Thumbnail Filmstrip of Audi Genuine Control Arm Pinch Bolt, Upper - WHT007963 Images
This part is the Front Upper Control Arm Pinch Bolt (frequently cataloged as the Steering Knuckle Bolt or Upper Control Arm Bolt).
Function & Technical Specifications
Purpose: It is the critical, long horizontal bolt used to secure and clamp both left and right front upper control arm ball joints into the top of the steering knuckle (spindle).
Dimensions: M10 x 110mm x 24mm (M10 thread, 110mm length).
Tensile Strength: 10.9 grade steel.
Supercession: This part replaces the older Audi part number N10770901.
Important Service Notes
Single-Use Hardware: This is a stretch/torque-to-yield bolt and is officially designated by Audi as a part that cannot be reused or reinstalled.
It must be replaced with a new one every time it is removed during suspension service. Seizure Risk: This specific bolt is notoriously prone to rusting and seizing inside the aluminum steering knuckle over time (often referred to by enthusiasts as the "dreaded pinch bolt"). When replacing it, it is highly recommended to clean the bore thoroughly and apply anti-seize or grease to minimize future corrosion.
Common Vehicle Fitment
It is widely used across Audi’s multi-link front suspension layouts, typically spanning the 2005–2018+ model years.
Audi A4 / S4 / RS4 (B8 and B9 platforms)
Audi A5 / S5 / RS5
Audi A6 / S6 / RS6 (C6 and C7 platforms)
Audi A7 / S7 / RS7
Audi A8 / S8 (D3 and D4 platforms)
Audi Q5 / SQ5
Audi allroad
- Brand: Audi
- No applicable data -
