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bracket Genuine Porsche part 99311111484

Code: 99311111484

Genuine Porsche part

bracket

The product code 99311111484 was also found on these diagrams

202-15 - bracket

Fuel System, Exhaust System 993 (911) (1994-1998)

exhaust system muffler catalytic converter 993 TURBO 1994-98

Additional information:

• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.

Before purchasing thoroughly check part to confirm compatibility.

Related products

Exhaust muffler strap. Porsche 993

99311111907/1

Product Information

Exhaust muffler strap
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Related, superseded, cross reference or alternative numbers for comparison.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

99311111907

The product you are viewing cross references to these numbers

Exhaust seal ring for heat exchangers. Porsche 964 / 993

99311119500/1

Product Information

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

99311119500

71-24953-30

712495330

The product you are viewing cross references to these numbers

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bracket Genuine Porsche part 99311111484