Exhaust sleeve catalytic converter to U-Bend. Porsche Boxster 986  ❭  99611111001

Exhaust sleeve catalytic converter to U-Bend
Genuine Porsche exhaust clamp - also called a clamping sleeve - It is used where the catalytic converter connects to the next section of exhaust (U-bend/silencer pipe) on Porsche 986 Boxster models.
Sold as: Single clamp (two may be required per complete joint).

Fits:
Porsche 986 Boxster 1997 - 2004

Diagram ref no 15

The exhaust clamp helps secure and seal the exhaust connection between the catalytic converter and adjoining exhaust pipe sections. Under normal operation, exhaust components heat up, cool down, and experience vibration; this clamp maintains a tight mechanical joint, preventing exhaust leaks, excessive movement, and noise. Genuine Porsche clamps are engineered with durable materials that withstand heat, corrosion, and vibration as intended by the factory design.

Function:
•  Secures exhaust junctions: Holds exhaust piping tightly together
•  Prevents exhaust leaks: Maintains a sealed joint at critical interfaces
•  Resists corrosive conditions: Designed for high-temperature exposure
•  Ensures proper exhaust alignment: Reduces noise, rattles, and stress on mounts

As part of the exhaust system hardware, proper clamp integrity helps the entire exhaust assembly function smoothly and reliably across varying conditions.

Exhaust clamps are exposed to extreme temperatures, road salts, and moisture - conditions that accelerate corrosion and fatigue. Over time, original clamps can weaken, rust, or lose clamping force, leading to:
•  Exhaust leaks Increased noise or vibration
•  Poor exhaust alignment
•  Potential damage to adjacent components

Using a Genuine Porsche clamp ensures the joint is restored to factory-spec tightness, maintaining proper exhaust pressure sealing and alignment as originally designed.

When to replace. Replace the exhaust clamp when:
•  You are servicing or refitting the exhaust system
•  The original clamp shows rust, deformation, or breaks
•  You hear exhaust leaks or unusual noise at the catalytic converter junction
•  The clamp no longer holds the pipes firmly in place

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99611111001

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