Audi A6 C6 Transmission Support Frame Mounting Bolts M12X1,5X130X90 N91048401

Audi A6 C6 Transmission Support Frame Mounting Bolts M12X1,5X130X90 N91048401 is a precision mounting component designed for the rear section of the drivetrain in Audi vehicles. Thanks to a precisely matched thread and length, these bolts ensure a stable, secure connection between the frame and the automatic transmission, which directly impacts the durability of the entire drivetrain assembly. This used OEM component is a sensible choice for professional repairs or when replacing mounts in the rear area.

Specifications and technical data

• SKU: N91048401
• Mark: Audi
• Condition: Used
• OEM Part Number: N91048401
• Substitutable numbers: N91048401, N91 048 401
• Location on the vehicle: Rear
• Category: Automatic Transmission

Purpose and function in the drivetrain

The presented transmission support frame mounting bolts are dedicated to the Audi A6 C6 generation, operating in the rear area of the vehicle. They are responsible for the rigid and repeatable positioning of the automatic transmission relative to the frame, which limits unwanted movement, vibrations, and stress within the drivetrain.

The M12 thread and matched working length allow for proper tightening of the connection while maintaining the correct seating depth in the frame and transmission housing. In practice, this translates into:

• stable guidance of the transmission-frame assembly during acceleration and engine braking,
• reduced risk of mounting play in the rear mount area,
• more even distribution of loads on the vehicle's structural frame.

Benefits of using original mounting bolts

For components securing an automatic transmission, it is crucial to maintain the parameters specified by the vehicle manufacturer. Using bolts with the correct thread profile, length, and strength class allows you to:

• maintain the factory geometry of the transmission mount relative to the frame,
• minimize the risk of thread damage in the frame or transmission housing,
• ensure proper cooperation with bushings, mounts, and brackets in the rear part of the system.

For workshops specializing in the service of automatic transmissions in the Audi A6 C6, this used OEM element is a practical solution when replacing damaged or corroded bolts, especially after removing the transmission for repair or regeneration.

Vehicle placement and assembly aspects

The bolts operate in the rear zone of the vehicle, in the immediate vicinity of the frame and the automatic transmission. During installation, it is recommended to:

• thoroughly clean the threaded sockets in the frame and transmission housing,
• check the condition of the contact surfaces of the frame and brackets,
• apply the appropriate tightening torques in accordance with Audi service documentation.

This approach allows you to fully utilize the structural potential of the bolts and reduce the risk of needing to disassemble them again shortly after repair. Correctly selected and installed transmission frame mounts also contribute to the smooth operation of the drivetrain and overall driving comfort.

Support with component selection and technical knowledge

When planning repairs in the area of the automatic transmission, it is worth relying on proven procedures and reliable technical knowledge. If you want to better understand when it pays to reach for used components and what to look for when choosing them, check out the article Used transmission – when is it worth it and what you need to remember, which discusses the practical aspects of operating and repairing automatic transmissions.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Audi and need other elements from the same group, such as housings, brackets, or additional mounting hardware, check out the available parts in the Audi automatic transmissions category.