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Porsche
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Taycan (9J1) MK1 2020-2024
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9J1.1 Taycan Turbo S Sport Turismo 2020-24
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Exhausts
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Brackets / Clamps / Straps
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Exhaust muffler clamp. Porsche 997 GT3 / 991 GT3 / Carrera GT ❭ 99711133690
Exhaust muffler clamp. Porsche 997 GT3 / 991 GT3 / Carrera GT - 99711133690
99711133690/1
Vehicle Group
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
Information
Front muffler clamp (OE part reference 997.111.336.90) — used to secure the front/centre muffler sections on 911 GT3 / GT3 RS and compatible Porsche 997 / 991 fitments. Built to the factory dimensions for a leak-free connection and correct exhaust alignment.
Price is Each
Fits:
Porsche Carrera GT 2004 - 2006
Porsche 997 GT3 2007 - 2009
Porsche 997 GT3 / GT3 RS / GT3 RS 4.0 2010-11
Porsche 991 GT3 / GT3 RS 2014-18
Porsche 991 R 2016
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711133690
The product you are viewing cross references to these numbers
Price is Each
Fits:
Porsche Carrera GT 2004 - 2006
Porsche 997 GT3 2007 - 2009
Porsche 997 GT3 / GT3 RS / GT3 RS 4.0 2010-11
Porsche 991 GT3 / GT3 RS 2014-18
Porsche 991 R 2016
Diagram ref no 5
Why Replace Your Exhaust Clamp
- Restore a perfect, leak-free seal
- Over time, exhaust clamps can deform, corrode, or lose their clamping strength. Replacing the clamp ensures a secure joint between muffler sections, preventing exhaust leaks, restoring proper back pressure, and maintaining optimal engine performance.
- Eliminate rattles and vibration noise
- Worn or loose clamps are a common cause of rattles, buzzing, or vibration noises from the rear underside of 997 and 991 models. Installing a new clamp is often one of the quickest and most cost-effective ways to eliminate these irritating sounds.
- Factory specifications fitment for performance models
Common Issues and Failure Modes
- Corrosion and rust
- Exhaust clamps and fasteners are exposed to heat, moisture, and road salt. Over time, this can lead to corrosion or seizure, reducing clamping force and risking exhaust leaks.
- Clamp fatigue or deformation
- Repeated heat cycles and vibration can cause the clamp sleeve or bolt to distort, leading to a loose connection and exhaust blow-by.
- Incorrect fitment or short sleeves
- Noise from over-tightening
- Applying excessive clamping force can alter vibration characteristics and introduce new noises. Always follow correct installation torque and alignment procedures.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711133690
99711133690
The product you are viewing cross references to these numbers
Price: €148.75
In stock
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