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Exhaust sleeve catalytic converter to u-bend. Porsche Boxster 986 ❭ 99611111001
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
OE Match exhaust clamping sleeve / exhaust clamp designed to secure and join exhaust components in the Porsche Boxster 986 (1997–2004) exhaust system. It functions as a durable connector between the catalytic converter and U-bend / silencer pipes, helping maintain a tight exhaust joint.
Sold as: Single clamp (two may be required per complete joint).
Fits:
Porsche 986 Boxster 1997 - 2004
Diagram ref no 15
The exhaust clamping sleeve secures two sections of the exhaust - typically where the catalytic converter outlet meets the U-bend or silencer pipe. It ensures a firm, vibration-resistant connection that prevents exhaust leakage, reduces noise, and supports proper exhaust routing. A good clamp helps the exhaust stay aligned under heat expansion and road vibration, reducing stress on nearby hangers and components.
Function:
• Joins exhaust sections securely (catalytic converter to U-bend/silencer)
• Prevents exhaust leaks by maintaining a tight pipe connection
• Absorbs movement and heat expansion without loosening
• Supports proper alignment of the exhaust system under operating loads.
Without a sound clamp, exhaust joints can leak hot gases, which leads to reduced performance, unwanted noise, and possible component wear.
Exhaust clamps live in a high-heat, corrosive environment, and over time the original sleeve can:
• Corrode or rust, reducing clamp effectiveness
• Lose clamping force from heat cycling
• Allow exhaust leaks at pipe connections
• Cause excess exhaust noise or vibration.
Replacing worn or damaged clamps with OE Match units helps ensure a tight seal, prevents exhaust gas escape, and protects other exhaust components from undue movement or stress.
When to replace. Replace this exhaust clamp when:
• You remove or refit the exhaust system (e.g., catalytic converter or silencer)
• The existing clamp is corroded, bent, or stretched
• You notice exhaust leaks, noise, or vibration at the joint
• Replacement or servicing of exhaust components causes fitment issues
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611111001
The product you are viewing cross references to these numbers
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
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- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
This Genuine Porsche exhaust tailpipe clamp is an OE replacement clamp for the Porsche 718 Boxster and Cayman 982 exhaust tailpipe assembly. It secures the tailpipe section, helps maintain correct rear exhaust alignment and is recommended when replacing, removing or repairing exhaust components.
Supplied individually, 2 required per vehicle

Fits:
Porsche 718 (982) Boxster 2.0L / 2.5L 2017 >>
Porsche 718C (982C) Cayman 2.0L / 2.5L 2017 >>
* For cars WITH and WITHOUT Sport Exhaust
Diagram ref no 32
This OE clamp is used to secure the exhaust tailpipe section in place, helping maintain correct alignment, sealing and support within the rear exhaust system.
Functions
• Secures the exhaust tailpipe connection in the correct position
• Helps maintain proper tailpipe alignment at the rear of the vehicle
• Supports a tight and stable exhaust joint
• Helps reduce exhaust movement, vibration and rattling
• Assists in keeping the exhaust outlet correctly positioned in the rear bumper area
• Suitable for cars with or without Porsche Sports Exhaust on the listed applications
The exhaust tailpipe clamp is exposed to heat, road dirt, moisture and corrosion. Over time, the clamp can weaken, rust, seize or lose clamping force, which may allow exhaust movement, poor alignment or rattling from the rear exhaust section. Replacing a worn or damaged clamp with a Genuine Porsche OE part helps restore the correct fit, support and factory-quality connection.
When to Replace
• This Part When the original clamp is corroded, cracked or damaged
• When the tailpipe section is loose or misaligned
• If there is a rattle or vibration from the rear exhaust area
• During tailpipe, silencer or rear exhaust removal/refitting
• If the clamp bolt is seized or cannot be reused
• When carrying out exhaust repairs or restoration work.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982251189
The product you are viewing cross references to these numbers
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
This OE Match exhaust tailpipe clamp is a direct replacement clamp used on the exhaust tailpipe assembly of Porsche 718 Boxster and Cayman 982 models. Designed to match the fit and function of the original equipment part, it provides a secure connection between adjoining exhaust components.
This clamp fits on the exhaust tailpipe section, securing the tailpipe/exhaust outlet connection at the rear exhaust assembly. Depending on the vehicle specification, it may be used on the left or right side exhaust tailpipe connection.
Supplied individually, 2 required per vehicle
Fits:
Porsche 718 (982) Boxster 2.0L / 2.5L 2017 >>
Porsche 718C (982C) Cayman 2.0L / 2.5L 2017 >>
* For cars WITH and WITHOUT Sport Exhaust
Diagram ref no 32
The exhaust tailpipe clamp fastens and seals the tailpipe or exhaust connection point, helping to keep the exhaust system properly aligned and leak-free. It allows exhaust sections to be joined securely without welding, making replacement or servicing easier.
Functions
• Secures the exhaust tailpipe connection in place
• Helps prevent exhaust gas leaks at the joint
• Maintains correct alignment of exhaust components
• Reduces unwanted vibration, rattling, or movement
• Supports a reliable seal between exhaust sections
• Allows easier removal and refitting during exhaust repairs
Over time, exhaust clamps can corrode, weaken, stretch, or lose clamping force due to heat cycles, road debris, and exposure to moisture. A worn or damaged tailpipe clamp can cause exhaust leaks, rattling noises, poor exhaust alignment, or visible movement in the rear exhaust section. Replacing the clamp helps restore a secure exhaust connection and keeps the system operating as intended.
When to replace
• The clamp is corroded, cracked, damaged, or seized
• Exhaust gas is leaking from the tailpipe joint
• There is rattling or vibration from the rear exhaust area
• The tailpipe or exhaust outlet is loose or misaligned
• The clamp has been removed during exhaust repair and cannot be reused
• The exhaust system is being serviced, replaced, or refitted
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982251189
The product you are viewing cross references to these numbers
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