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Brackets / Clamps / Straps
By OE Match
- 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
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Related, superseded, cross reference or alternative numbers for comparison.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
The product you are viewing cross references to these numbers
OEMatch Brackets / Clamps / Straps — Fit, Function, Confidence
Small mounting parts that secure and support Porsche exhaust systems, engineered to control alignment, absorb vibration and reduce unwanted noise. Correct fixing points and appropriate materials help preserve joint seals, prevent sagging and limit transmission of engine and road vibration into the cabin or bodywork.
Available Types
- Exhaust mounting brackets and hangers for chassis attachment
- Stainless-steel straps and clamp assemblies for pipe and silencer joints
- Rubber-insulated hangers, mounting bolts and dedicated fasteners
Understanding OEMatch Brackets / Clamps / Straps
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original brackets, clamps and straps.
OE (Original Equipment) refers to parts matching original specifications for the brackets, clamps and straps and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM brackets, clamps and straps engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
OEMatch provides a broad range of Porsche-fitment mounting hardware and related fasteners, drawing on a catalogue that documents thousands of part numbers and cross-references. The selection covers common exhaust hangers, dedicated straps and clamp sizes used across classic and modern Porsche models, with ongoing development to extend coverage.
Benefits Include
- Restores correct exhaust alignment to protect joints and flanges
- Reduces rattles and vibration transmitted to the body
- Corrosion-resistant finishes extend service life in exposed locations
Why Brackets / Clamps / Straps Wear and Fail
- Corrosion from road salt and moisture leading to metal loss and weakening
- Metal fatigue and heat cycling causing cracks, deformation or stretched straps
- Deterioration of rubber mounts and isolators that lose damping properties
The Importance of Replacing with OEMatch Brackets / Clamps / Straps
Replacing worn or damaged mounting hardware keeps a Porsche exhaust correctly supported and aligned, preventing additional stress on pipes, joints and silencers. Correctly chosen brackets and clamps reduce the risk of leaks, limit noise and vibration, and make subsequent maintenance or repairs simpler and less intrusive. For restoration or routine maintenance, renewed mounting parts help preserve the overall refinement expected from Porsche models.
Advantages
- Direct-fit designs selected for Porsche applications to match original mounting points and clearances
- Materials and finishes chosen to resist heat and corrosion in exhaust environments
- Wide choice of shapes and fixings to suit restoration and repair needs
