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Exhaust Gaskets
By OE Match
- 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 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) TURBO S 1994-97
3 required per side
This exhaust seal ring is designed for Porsche 964 and 993 models, replicating the original gasket’s fit, function, and durability. It provides a gas-tight seal between the exhaust manifold or heat exchanger and the cylinder head, restoring quiet, leak-free, and efficient exhaust performance.
Fits:
Porsche 964 C2 / C4 / Carrera RS 1989-94
Porsche 993 Carrera / Turbo 1995-98
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311119500
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
The OE MATCH Exhaust Gasket, From Cross Over Pipe to Catalyst is a high-quality replacement sealing gasket designed to create a secure, gas-tight connection between the exhaust crossover pipe and catalytic converter. Manufactured to OE specifications, this gasket ensures proper sealing of the exhaust system, preventing leaks while maintaining optimal exhaust flow, engine performance, and emissions control.
Fits:
- 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
Constructed from durable, heat-resistant materials, the gasket is engineered to withstand the extreme temperatures, pressure fluctuations, and vibration encountered within the exhaust system. It is an essential replacement component whenever the catalytic converter or crossover pipe is removed, serviced, or replaced.
What This Product Does:
- Creates a gas-tight seal between the crossover pipe and catalytic converter
- Prevents exhaust gas leaks at exhaust flange connections
- Maintains proper exhaust flow and backpressure characteristics
- Supports engine performance and fuel efficiency
- Helps reduce exhaust noise caused by leaking joints
- Protects emissions system efficiency and catalyst operation
Symptoms Of Wear Or Failure:
- Exhaust blowing, hissing, or ticking noises
- Visible exhaust gas leaks around the catalytic converter connection
- Soot or carbon deposits around the flange area
- Exhaust fumes or odours around the vehicle
- Increased exhaust noise levels
- Reduced exhaust system efficiency
- Potential emissions-related issues or test failures
- Difficulty achieving a proper seal during exhaust repairs
Why Replacement Matters:
- Restores a reliable gas-tight exhaust seal
- Prevents exhaust leaks and unwanted noise
- Maintains correct exhaust flow and system efficiency
- Supports engine performance and emissions control
- Reduces the risk of exhaust fumes escaping from the system
- Protects nearby components from hot exhaust gases
- Helps maintain catalytic converter effectiveness
- Ensures long-term reliability and durability of the exhaust system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96411119800
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 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) TURBO S 1994-97
Exhaust Crush Sealing Ring for Heat Exchangers
Sold each - 6 required per car
Restore a gas-tight seal to your Porsche exhaust system with
this OE Match Exhaust Crush Sealing Ring,
designed for the Porsche 964 and Porsche 993 heat exchanger assembly.
Manufactured to original equipment specifications, this premium exhaust sealing
ring compresses during installation to create a secure seal between exhaust
components, preventing exhaust gas leaks while maintaining optimum engine
performance.
Fits:
- 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 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) TURBO S 1994-97
Diagram ref no 3
Whether you're replacing heat exchangers, installing a new silencer or carrying out engine or exhaust maintenance, fitting new crush sealing rings is essential to ensure a reliable and leak-free exhaust system.
What Does the Exhaust Crush Sealing Ring Do?
The exhaust crush sealing ring is installed between mating exhaust components where it forms a high-temperature gas seal once compressed during assembly.
Its primary functions include:
- Creating a gas-tight seal between exhaust components.
- Preventing exhaust gas leaks.
- Maintaining correct exhaust back pressure.
- Supporting optimum engine performance.
- Reducing unwanted exhaust noise.
- Helping protect surrounding components from escaping hot exhaust gases.
Because the sealing ring is designed to deform during installation, it provides a highly effective seal capable of withstanding extreme exhaust temperatures.
Why Do Exhaust Crush Sealing Rings Fail?
Exhaust sealing rings operate under constant exposure to
high temperatures and pressure. Common causes of failure include:
- Compression during initial installation.
- Reuse after previous removal.
- Continuous heat cycling.
- Corrosion from moisture and condensation.
- Exhaust system movement.
- Age-related deterioration.
Once compressed, the sealing ring cannot return to its original shape, making it unsuitable for reuse.
When Should the Exhaust Crush Sealing Ring Be Replaced?
Replacement is recommended whenever:
- Heat exchangers are removed.
- Exhaust silencers are replaced.
- Exhaust manifolds are dismantled.
- Exhaust leaks are detected.
- Engine rebuilds are carried out.
- Any exhaust joint using the sealing ring is disturbed.
Most Porsche specialists recommend fitting new crush sealing rings every time the exhaust system is dismantled to guarantee a proper seal and avoid future exhaust leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311119500
The product you are viewing cross references to these numbers
OEMatch Exhaust Gaskets — Flow, Response, Refinement
Exhaust gaskets form essential seals within Porsche exhaust systems. OEMatch supplies a selection of exhaust gaskets for Porsche models to restore sealing between manifolds, headers, pipes and catalytic converters. Choosing the correct profile and material helps prevent leaks, reduce noise and protect nearby components from heat damage.
Available Types
- Manifold-to-downpipe flange gaskets
- Header and collector gaskets
- Catalytic converter and connector gaskets
- Ring and multi-layer steel (MLS) exhaust seals
Understanding OEMatch Exhaust Gaskets
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original exhaust gaskets.
OE (Original Equipment) refers to parts matching original specifications for the exhaust gaskets and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM exhaust gaskets engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Exhaust gaskets create airtight seals at joints and flanges to control gas flow and maintain correct back pressure. Materials range from composite fibres and graphite to metal-reinforced and multi-layer steel constructions chosen for temperature resistance and corrosion durability. Correct sealing supports sensor operation, emissions control and engine efficiency while limiting exhaust noise and vibration.
Benefits Include
- Tight sealing to prevent exhaust leaks and maintain back pressure
- Reduced exhaust noise and vibration
- Protection of nearby components from heat and corrosive gases
Why Exhaust Gaskets Wear and Fail
- Repeated thermal expansion and contraction leading to cracking or deformation
- Corrosion from moisture and road salt attacking metal layers
- Vibration and joint movement causing material fatigue or loss of compression
- Incorrect installation or uneven flange contact causing leaks
The Importance of Replacing with OEMatch Exhaust Gaskets
Replacing worn or damaged gaskets restores proper exhaust sealing for Porsche models and helps retain engine performance, emissions control and component life. Many owners search for genuine or OEM exhaust gaskets; these are direct-fit alternatives designed to match the original form, fit and function. Selecting the correct gasket type for the exhaust joint reduces the risk of recurring leaks and downstream damage to manifolds, sensors and catalytic converters.
Advantages
- A choice of materials and profiles matched to common Porsche flange types
- Options suited to restoration, routine maintenance or higher-temperature applications
- Clear identification by application to help confirm fit for model and engine
