Original Porsche Part Genuine Porsche part 99311111353

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Related, superseded, cross reference or alternative numbers for comparison.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

The product you are viewing cross references to these numbers

Exhaust seal ring for heat exchangers.
3 per side. Price is for each.

Exhaust seal ring is designed to replicate the original gasket’s fit and durability, it ensures a gas-tight seal between the exhaust manifold or heat exchanger and the cylinder head—restoring quiet, efficient performance.

Fits:
Porsche 964 C2 / C4 / Carrera RS 1989-94
Porsche 993 Carrera / Turbo 1995-98

Diagram ref no 3

•  Seals the connection between the exhaust header / heat exchanger and the engine, preventing exhaust gas leaks
•  Helps maintain correct back-pressure, avoids losing efficiency, and ensures proper exhaust flow

Over time, the original seal ring can become brittle, corroded, or compressed, causing exhaust leaks, noise, and potential loss of performance. Installing an OE-Match ring restores a tight, gas-proof seal, helping preserve exhaust integrity and efficiency.

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Related, superseded, cross reference or alternative numbers for comparison.

99311119500

The product you are viewing cross references to these numbers

Exhaust muffler bracket



Fits:
Porsche 993 C2 / C4 1994-98 (Not turbo)

Click 'Zoom in' for large parts diagram
Diagram Ref No 3

Related reference numbers
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99311111

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Exhaust Tail pipe, universal. To be welded on the original tail pipe. Polished Stainless Steel.

Made by Dansk

Fits:
Porsche 911 Carrera 3.2L 08/1983-07/1989
Porsche 911 SC / Carrera / 930 2.7-3.0L 08/1975-07/1983

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Related, superseded, cross reference or alternative numbers for comparison.

99311114599

The product you are viewing cross references to these numbers

Exhaust Muffler Strap. Fits left or right muffler.
Bolt required 90006736202



Fits:
Porsche 993 C2/4 1994-98 not turbo

Click 'Zoom in' for large parts diagram
Diagram Ref No 1

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Related, superseded, cross reference or alternative numbers for comparison.

99311111907

The product you are viewing cross references to these numbers