Gaskets & Sets

Fits:
Porsche 996 turbo - 2000 to 2005
Porsche 996 GT3 - 1999 to 2004
Porsche 997.1 turbo - 2007 to 2009
Porsche 997 GT3 - 2007 to 2011
Porsche Carrera GT - 2003 to 2006
Porsche 918 Spyder
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970741040
The product you are viewing cross references to these numbers
- 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 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche Carrera GT
4 per car. Price is for each.

Fits:
Porsche 996 Turbo 2001-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 31
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610680102
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
MLS (Multi Layer Steel) version
Price is for each, 2 required per car

Fits
Porsche 996 Turbo to 2001 to 2005
Porsche 996 GT3 - 2000 to 2005
Porsche 996 GT3 RS - 2004
Engine Codes
M96.70 - 996 Turbo 3.6ltr /309 KW
M96.70S - 996 GT2 3.6ltr /340 KW
M96.70SL
M96.76 - 996 GT3 3.6ltr /265 KW
M96.79 - 996 GT3 RS 3.6ltr /280 KW
Please check Bore Size and Thickness before ordering
Material: MLS (Multi Layer Steel)
Compressed Thickness: .027 inch to 0.092 inch
Bore Shape: Round
Bore Size (MM): 102
Number of layers: 3
Orientation: None (fits both banks)
Gaskets are produced to order
Estimated Delivery Time: 5-6 Weeks
MLS Gaskets
The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface
finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
C4492
The product you are viewing cross references to these numbers
- 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
MLX (Multi Layer Steel Stopper) version
Price is for each, 2 required per car

Fits
Porsche 996 Turbo
Porsche 996 GT3
Porsche 996 GT2
Engine Codes
M96.70 - Turbo 3.6ltr /309 KW
M96.70S - GT2 3.6ltr /340 KW
M96.70SL - GT2 3.6ltr /340 KW
M96.76 - GT3 3.6 /265 KW
M96.79 - GT3 and GT3 RS 3.6ltr /280 KW
Please check Bore Size and Thickness before ordering
Material: MLX (Multi Layer Steel Stopper)
Compressed Thickness: .030 inch
Bore Shape: Round
Bore Size (MM): 103.5
Number of layers: 3
Orientation: None (fits both banks)
Gaskets are produced to order
Estimated Delivery Time: 5-6 Weeks
MLX Gaskets
Our MLX Gasket (Multi-Layer-Steel-Stopper) features an extra 'stopper' fold-over layer providing a torque limiting surface that prevents yielding of the combustion seals.
High temperature polymer along with embossments provide a micro seal for fluids against the head and block surface.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
C14141-040
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
MLS (Multi Layer Steel) version
Price is for each, 2 required per car

Fits
Porsche 996 Turbo
Porsche 996 GT3
Porsche 996 GT2
Engine Codes
M96.70 - Turbo 3.6ltr /309 KW
M96.70S - GT2 3.6ltr /340 KW
M96.70SL - GT2 3.6ltr /340 KW
M96.76 - GT3 3.6 /265 KW
M96.79 - GT3 and GT3 RS 3.6ltr /280 KW
Please check Bore Size and Thickness before ordering
Material: MLS (Multi Layer Steel)
Compressed Thickness: .030 inch
Bore Shape: Round
Bore Size (MM): 104.5
Number of layers: 3
Orientation: None (fits both banks)
Gaskets are produced to order
Estimated Delivery Time: 5-6 Weeks
MLS Gaskets
The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface
finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
C14076-030
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
MLS (Multi Layer Steel) version
Price is for each, 2 required per car

Fits
Porsche 996 Turbo
Porsche 996 GT3
Porsche 996 GT2
Engine Codes
M96.70 - Turbo 3.6ltr /309 KW
M96.70S - GT2 3.6ltr /340 KW
M96.70SL - GT2 3.6ltr /340 KW
M96.76 - GT3 3.6 /265 KW
M96.79 - GT3 and GT3 RS 3.6ltr /280 KW
Please check Bore Size and Thickness before ordering
Material: MLS (Multi Layer Steel)
Compressed Thickness: .040 inch
Bore Shape: Round
Bore Size (MM): 104
Number of layers: 3
Orientation: None (fits both banks)
Gaskets are produced to order
Estimated Delivery Time: 5-6 Weeks
MLS Gaskets
The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface
finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
C14077-040
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04

