Hexagon-Head Bolt. Porsche 996 / 997.1 Turbo / GT2 › 99611121270

This Porsche hexagon-head bolt secures connected components within the specified exhaust system assemblies. It is used in the exhaust assembly context that includes heat protection on the applications listed below.

Fits:

• Porsche 997.1 Turbo / GT2, M97.70, 2007–09
• Porsche 997.1 GT2 RS, M97.70, 2011
• Porsche 996 TURBO 2000–05 (996 (911) (1997–2005))
• Porsche 996 GT2 2001–05 (996 (911) (1997–2005))

Check fitment for your specific vehicle (model, year, engine) before ordering.

Required Quantity
Two bolts are specified for each applicable 996 Turbo or 997.1 Turbo/GT2/GT2 RS exhaust system assembly.

What Is This Part?
This is a threaded fixing with an external hexagonal head, allowing it to be tightened and removed with a suitable spanner or socket. It forms part of the exhaust system fastening arrangement and holds the connected parts in their intended position. The surrounding assembly includes exhaust components, supports and heat protection, so identifying the correct fixing position matters when replacing hardware. Match the part number to the intended application rather than selecting a bolt solely because its head looks similar.

What Does This Part Do?

• Secures connected parts: Provides the threaded fastening needed at its specified exhaust assembly position.
• Maintains seating: Holds the attached components together when correctly installed and tightened.
• Allows tool access: The hexagonal head provides a drive surface for fitting and removal.

Why Replace This Part?
Exhaust hardware can become corroded or seized after exposure to moisture and repeated heating and cooling. Damaged threads, a rounded head or a broken bolt can prevent the fixing from being removed, seated or tightened correctly. Replace an affected bolt when inspection shows that it is no longer serviceable.

During exhaust removal or refitting, inspect the mating threads and attached components as well as the bolt. A replacement fixing will not correct a damaged mounting point or poor alignment. Follow the applicable workshop instructions for tightening torque, thread preparation and any renewal requirements.

When to Replace This Part?

• Significant corrosion: Rust or pitting has damaged the head, shank or threads.
• Damaged drive head: A suitable tool can no longer grip the hexagon properly.
• Thread damage: Threads are stripped, crossed or otherwise unsuitable for refitting.
• Breakage or distortion: The bolt is snapped, bent or visibly damaged.
• Missing or loose fixing: Inspect the complete connection and replace defective hardware after establishing the cause.

Where Is This Part Fitted?
Location: Within the exhaust system assembly on the listed applications, including the assembly with heat protection on the specified 997.1 models. Confirm the exact fastening position for the vehicle before dismantling or ordering.

Product Summary

• Product: Hexagon-head exhaust assembly bolt.
• Brand: Porsche.
• Part number: 99611121270.
• Purpose: Secures connected components at its specified exhaust assembly position.