Audi A4 B8 A5 Q5 A6 C7 Rear Left Upper Control Arm 8K0505323D

Product overview

A new replacement rear upper control arm for the left-hand side of a wide range of Audi models built on the B8 and related platforms. It carries OE-reference numbers 8K0505323D, 8K0505323F, 8K0505323H and 8KD505323 (including the B and C suffixes), making it straightforward to match against the arm currently on your car.

Worn upper arms commonly show up as knocking over bumps, vague steering feel or uneven tyre wear, so replacing a tired arm can help restore a settled ride.

Vehicle compatibility

Listed fitment data includes 200 applications. Highlights are the A4 B8 sedan, Avant and Allroad (approx. 2007–2016), A5 coupe, Sportback and Convertible (approx. 2008–2017), Q5 and SQ5 (approx. 2008–2017), A6 C7 and S6 (approx. 2010–2018), A7 Sportback and A8 D4. The listing also mentions Porsche Macan. Engines range from 1.8 TFSI through 3.0 TDI and 3.2 FSI to RS5. Confirm by OE number or VIN before ordering.

Key features

• Rear axle, upper, left-hand position as listed
• Available in aluminium or steel versions; select the material option that matches your original arm
• Cross-referenced to six OE-reference numbers
• New condition, suited to replacing worn bushes or a bent arm as a complete unit

Technical specifications

Installation requirements

Control arms are critical suspension components, so professional installation is strongly recommended. Final tightening of the bush bolts should be done with the vehicle at normal ride height to avoid pre-loading the rubber. A wheel alignment check is advised once the job is complete. Many technicians replace arms in pairs to keep handling even from side to side.

Fitment checks before ordering

Rear upper arm designs differ between quattro and front-wheel-drive versions and between production years. Please check the number on your existing arm or supply your VIN so we can confirm fitment before you buy.

Package inclusions

1 x rear upper control arm (left) in the selected material. Bolts and nuts are not included unless stated.

Shipping information

Shipped from China to customers in Australia and New Zealand. Freight is calculated at checkout based on your delivery address, and actual freight is confirmed at the time of order.

Special Order Item

This product is a special-order item sourced specifically for your vehicle. Please allow an estimated lead time of 3-4 weeks for sourcing and delivery. Lead times are estimates and may vary depending on supplier availability, order processing, and international shipping. We recommend confirming availability before placing your order.