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Fitments
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Description
Bilstein B4 Original Equipment replacement shocks and struts with mono- or twin-tube gas pressurized design give you the handling and control Bilstein is known for. The 21-030390 restores factory ride comfort and safety to your Audi. Not recommended for use with lowering springs. Limited lifetime warranty against manufacturer defects.
Bilstein B4 OE Replacement 21-030390
Upper Mount Type - Stem
Lower Mount Type - HousingReplaces OEM part Numbers: Audi: 441 413 031 G, 441 413 031 N, 443 412 031 F, 443 413 031 E, 443 413 031 F, 443 413 031 G, 4A0 413 031, 4A0 413 031 D, 4A0 413 031 J
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Review
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Need Help?
Contact Shockwarehouse By Phone
Shockwarehouse is available from 10 am to 4:30 pm Eastern Standard Time Monday through Friday toll free at 1-800-245-7469 or locally and internationally at 1-954-202-6229.
Contact Shockwarehouse Through Live Chat
Shockwarehouse live chat is typically available from 10 am to 4:30 pm Monday through Friday and can be accessed by clicking the Live Chat button on the right side of the page.
Contact Shockwarehouse By Text/SMS
Shockwarehouse is available from 10 am to 4:30 pm Eastern Standard Time Monday through Friday, text us at 1-800-245-7469. Durring off hours, the texts are checked frequently and usually will be answered within 1-6 hours. Please provide details about your vehicle or shock needs so we can have your answer ready.
Contact Shockwarehouse Through Email
Technical Questions
All technical questions regarding vehicle fitment, custom made shocks, lifted and lowered vehicles, or any other technical shock questions should use the Technical Support Form
Returns
All return requests and inquiries must use the Return Form.
Warranty
For warranty requests and inquiries, please see the Warranty Help Form
New Order or Order Status
For help placing a new order, checking the status of your order, or making changes to your order, please call 1-800-245-7469 or 1-954-202-6229 between the hours of 9 am and 6 pm Eastern Standard Time Monday through Friday. You can also submit the form here. Please note: order cancellation requests MUST be made by phone.