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Your Vehicle // Porsche // 992 (911) MK1 2019-2024 // 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
Brackets / Clamps / Straps
Genuine Porsche V-band exhaust clamp for GT3, GT3 RS and Speedster with 4.0L engines. Please choose either Left or right, it fastens an adjoining exhaust connection.
Fits
- Porsche 991 GT3/RS/GT-Speedster 2014-2021
- Porsche 992 GT3/RS/ST 2021-2025
- Porsche 992 GT3 2025>>
Check fitment for your specific vehicle (model, year, engine) before ordering.
Diagram Ref no 19 & 20
What This Product Does
The V-band fastening draws the mating exhaust components together around their joint. Clamping pressure helps hold the connection in position and supports sealing when the adjoining surfaces and associated seal are serviceable.
Functions
- Fastens the mating exhaust connection.
- Helps retain alignment at the joint.
- Applies circumferential pressure to support sealing.
Technical Details
- Component identification: exhaust clamp.
- Fastening type: V-band.
- Supplied diagram quantity: 1 in each referenced assembly.
Symptoms of Fault
- Ticking or blowing audible near the connection.
- Black soot traces surrounding the joint.
- A clamp that cannot tighten correctly.
- Joint movement, uneven positioning or rattles.
- Noticeable exhaust odour around the affected connection.
These signs warrant inspection; they do not establish that the clamp alone is responsible.
Why Replacement Matters
Corrosion, deformation or damaged fastening hardware can reduce the clamp's ability to grip. Renewing a defective clamp helps re-establish the intended fastening arrangement. Before reassembly, examine the adjoining flanges, sealing components and supporting hardware: fitting a new clamp will not correct damaged mating surfaces or poor alignment.
FAQs
Is the component genuine Porsche?
The supplied product information identifies it as genuine Porsche, reference 9GT251616B (left) & 9GT251616C (Right)
Does the diagram quantity describe a complete kit?
No. The quantity identifies one clamp in each referenced assembly; it does not indicate that neighbouring components are included.
What needs checking before installation?
Inspect the connection surfaces, seal and surrounding supports for damage or corrosion. Follow the applicable Porsche repair instructions for assembly and tightening.
How can I verify the application?
Compare the listed models and engine specification with your vehicle, then confirm reference 9GT251616B & 9GT251616C against its VIN where necessary.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9GT251616
The product you are viewing cross references to these numbers
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.2 GT3 / Touring / S/C 2025>>
Exhaust Mounting Brackets, Straps & Clamps – Secure, Silent & Strong
A Porsche exhaust system relies on more than just pipes and silencers — it’s held together by a network of mounting brackets, straps, and clamps that keep everything securely in place. These essential components absorb vibration, maintain correct alignment, and prevent stress or damage to exhaust pipes and mufflers.
At Design911, we stock a full range of exhaust mounting hardware, including brackets, hangers, straps, clamps, gaskets, and fasteners, all designed for long-lasting durability and a perfect fit. Built from high-strength stainless steel and corrosion-resistant materials, these components ensure your exhaust system remains properly supported and free from unwanted noise or movement.
Whether you’re performing a full exhaust replacement or a minor repair, replacing worn or rusted mounting hardware restores proper fitment and protects your Porsche’s exhaust from damage caused by vibration or misalignment.
What Do Exhaust Mounting Brackets, Straps & Clamps Do?
These small but vital parts provide the backbone for your exhaust system’s stability and integrity.
Core Functions:
- Secure
the exhaust system to the vehicle chassis.
- Maintain
correct alignment to prevent strain on joints and flanges.
- Absorb
engine vibration to reduce stress and cracking.
- Ensure
leak-free connections between pipes and silencers.
- Prevent rattling and unwanted noise during acceleration and cornering.
Without properly functioning brackets and clamps, your exhaust can sag, vibrate, or even detach — risking costly damage and performance loss.
Why Do Exhaust Mounts and Clamps Fail?
Constant heat, vibration, and exposure to the elements make exhaust mounting components prone to wear over time.
Common Causes of Failure Include:
- Corrosion
or rust from road salt and moisture.
- Metal
fatigue caused by heat cycling and vibration.
- Cracked
or stretched straps from repeated stress.
- Loose
or broken clamps leading to exhaust leaks.
- Rubber mount deterioration resulting in noise or exhaust movement.
Failure of these components can lead to exhaust misalignment, rattling, leaks, or premature pipe damage — issues that worsen quickly if ignored.
Why Replace Components?
Replacing worn or damaged exhaust mounting hardware ensures your Porsche’s exhaust system remains stable, quiet, and free-flowing.
Key Benefits:
- Restores exhaust alignment and fitment.
- Prevents damage to mufflers, pipes, and joints.
- Eliminates rattling, vibration, and leaks.
- Durable stainless steel and heat-resistant construction.
- Direct-fit
compatibility for all Porsche models, classic and modern.
- Ideal for maintenance, restoration, or performance upgrades.
A secure exhaust system not only improves comfort and performance but also extends the life of other components — ensuring your Porsche remains refined and reliable.
Highlights:
- High-quality exhaust brackets, clamps, and mounting straps.
- Precision-engineered for Porsche fitment and durability.
- Prevents vibration, movement, and exhaust leaks.
- Made from corrosion-resistant stainless steel.
- Perfect for restorations or exhaust maintenance.
- Ensures long-term stability and quiet operation.