Bilstein 19-109510 B4 OE Replacement Front Shock 2002-2006 Audi A4 A4 Quattro Sport Suspension

The Bilstein 19-109510 is a B4 OE Replacement front twintube shock absorber designed specifically for 2002 to 2006 Audi A4 and A4 Quattro models equipped with the factory Sport Suspension package. The 19-109510 delivers application-specific valve settings that match the original equipment damping characteristics of the Sport Suspension front strut, restoring the precise handling balance and ride quality that Audi engineers tuned into the B6 A4 platform. This is the correct replacement for drivers who want to preserve the Sport Suspension's tighter responses without moving to a stiffer aftermarket setup.

Bilstein manufactures the 19-109510 with a gas pressure twintube design, using a pressurized outer tube to eliminate oil foaming and deliver consistent damping output across a wide range of operating temperatures. The spring-bearing damper design carries the factory coil spring load, making installation a direct replacement of the original strut cartridge assembly. The 19-109510 also fits the A4 Cabriolet (2003 to 2006) in Sport Suspension spec, covering both convertible and sedan platforms across the B6 chassis generation.

19-109510 Key Features

• B4 OE Replacement twintube shock for A4 and A4 Quattro front Sport Suspension
• Application-specific valving matched to Audi B6 A4 Sport Suspension geometry
• Meets or exceeds original equipment damping and ride standards
• Gas pressure twintube design for temperature-stable, consistent performance
• Spring-bearing damper design retains factory coil spring
• Top pin, bottom fork mounting matches OE hardware exactly
• Direct bolt-in fitment, no modifications required
• Replaces OE Audi numbers 8E0 413 031 AM, BG, BH, BP, CD, CK, CL

Vehicle Fitment

Product Specifications

What's Included

• 1x Bilstein 19-109510 B4 front shock absorber

Installation Notes

The Bilstein 19-109510 is a direct replacement for the front shock absorber on 2002 to 2006 Audi A4 models with Sport Suspension only. Vehicles without the Sport Suspension package use a different strut cartridge and are not compatible with this part number. Always verify the Sport Suspension designation before ordering. Bilstein recommends replacing shocks in axle pairs. Torque all suspension fasteners to Audi OE specification and perform a wheel alignment after installation.

Frequently Asked Questions

What vehicles does the Bilstein 19-109510 fit?
The 19-109510 fits 2002 to 2005 Audi A4 Base and A4 Quattro Base and Avant, and 2003 to 2006 Audi A4 and A4 Quattro Cabriolet. All fitments require the factory Sport Suspension package. It does not fit standard non-sport suspension equipped A4 models.

Does the 19-109510 require Sport Suspension to fit?
Yes. The Bilstein 19-109510 is specifically designed for the Sport Suspension strut assembly. A4 models without Sport Suspension use a different cartridge. Always confirm Sport Suspension is present before purchasing this part.

What OE Audi part numbers does the 19-109510 replace?
The 19-109510 replaces Audi OE numbers 8E0 413 031 AM, 8E0 413 031 BG, 8E0 413 031 BH, 8E0 413 031 BP, 8E0 413 031 CD, 8E0 413 031 CK, and 8E0 413 031 CL.

Is this the correct shock for the A4 Quattro?
Yes. The 19-109510 fits both the standard A4 and the A4 Quattro four-wheel-drive variant, including Base, Avant wagon, and Cabriolet body styles, all with Sport Suspension.

Will the 19-109510 work with lowering springs?
The 19-109510 is the B4 OE replacement tuned for factory spring rates. If the vehicle already has lowering springs, Bilstein recommends the B6 series, which is valved for use with modified spring rates and provides better damping control with lowered ride heights.

What is the warranty on the Bilstein 19-109510?
The 19-109510 is covered by Bilstein's limited lifetime warranty against defects in materials and workmanship. As a suspension component, the Magnuson-Moss Warranty Act provides federal consumer protections ensuring that using quality aftermarket parts does not void your vehicle's warranty on unrelated components.

Should I replace front shocks in pairs?
Yes. Bilstein recommends replacing shocks in axle pairs. Replacing one shock while leaving a worn unit on the opposite side creates uneven damping, which can cause the vehicle to pull to one side during hard braking or cornering.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information visit www.P65Warnings.ca.gov.