Audi Q5 FY Hex Head Bolt Rear Support Frame Control Arm M12X1.5X155 N91227901

Audi Q5 FY Rear Subframe Hex Bolt M12X1.5X155 is a precision mounting component designed for the rear suspension. Thanks to its compatibility with Audi's construction and solid manufacturing, the bolt ensures a stable connection between the subframe and the control arm, which translates to safe and predictable suspension performance. This is a practical solution for users seeking original mounting geometry and secure seating of suspension components.

Specifications and technical data

• SKU: N91227901
• Mark: Audi
• Condition: Used
• OEM Part Number: N91227901
• Substitutable numbers: N91227901, N91 227 901
• Location on the vehicle: Rear
• Category: Wheel Nuts, Bolts & Studs

Purpose and Function in Rear Axle Suspension

The described hex bolt operates in the rear axle area, responsible for the rigid connection between the subframe and the control arm. Proper tightening and selection of the correct component in this location are crucial for:

• maintaining correct suspension geometry,
• vehicle stability under load,
• even transfer of forces from the wheel to the body,
• reducing play and unwanted movement of rear subframe components.

The bolt is designed to work in the demanding environment of a suspension system, subject to variable loads, vibrations, and exposure to external factors.

Construction and Mounting Parameters

The bolt's construction features a hex head, allowing for convenient installation using standard workshop tools. The thread pitch and working length are specifically chosen for application in the rear subframe control arm, ensuring:

• adequate thread engagement depth in the mating component,
• proper clamping force between joined surfaces,
• a safe thread length reserve under dynamic load.

This bolt belongs to the group of mounting elements in the Wheel Locks, Bolts, Nuts, and Studs category, highlighting its use in areas related to wheel and suspension mounting.

Benefits of Using a Dedicated Audi Bolt

Using a bolt designed for the specific Audi Q5 FY model helps maintain the structural integrity of the suspension. Key advantages include:

• compatibility with the factory rear axle subframe and control arm,
• appropriately selected length and thread for operational loads,
• the ability to restore the original mounting method after repair or replacement of suspension components,
• reduced risk of damaging threads in the subframe or control arm due to proper fitment.

This solution is particularly important for work involving suspension refurbishment, replacement of control arms, subframes, or mating components in the rear of the vehicle.

Component Condition and Service Application

This bolt is from the used parts group, making it an attractive alternative for budget-conscious or restoration repairs where maintaining the original mounting method is a priority. It is suitable for both professional workshops and DIY users servicing their suspension, provided the correct installation procedure and tightening torque according to service documentation are followed.

Expanding Work on Audi Wheel Mountings

If you are planning a comprehensive repair or upgrade of the wheel and suspension mounting area in your Audi and require other components from the same group, such as bolts, nuts, or mounting studs, check the available parts in the Audi Wheel Locks, Bolts, Nuts, and Studs category.

Additional Technical Support and Knowledge

When working on wheels and their mountings, it's also worth paying attention to the condition of the wheels themselves and their preparation for further use. Practical tips on selecting and refurbishing alloy wheels can be found in the article Used Wheels Like New: A Guide to Buying and Refurbishing Alloy Wheels, which can supplement your knowledge when planning broader service work.