Exhaust cross over Pipe clamp. Porsche 911 1975-89  ❭  91111118700

Exhaust Clamp for Cross Over Pipe - Clamp Made Out of 2 Halves

Maintain a secure and leak-free exhaust system with Exhaust Clamp, designed for use on the cross over pipe of Porsche 911 models produced between 1975 and 1989. Manufactured from mild steel, this clamp consists of two matching half sections that bolt together around the exhaust pipe connection, providing the clamping force required to secure and seal the joint.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50

Diagram ref no 11 

The cross over pipe forms an important part of the air-cooled Porsche exhaust system, helping direct exhaust gases between engine banks and associated exhaust components. The clamp plays a critical role in maintaining correct pipe alignment while preventing movement, vibration and exhaust leaks.

Over time, original exhaust clamps can become corroded, weakened or damaged due to repeated heat cycles, moisture exposure and road contamination. Replacing worn clamps helps ensure reliable exhaust system operation and supports long-term durability.

What Does an Exhaust Clamp Do?

An exhaust clamp secures adjoining exhaust components together while helping maintain a tight and stable connection.

A properly functioning exhaust clamp helps:

• Secure exhaust pipe joints
• Maintain correct pipe alignment
• Reduce exhaust movement and vibration
• Help prevent exhaust gas leaks
• Support gasket sealing performance
• Improve exhaust system reliability
• Protect connected exhaust components

Without sufficient clamping force, exhaust joints can loosen and allow gases to escape.

Symptoms of Wear or Failure

Exhaust clamps operate in one of the harshest environments on the vehicle and are constantly exposed to heat, corrosion and vibration.

Common signs that replacement may be required include:

• Visible rust or corrosion
• Cracked or weakened clamp sections
• Loose exhaust joints
• Exhaust blowing noises
• Rattling from the exhaust system
• Exhaust leaks around pipe connections
• Soot deposits around clamp areas
• Distorted or damaged clamp halves
• Difficulty maintaining correct torque

A failing clamp can allow excessive movement within the exhaust system, leading to leaks and additional component wear.

Why Replacement Matters

Replacing a worn exhaust clamp helps maintain exhaust system integrity and prevents unnecessary stress on surrounding components.

Benefits include:

• Restores secure pipe connections
• Reduces exhaust leaks
• Improves exhaust system stability
• Minimises vibration and rattles
• Helps maintain proper exhaust flow
• Protects connected pipes and silencers
• Supports reliable long-term performance
• Improves repair and restoration quality

For classic air-cooled Porsche 911 models, replacing ageing exhaust hardware is an important part of maintaining both performance and reliability.