034Motorsport Density Line Front Lower Control Arm Kit for Audi A4 Cabriolet, S4, and RS4 (2002–2009)

The 034Motorsport Density Line Lower Control Arm Kit replaces all four factory lower control arms on the B6 and B7 Audi A4 Cabriolet, S4, and RS4. Each arm has a cast aluminum body fitted with high-durometer rubber bushings, which reduce bushing deflection compared with worn factory parts. Every arm also uses a heavy-duty ball joint design. The kit bolts in as a direct replacement for the factory lower arms, and 034Motorsport makes it in the United States.

This 034Motorsport kit carries a 24-month warranty.

Lower control arms connect the wheel carrier to the subframe and pivot on their bushings so the wheel can travel over bumps and through turns. Worn bushings and joints show up as play where the arms meet the subframe or knuckle, noise from the suspension, uneven tire wear, an alignment that will not set correctly, steering wheel shudder at highway speed, or wandering and pulling from side to side. This kit cross-references factory numbers 8E0407151N, 8E0407693AL, 8E0407694AL, 8E0411317, 8E0411318, and 8D0498800, so you can compare it against the parts on your car before you order. The stiffer bushings resist deflection better than the factory rubber, which gives more consistent handling and lets the arms hold up to hard use.

Technical Details

• Manufacturer: 034Motorsport
• Part number: 034-401-1021
• Product line: Density Line
• Contents: four lower control arms
• Arm body: cast aluminum
• Bushings: high-durometer rubber
• Ball joints: heavy-duty design
• Made in the United States
• Direct replacement for the factory lower control arms
• Factory cross-references: 8E0407151N, 8E0407693AL, 8E0407694AL, 8E0411317, 8E0411318, 8D0498800
• Warranty: 24 months

Common Questions

How many arms come in this kit?
All four lower control arms needed to replace the factory lower arms.

Does this kit need modification to fit?
No. 034Motorsport builds it as a direct replacement for the factory lower control arms.

What do the stiffer bushings change?
The high-durometer rubber reduces deflection compared with worn factory bushings, so the arms hold the wheel more firmly under load.

034Motorsport, founded by Javad Shadzi in 2005, designs, tests, and builds its Audi suspension parts at its Fremont, California facility, and PMB Performance carries this kit for B6 and B7 owners.

Fitment & Compatibility

Check the fitment table below for the models and years this kit fits. For the A4, make sure your car is a Cabriolet. Send us your VIN and we will confirm fit before you order.