This Product Does:
Exhaust headers collect combustion gases from the engine's cylinder heads and direct them towards the remainder of the exhaust system.

On the Porsche 987.1 Boxster and Cayman, the original exhaust manifolds incorporate primary catalytic converters.

The SOUL Competition Headers replace these assemblies with freer-flowing stainless steel pipework.

Their main functions include:

• Collecting exhaust gases: Direct spent combustion gases away from the cylinder heads.
• Improving exhaust flow: Provide smoother passages intended to reduce unnecessary restrictions.
• Supporting exhaust scavenging: Use primary runner and collector geometry to improve exhaust gas movement.
• Reducing exhaust restriction: Remove the original primary catalytic converters from the exhaust path.
• Supporting engine performance: Help the naturally aspirated flat-six engine breathe more efficiently.
• Enhancing throttle response: Support improved engine responsiveness during acceleration.
• Increasing performance potential: Provide an exhaust configuration suitable for performance-focused engine setups.
• Enhancing exhaust sound: Produce a louder and more pronounced flat-six soundtrack.
• Reducing exhaust assembly weight: Eliminate the heavy original primary catalytic converter assemblies.
• Supporting motorsport reliability: Replace factory manifold assemblies that have experienced cracking or catalyst core damage in competition use.
• Providing corrosion resistance: Use T304L stainless steel construction.
• Maintaining downstream connection: Attach to the compatible rear exhaust system.

Why Upgrading Matters:

1. Improved Exhaust Flow

The smooth-radius stainless steel runners and optimised collectors are designed to reduce unnecessary flow restriction.

This helps exhaust gases leave the cylinder heads more efficiently.

2. Reduced Backpressure

The headers eliminate the factory primary catalytic converters, removing a source of exhaust restriction.

This makes them suitable for legally permitted competition applications where emissions requirements differ from public-road use.

3. Increased Performance Potential

More efficient exhaust flow may support improved engine breathing and stronger performance.

Actual horsepower and torque gains depend on the engine, ECU calibration, rear exhaust system and other modifications.

No specific numerical performance gain is guaranteed.

4. Improved Throttle Response

Reduced exhaust restriction may help the engine respond more readily to accelerator input.

This can be particularly valuable during high-load driving and rapid acceleration.

5. Enhanced Flat-Six Exhaust Sound

The removal of the original catalytic converters allows more exhaust sound to pass through the system.

This produces a louder, more aggressive flat-six soundtrack.

The final sound depends on the installed rear exhaust.

6. Competition-Focused Durability

SOUL developed the headers partly to address cracking and catalyst core failures reported in Spec Cayman racing.

The stainless steel construction eliminates the primary catalytic converter core as a potential failure point.

7. Potential Weight Reduction

The Competition Headers replace the original manifold and catalytic converter assemblies with stainless steel headers.

SOUL identifies weight reduction as a benefit, although an exact verified weight saving is not provided in the main product specification.

8. High-Quality Stainless Steel Construction

T304L stainless steel offers corrosion resistance and durability under repeated exhaust temperature changes.

9. Direct Bolt-On Installation

The headers are designed for direct replacement of the compatible factory manifold assemblies.

Each set is fixture-tested before dispatch and supplied with fitting instructions.

10. Motorsport Applications

The headers were accepted under published 2020 PCA Spec Cayman competition regulations.

Drivers preparing vehicles for regulated competition must check the latest championship rules before ordering.

11. Manufacturer Lifetime Warranty

SOUL Performance provides a lifetime warranty for its headers, including track use, subject to the applicable warranty terms.

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POR.9871.COH

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SOUL Long Tube Street Headers.

The SOUL Performance Long Tube Street Headers are premium aftermarket performance exhaust manifolds developed specifically for Porsche 987.1 Boxster and Cayman models manufactured between 2005 and 2008.

Fits:

• 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  

Designed for Porsche's naturally aspirated flat-six engines, these headers replace the original exhaust manifold and primary catalytic converter assemblies with a stainless steel long-tube design incorporating HJS 200-cell high-flow catalytic converters.

The factory Porsche exhaust system is engineered to balance engine performance, emissions requirements, manufacturing costs and everyday driving refinement.

SOUL Performance developed its Long Tube Street Headers to improve the efficiency of the exhaust gas path while retaining catalytic exhaust treatment.

Each header incorporates 1.75-inch primary runners, carefully developed collector geometry and merge spikes designed to create a smoother transition as exhaust gases combine.

The long-tube construction is engineered to improve exhaust scavenging and support more efficient engine breathing.

By improving the movement of exhaust gases away from the cylinder heads, the headers are intended to enhance throttle response, support engine performance and produce a more distinctive naturally aspirated flat-six soundtrack.

The system is manufactured from T304L stainless steel, offering corrosion resistance and durability under demanding exhaust temperatures.

Precision waterjet-cut mounting flanges provide accurate attachment to the cylinder heads, while the internal collector design helps minimise unnecessary turbulence.