Fits:
Porsche 996 Turbo 2001-05
Porsche 996 GT3 2000-05
Porsche 997 Turbo 2007-09
Porsche 997 GT2 RS 2011
Porsche 997 GT3 / GT3 RS 2007-11
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610519271
The product you are viewing cross references to these numbers
- 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 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13

Fits:
Porsche 996 Turbo 2001-05
Porsche 996 GT3 2000-05
Porsche 997 Turbo 2007-09
Porsche 997 GT2 RS 2011
Porsche 997 GT3 / GT3 RS 2007-11
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610519271
The product you are viewing cross references to these numbers
- 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 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13

Fits:
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410517703
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05

Fits:
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410517703
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
Fits:
Porsche 996 Turbo/GT2 2001-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 18
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611061371
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
703141410
The product you are viewing cross references to these numbers
Engine Gaskets & Gasket Sets – Precision Sealing for Porsche Engines
Engine gaskets are vital components that ensure your Porsche’s engine operates efficiently and leak-free. Positioned between key engine surfaces such as the cylinder head, intake manifold, and oil pan, gaskets maintain a perfect seal against high temperatures, pressures, and fluids.
At Design911, we offer a comprehensive range of engine gaskets, seals, and complete gasket kits for Porsche models of every generation. Each gasket is crafted from high-quality composite, metal, or elastomer materials to withstand the extreme conditions of high-performance engines — ensuring optimal sealing, reduced oil and coolant leaks, and consistent compression.
Whether you’re rebuilding a classic 911 flat-six or servicing a modern turbocharged Porsche engine, our manufacturer-quality gaskets and complete kits guarantee reliability, performance, and peace of mind.
What Do Engine Gaskets and Gasket Sets Do?
Gaskets play a critical role in ensuring that various engine systems — combustion, lubrication, and cooling — remain properly sealed.
Core Functions:
- Prevent
leaks of oil, coolant, air, and combustion gases.
- Maintain
compression between the engine block and cylinder head.
- Ensure
efficient combustion and proper engine pressure balance.
- Protect internal components from cross-contamination of fluids.
A properly sealed engine not only improves performance and efficiency but also prevents costly long-term damage.
Why Do Gaskets Fail?
Despite their durability, gaskets naturally degrade over time due to extreme heat cycles, pressure variations, and material fatigue.
Common Causes of Gasket Failure Include:
- Overheating,
causing warping or breakdown of the gasket material.
- Improper
installation or torqueing during assembly.
- Aging
materials that harden or crack with use.
- Chemical
degradation from oil or coolant exposure.
- Uneven pressure or engine vibration, leading to micro-leaks.
Typical symptoms of gasket failure include oil or coolant leaks, reduced compression, overheating, or visible residue at gasket joints.
Why Replace with Precision-Engineered Gaskets and Kits?
Replacing worn or leaking gaskets is essential to maintain proper engine compression, prevent contamination, and restore overall reliability. Our direct-fit gasket sets and kits are designed to meet or exceed Porsche engineering standards, providing complete sealing solutions for rebuilds and maintenance.
Key Benefits:
- Restores proper sealing and compression integrity.
- Prevents oil and coolant leaks for cleaner performance.
- Enhances efficiency and reliability under load.
- Manufactured from high-grade, heat- and pressure-resistant materials.
- Available
as individual gaskets or complete kits for full rebuilds.
- Direct-fit compatibility for a wide range of Porsche models.
Our gasket sets are ideal for engine rebuilds, overhauls, and preventive maintenance, ensuring long-term dependability and peak performance.
Highlights:
- Complete Porsche engine gasket kits and individual components.
- Precision-engineered for exact sealing performance.
- Constructed from advanced composite, metal, and elastomer materials.
- Resistant to heat, pressure, and chemical exposure.
- Suitable for classic air-cooled and modern water-cooled engines.
- Ensures leak-free operation and lasting reliability.