034Motorsport Density Line Front Upper Control Arm Kit for Audi A4, S4, RS4, A6, S6, RS6, and Volkswagen Passat (1996–2009)

This 034Motorsport Density Line kit replaces all four front upper control arms on B5, B6, and B7 Audi A4, S4, and RS4, C5 Audi A6, and related models. It restores tight front-end location. Upper control arms link the front knuckle to the body and pivot on bushings as the suspension travels. Worn upper arms are a common problem on these chassis. Typical signs include clunking over driveways and speed bumps, play where the arms meet the subframe or knuckle, uneven tire wear, and an inability to align the car properly. Vibration through the steering wheel at highway speed, or a wandering, pulling feel, can also point to tired arms. 034Motorsport had the arms built by an OE supplier for Audi to its own specifications. The bushings use slightly stiffer durometer rubber for crisper handling and longer life.

034Motorsport parts sold by PMB Performance carry a 24-month warranty.

The kit covers the upper links sold under OE numbers 8E0407505A, 8E0407506A, 8E0407509A, and 8E0407510A, which are both pairs of front upper arms. 034Motorsport supplies only the hardware it classes as stressed, must-replace hardware. A complete nut and bolt kit is sold separately, and no partial hardware kit exists for the uppers alone. New hardware for the sway bar end links is not included. The arms are made in the United States.

Technical Details

• Manufacturer: 034Motorsport
• Part number: 034-401-1003
• Product line: Density Line
• Position: front upper control arms, four pieces
• Replaces OE numbers 8E0407505A, 8E0407506A, 8E0407509A, and 8E0407510A
• Bushings: slightly stiffer durometer rubber than stock
• Hardware: stressed, must-replace hardware only
• Made in the United States
• Warranty: 24 months

Installation & Tuning Notes

034Motorsport requires that the suspension be compressed to static ride height before any suspension pivot bushing is tightened. If the bushings are tightened with the suspension hanging, the twisting forces on them are far higher than intended, and they will tear. 034Motorsport voids its warranty on arms installed without this step.

Common Questions

Does the kit include all new nuts and bolts?
No. It includes only the stressed, must-replace hardware. The full hardware kit is a separate purchase.

Are the sway bar end link bolts included?
No. New end link hardware is not part of this kit.

PMB sells this 034Motorsport arm set for owners refreshing a worn front end.

Fitment & Compatibility

See the fitment table below for the models this kit covers. Confirm your body style, since some years apply only to specific versions. PMB will check the fit against your VIN on request.