Manifold / Headers

SOUL Long Tube Street Headers.

The SOUL Performance Long Tube Street Headers are high-performance aftermarket exhaust manifolds developed specifically for Porsche 987.2 Boxster and Cayman models manufactured between 2009 and 2012.

Fits:

• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Designed for the naturally aspirated 2.9-litre and 3.4-litre flat-six engines, these headers replace the original Porsche exhaust manifold and catalytic converter assemblies with a freer-flowing stainless steel design incorporating high-flow catalytic converters.

The factory exhaust system is engineered to balance performance, emissions control, noise regulations and everyday usability. SOUL Performance developed its Long Tube Street Headers to improve exhaust gas flow and enhance the engine's characteristic sound while retaining catalytic exhaust treatment.

Each header features 2-inch primary runners, carefully formed bends, port-matched mounting flanges and optimised exhaust collectors.

The long-tube design is intended to help exhaust gases leave the cylinder heads more efficiently, supporting improved engine breathing and throttle response.

The headers are manufactured from T304L stainless steel, providing corrosion resistance, strength and durability under demanding exhaust operating temperatures.

Large-diameter, free-flowing catalytic converters are incorporated into the assemblies to reduce exhaust restriction compared with the manufacturer's intended factory baseline while retaining a catalytic treatment stage.

Unlike catalyst-free Competition Headers, the SOUL Long Tube Street Headers maintain catalytic converters within the exhaust system.

They are specifically developed for the Porsche 987.2 platform, with the primary runner diameter and collector geometry selected to complement the performance characteristics of both the 2.9L and 3.4L engines.

SOUL Performance reports dynamometer testing on its project Cayman S equipped with PDK transmission and a compatible SOUL Valved Exhaust System.

The manufacturer recorded improvements in wheel horsepower and torque around 4,100 RPM, although the figures published in different sections of its product page vary.

In addition to improved exhaust flow, the headers are designed to produce a stronger, fuller and more distinctive flat-six exhaust note.

The final sound depends on the installed rear exhaust system, engine specification and driving conditions.

Each header assembly is quality-checked, tested in an installation fixture and supplied with fitting instructions.

New high-grade hardware for the header-to-exhaust flange connections is included.

SOUL Performance also offers an optional copper exhaust header gasket set for installation.

The system is designed as a direct bolt-on replacement for the compatible original exhaust manifold arrangement, without requiring bespoke fabrication in a standard installation.

Backed by the SOUL Performance lifetime warranty, subject to the manufacturer's conditions, these headers provide an attractive upgrade for enthusiasts seeking improved exhaust flow, enhanced throttle response and a more engaging engine soundtrack.

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.

The Porsche 987.2 Boxster and Cayman use naturally aspirated flat-six engines, where efficient exhaust gas movement is important for engine breathing and power delivery.

The SOUL Long Tube Street Headers replace the original manifold and catalytic converter assemblies with longer primary runners and improved collector geometry.

Their main functions include:

• Collecting exhaust gases: Direct gases away from the engine's cylinder heads.
• Improving exhaust flow: Provide smoother internal passages to reduce unnecessary restriction.
• Supporting exhaust scavenging: Use runner length and collector design to encourage efficient exhaust pulse movement.
• Enhancing throttle response: Support improved engine responsiveness during acceleration.
• Increasing performance potential: Help the engine breathe more efficiently, particularly under load.
• Supporting mid-range performance: Provide an exhaust arrangement developed to improve torque delivery.
• Enhancing flat-six sound: Produce a fuller and more pronounced exhaust note.
• Retaining catalytic treatment: Pass exhaust gases through integrated high-flow catalytic converters.
• Reducing exhaust restriction: Use large-diameter catalysts and smooth-flowing tubing.
• Maintaining downstream connections: Connect to a compatible rear exhaust system.
• Providing durable construction: Use corrosion-resistant T304L stainless steel.
• Supporting performance modifications: Complement compatible rear exhaust upgrades and appropriate engine tuning.
  

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

POR.9872.STH

The product you are viewing cross references to these numbers

High performance stud + nut kits for the exhaust manifold to cylinder head for Porsche. Using titanium and Inconel alloy studs, aerospace lock nuts, and a well-thought and balanced combination of metals and plating/coatings, our fasteners will perform better than the traditional fastener. They will never oxidize, and hence will unscrew easily when required.

Novel ultra-high-performance product
• Use of Titanium Ti6Al4V technology
• Extreme perceived quality

Contains 12 x Studs, Nuts & Washers

Fits:
Porsche 911 1965-77
Porsche 964 (none Turbo)
Porsche 993 All
Porsche 996 (none Turbo)
Porsche 997 (none Turbo)
Porsche 986 All
Porsche 987 All
Porsche 718 4 Cyl Turbo

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

SL-Ti-121

The product you are viewing cross references to these numbers

High performance stud + nut kits for the exhaust manifold to cylinder head for Porsche. Using titanium and Inconel alloy studs, aerospace lock nuts, and a well-thought and balanced combination of metals and plating/coatings, our fasteners will perform better than the traditional fastener. They will never oxidize, and hence will unscrew easily when required.

Novel ultra-high-performance product
• Use of Titanium Ti6Al4V technology
• Extreme perceived quality

Contains 18 x Studs, Nuts & Washers

Fits:
Porsche 996 Turbo / GT3 / GT2
Porsche 997 Turbo / GT3 / GT2
Porsche 997.2 ALL
Porsche 991 ALL
Porsche 992 ALL
Porsche 987 2009-12
Porsche 981
Porsche 718 GT4

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

SL-TI-18

The product you are viewing cross references to these numbers