A distinguishing feature of these headers is the use of HJS 200-cell high-flow catalytic converters.

These catalysts are designed to combine effective exhaust gas treatment with reduced flow restriction.

HJS uses a double-foil wound catalyst substrate construction intended to improve strength and durability under repeated thermal cycling.

SOUL states that these converters are capable of meeting Euro 3 emissions performance requirements and are designed to reduce the likelihood of triggering a catalyst-related engine warning light.

However, this manufacturer statement should not be interpreted as proof that the complete exhaust modification is certified or road legal for every vehicle and jurisdiction.

Each header set is manufactured and quality-checked at SOUL Performance's Willow Grove, Pennsylvania facility.

The assemblies are tested in a precision fixture to maintain fitment accuracy and prevent fabrication distortion.

The headers are designed as a direct bolt-on replacement for the corresponding factory components, with new high-grade hardware supplied for the header-to-exhaust flange connections.

Backed by SOUL Performance's lifetime warranty, subject to the manufacturer's conditions, these headers provide a performance-focused upgrade for Porsche owners seeking improved exhaust flow, sharper throttle response and a more engaging engine sound.

What This Product Does:
Exhaust headers collect spent combustion gases from the engine's cylinder heads and direct them into the downstream exhaust system.

The Porsche 987.1 Boxster and Cayman use naturally aspirated flat-six engines in which exhaust runner length, diameter and collector geometry can influence engine breathing and power delivery.

The SOUL Performance Long Tube Street Headers provide an alternative exhaust gas path using longer runners, optimised collectors and high-flow catalytic converters.

Their main functions include:

• Collecting exhaust gases: Direct gases away from the engine's cylinder heads.
• Improving exhaust flow: Provide smoother and more efficient gas passages.
• Supporting exhaust scavenging: Use long primary runners and collector geometry to encourage efficient exhaust pulse movement.
• Enhancing throttle response: Help the engine respond more effectively during acceleration.
• Supporting engine performance: Reduce unnecessary exhaust restriction.
• Improving exhaust pulse transition: Use merge spikes within the collectors to smooth gas flow.
• Retaining catalytic treatment: Incorporate HJS high-flow catalytic converters.
• Reducing catalyst restriction: Use 200-cell catalyst substrates designed for efficient gas movement.
• Enhancing exhaust sound: Produce a richer and more pronounced flat-six tone.
• Supporting high-temperature durability: Use T304L stainless steel construction.
• Maintaining downstream exhaust connections: Attach to compatible factory or aftermarket rear exhaust components.
• Preserving fitment accuracy: Use precision-cut flanges and fixture-tested construction.

Why Upgrading Matters:
1. Improved Exhaust Gas Flow

The long-tube runners and optimised collectors are designed to provide a smoother route for exhaust gases leaving the engine.

This helps reduce unnecessary restriction and supports efficient engine breathing.

2. Enhanced Throttle Response

Improved exhaust flow and scavenging can support more responsive engine behaviour.

Drivers may notice a more immediate engine response during acceleration, depending on the overall vehicle configuration.

3. Increased Performance Potential

SOUL Performance developed the header runner dimensions and collectors to help extract additional performance from the 987.1 flat-six engines.

The manufacturer specifically highlights benefits for the 3.4L engine and improvements for the 2.7L engine.

Specific horsepower or torque increases have not been established from the official product specification for every engine variant. No numerical gain should be guaranteed without appropriate dynamometer testing.

4. Enhanced Flat-Six Exhaust Sound

The header design changes the movement of exhaust pulses through the system.

This can produce a fuller, richer and more sporting engine note.

The final sound depends on the original or aftermarket rear exhaust fitted.

5. HJS High-Flow Catalytic Converters

The integrated 200-cell HJS catalysts are designed to retain exhaust gas treatment while reducing restriction.

This is a key distinction from catalyst-free competition headers.

6. High-Quality Stainless Steel Construction

The T304L stainless steel construction offers corrosion resistance and durability in high-temperature exhaust applications.

The components are designed to withstand repeated heating and cooling cycles.

7. Optimised Collector Geometry

SOUL incorporates merge spikes within the collectors to improve exhaust gas transition.

This helps reduce turbulence where the primary runners combine.

8. Precision Mounting Flanges

Waterjet-cut mounting flanges are designed to provide accurate fitment and secure attachment to the cylinder heads.

Correct flange alignment is essential for preventing exhaust leaks.

9. Direct Bolt-On Installation

The headers are developed for the original mounting arrangement of compatible Porsche 987.1 vehicles.

SOUL tests each set in a fitting fixture to maintain dimensional accuracy.

10. Long-Term Durability

The stainless steel construction and HJS catalyst design are intended to provide resistance to corrosion, thermal stress and repeated exhaust temperature changes.

11. Manufacturer Lifetime Warranty

SOUL Performance backs the headers with a lifetime warranty for street and track use, subject to its published warranty conditions.

Related reference numbers
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POR.9871.STH

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