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Porsche // 993 (911) (1994-1998) // 993 (911) C4 1994-97
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- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Cross Over Pipe Exhaust Sealing Ring Washer
Restore secure exhaust sealing with Cross Over Pipe Exhaust
Sealing Ring Washer, designed for Porsche 911 models produced from
1975 to 1989. This sealing washer is used on the cross over pipe section of the
exhaust system, helping create a tight, reliable seal between exhaust
components.
Fits:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Diagram ref no 12
The cross over pipe is exposed to high temperatures, vibration and exhaust gas pressure. The sealing ring washer helps maintain correct joint compression, reducing the risk of exhaust leaks, rattles and poor system alignment. When worn or damaged, the washer may no longer seal effectively, allowing exhaust gases to escape.
Replacing this washer during exhaust repairs, cross over pipe removal or restoration work helps ensure a professional, leak-free installation.
What Does an Exhaust Sealing Ring Washer Do?
An exhaust sealing ring washer supports the sealing joint between exhaust components. It helps maintain clamping pressure and assists the sealing ring or joint in preventing exhaust gases from escaping.
A correctly fitted sealing washer helps provide:
- Secure exhaust joint sealing
- Reduced risk of exhaust leaks
- Correct cross over pipe fitment
- Improved exhaust system stability
- Better gasket and sealing ring performance
- Reduced vibration and exhaust noise
- Reliable long-term exhaust operation
Symptoms of Wear or Failure
Common signs that an exhaust sealing washer may need
replacement include:
- Exhaust blowing noises
- Soot marks around exhaust joints
- Increased exhaust noise
- Rattling from the cross over pipe area
- Poor sealing after exhaust refitting
- Corrosion or distortion of the washer
- Loose or uneven exhaust joint compression
- Exhaust fumes around the rear of the vehicle
Why Replacement Matters
A worn or damaged sealing washer can compromise the exhaust joint, leading to leaks, vibration and premature wear of surrounding exhaust parts.
Replacement helps:
- Restore correct exhaust sealing
- Prevent exhaust gas leaks
- Improve exhaust system reliability
- Reduce unwanted noise and vibration
- Maintain proper exhaust flow
- Protect connected exhaust components
- Improve repair and restoration quality
- Support long-term durability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111118802
The product you are viewing cross references to these numbers
- 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
The OE MATCH Exhaust O-Ring is a high-quality replacement sealing ring designed to create a secure, gas-tight connection between specific exhaust system components. Engineered to OE specifications, this exhaust O-ring helps prevent exhaust gas leaks while accommodating thermal expansion, vibration, and movement within the exhaust system.
Fits:
- 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
Manufactured from heat-resistant materials capable of withstanding the extreme temperatures and harsh operating conditions found in exhaust applications, this sealing ring plays an important role in maintaining exhaust system integrity, reducing noise, and ensuring efficient exhaust flow.
What This Product Does:
- Provides a gas-tight seal between exhaust system components
- Prevents exhaust gas leaks at connection points
- Accommodates exhaust system expansion and vibration
- Maintains proper exhaust flow and system efficiency
- Helps reduce exhaust noise caused by leaking joints
- Supports reliable operation of the exhaust system
Symptoms Of Wear Or Failure:
- Exhaust blowing, hissing, or ticking noises
- Visible exhaust gas leaks around exhaust joints
- Soot or carbon deposits near sealing surfaces
- Exhaust fumes or odours around the vehicle
- Increased exhaust noise levels
- Reduced exhaust system efficiency
- Difficulty maintaining a proper seal after exhaust repairs
- Potential emissions issues caused by exhaust leaks
Why Replacement Matters:
- Restores a secure gas-tight exhaust seal
- Prevents exhaust leaks and unwanted noise
- Maintains correct exhaust flow characteristics
- Helps support engine performance and efficiency
- Reduces the risk of exhaust fumes escaping from the system
- Protects surrounding components from hot exhaust gases
- Supports emissions system effectiveness
- Ensures long-term durability and reliability of the exhaust system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811124607
The product you are viewing cross references to these numbers
- 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
Replacement heat sheild for left or right rear box.
Genuine Porsche product.
Fits:
Porsche 993 C2/4 1994-98 not turbo
Click 'Zoom in' for large parts diagram.
Diagram Ref No 30
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99321121
The product you are viewing cross references to these numbers
- 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
Replacement heat shield for Cat.
Fits:
Porsche 993 C2/4 1994-98 not turbo
Click 'Zoom in' for large parts diagram.
Diagram Ref No 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99321121402
The product you are viewing cross references to these numbers
- 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
This OE Match exhaust muffler strap is a direct replacement for the original Porsche component used in the 993 exhaust system. It is designed to wrap around and support the rear silencer, securing it firmly to the vehicle’s mounting brackets. It fits either left or right side silencers and is commonly used in pairs, with one strap per muffler. Additional hardware (bolt) may be required: 90006736201
Sold individually
Fits:
Porsche 993 C2 / C4 1994 - 1998
* not turbo models
Diagram Ref No 1
The muffler strap holds the exhaust silencer securely in place, preventing movement or sagging. It helps maintain proper exhaust alignment while reducing vibration and stress on exhaust joints and mounting points.
Function
• Secures the exhaust muffler to the vehicle chassis
• Maintains correct exhaust alignment and positioning
• Absorbs and reduces vibration from exhaust system
• Prevents excessive movement or sagging of the silencer
• Supports long-term durability of exhaust components
Exhaust straps are exposed to constant heat cycles, moisture, and road debris, which can lead to corrosion or fatigue over time. A worn or broken strap can cause the muffler to loosen or misalign, leading to noise, vibration, or damage to the exhaust system. Replacing it ensures secure mounting and preserves exhaust system integrity.
When to replace
• Visible corrosion, cracking, or fatigue
• Loose or sagging exhaust muffler
• Increased vibration or rattling noise
• During exhaust repair or replacement
• Missing or damaged mounting strap
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311111907
The product you are viewing cross references to these numbers