Exhaust Lock Nut for Bolt. Porsche 965 Turbo  ❭  99908405202

Exhaust Lock Nut For Bolt.
The OE Match Exhaust Lock Nut for Bolt is a high-quality replacement fastening component designed to securely retain exhaust system bolts in high-temperature operating environments. Manufactured to OE specifications for thread accuracy, strength and heat resistance, this self-locking nut helps maintain secure exhaust connections while resisting loosening caused by heat cycles, vibration and engine movement.  

Fits:

• Porsche 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93

Diagram Ref No 25  

Manufactured from high-strength, corrosion-resistant steel with a durable heat-resistant finish, the lock nut is specifically engineered for use within Porsche exhaust systems. Its self-locking design provides reliable clamping force, helping to maintain leak-free exhaust joints and ensuring long-term reliability of exhaust manifold, catalytic converter, silencer and pipework connections where applicable.  

What This Product Does:

• Securely fastens exhaust system components together.
• Maintains consistent clamping force under high temperatures.
• Resists loosening caused by vibration and thermal expansion.
• Helps prevent exhaust gas leaks.
• Supports correct exhaust alignment.
• Provides reliable fastening for exhaust repairs and installations.
• Replaces worn, corroded or damaged original lock nuts.
• Forms an essential part of the exhaust mounting system.

Symptoms Of Wear Or Failure:

• Loose exhaust components.
• Exhaust blowing or gas leaks.
• Rattling or vibrating exhaust system.
• Corroded or seized fasteners.
• Damaged or stripped threads.
• Loss of locking capability.
• Broken or missing fixing hardware.
• Difficulty maintaining correct exhaust alignment.
• Increased exhaust noise.
• Visible rust or deterioration of the fastening hardware.

Why Replacement Matters:

• Exhaust fasteners operate in one of the harshest environments on the vehicle, where they are exposed to extreme temperatures, rapid heating and cooling cycles, moisture, road salt and constant vibration. Over time, conventional fasteners can corrode, seize or lose their clamping force, allowing exhaust joints to loosen.
• A worn or damaged lock nut can result in exhaust leaks, excessive movement and increased stress on surrounding exhaust components. Loose exhaust connections may also generate unwanted noise, reduce exhaust efficiency and accelerate wear of gaskets and mounting hardware.
• Replacing exhaust lock nuts whenever exhaust components are serviced helps ensure secure, long-lasting connections and reliable sealing. An OE Match replacement provides factory-style fitment, high-strength construction and excellent resistance to heat and corrosion, helping maintain the durability, performance and reliability of your Porsche's exhaust system.

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99908405202

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