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Bilstein 21-030390 - Suspension Strut Cartridge (Front)
Product Overview
The Bilstein 21-030390 Suspension Strut Cartridge is engineered to enhance the performance and handling of your Audi vehicle. This premium-grade strut cartridge features a specialized design that integrates the shock absorber into a complete unit, ensuring a smooth and responsive ride. With OE-level quality and reliability, the Bilstein 21-030390 meets or exceeds OEM standards, making it an ideal choice for those seeking dependable performance in models such as the Audi A6, S6, and more. Choose Bilstein 21-030390 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This Bilstein 21-030390 is equivalent to or replaces the following part numbers: 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, F4-PNE-3039-BC, F4-PNE-3039-BG, PNE-3039, 366002, 115 476.
Vehicle Compatibility
This part fits some of the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility.
- Audi A6 Quattro 2.8 V6 (1995–1998)
- Audi A6 2.8 V6 (1995–1998)
- Audi A6 Avant 2.8 V6 (1995–1998)
- Audi S6 2.2 L5 (1995)
- Audi 100 2.8 V6 (1991–1994)
- Audi 100 Quattro 2.8 V6 (1991–1994)
- Audi V8 Quattro 4.2 V8 (1991–1994)
- Audi 5000 2.2 L5 (1984–1989)
- Audi 200 2.2 L5 (1984–1991)
- Audi 5000 Quattro 2.3 L5 (1984–1989)
This may also fit other applications. Please use the vehicle selector tool to verify fitment.
Why Shop at eEuroparts.com?
- Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
- Exclusive Kits That Fitâ„¢ - complete repair solutions with no guesswork
- Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
- Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
- Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
- Established Trust: Serving the European auto community since 2000.
Frequently Asked Questions
What does the Bilstein 21-030390 Suspension Strut Cartridge do?
The strut cartridge plays a crucial role in your vehicle's suspension system. It absorbs shocks from the road, supports vehicle weight, and helps maintain tire contact with the road surface, ensuring a smooth and controlled ride.
How do I know if my Suspension Strut Cartridge needs replacement?
Common signs that your strut cartridge may need replacement include excessive bouncing when driving, noticeable body roll during turns, leaking fluid from the struts, and uneven tire wear.
Can I install the Bilstein 21-030390 myself?
Yes, you can install the Bilstein 21-030390 yourself if you have the proper tools and experience. However, it is important to follow safety precautions and consult a repair manual specific to your vehicle.
What are the symptoms of a faulty Suspension Strut Cartridge?
The symptoms of a faulty strut cartridge include a bouncy ride, increased body roll during cornering, and visible fluid leaks. Pay attention to how your vehicle handles, as these issues can affect overall safety and performance.
Why should I choose Bilstein for my Suspension Strut Cartridge needs?
Bilstein is a trusted brand known for quality and performance. Order Bilstein 21-030390 today for a factory-correct replacement that restores safety and performance.
Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.
- BrandBilstein
- ManufacturerBilstein
- MPN21-030390
- Part TypeSuspension Strut Cartridge
- PositionFront
- OE Part Numbers441 413 031 G, 441413031G, 443 412 031 F, 443412031F, 443 413 031 G, 443413031G, 4A0 413 031 J, 4A0413031J, 443 413 031 E, 443413031E, 4A0 413 031, 4A0413031, 4A0 413 031 D, 4A0413031D, 443 413 031 F, 443413031F, 441 413 031 N, 441413031N
- Cross Reference Numbers21030390, F4-PNE-3039-BC, F4PNE3039BC, 366002, F4-PNE-3039-BG, F4PNE3039BG, PNE-3039, PNE3039, 115 476, 115476
- FeaturesBoot Included : No
California Proposition 65 : WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov
Finish : Black Paint
Internal Design : Twintube
Lower Mount Type : Housing
Series : B4 OE Replacement
Spring Seat Included : No
Title : Bilstein Shock Absorbers
Upper Mount Type : Stem
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1978 | Audi | 5000 | Base (2.2 L5 GAS) | |
| 1979 | Audi | 5000 | S (2.0 L5 DIESEL) | |
| 1979 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1979 | Audi | 5000 | Base (2.2 L5 GAS) | |
| 1979 | Audi | 5000 | Base (2.0 L5 DIESEL) | |
| 1983 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1983 | Audi | 5000 | S Turbo (2.2 L5 GAS) | |
| 1983 | Audi | 5000 | Base (2.0 L5 DIESEL) | |
| 1983 | Audi | 5000 | Base (2.2 L5 GAS) | |
| 1984 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1984 | Audi | 5000 | S Turbo (2.2 L5 GAS) | |
| 1985 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1985 | Audi | 5000 | S Turbo (2.2 L5 GAS) | |
| 1989 | Audi | 100 | E (2.3 L5 GAS) | |
| 1989 | Audi | 100 | Base (2.3 L5 GAS) | |
| 1989 | Audi | 100 Quattro | Base (2.3 L5 GAS) | |
| 1989 | Audi | 200 | Base (2.2 L5 GAS) | |
| 1989 | Audi | 200 Quattro | Base (2.2 L5 GAS) | |
| 1990 | Audi | 100 | Base (2.3 L5 GAS) | |
| 1990 | Audi | 100 Quattro | Base (2.3 L5 GAS) | |
| 1990 | Audi | 200 | Base (2.2 L5 GAS) | |
| 1990 | Audi | 200 Quattro | Base (2.2 L5 GAS) | |
| 1990 | Audi | V8 Quattro | Base (3.6 V8 GAS) | |
| 1991 | Audi | 100 | Base (2.3 L5 GAS) | |
| 1991 | Audi | 100 Quattro | Base (2.3 L5 GAS) | |
| 1991 | Audi | 200 | Base (2.2 L5 GAS) | |
| 1991 | Audi | V8 Quattro | Base (3.6 V8 GAS) | |
| 1991 | Audi | 200 Quattro | 20v Avant (2.2 L5 GAS) | |
| 1991 | Audi | 200 Quattro | 20v (2.2 L5 GAS) | |
| 1991 | Audi | 200 Quattro | Avant (2.2 L5 GAS) | |
| 1991 | Audi | 200 Quattro | Base (2.2 L5 GAS) | |
| 1992 | Audi | 100 | S (2.8 V6 GAS) | |
| 1992 | Audi | 100 | CS (2.8 V6 GAS) | |
| 1992 | Audi | 100 | Base (2.8 V6 GAS) | |
| 1992 | Audi | 100 Quattro | CS (2.8 V6 GAS) | |
| 1992 | Audi | V8 Quattro | Base (4.2 V8 GAS) | |
| 1993 | Audi | 100 | S (2.8 V6 GAS) | |
| 1993 | Audi | 100 | CS (2.8 V6 GAS) | |
| 1993 | Audi | 100 | Base (2.8 V6 GAS) | |
| 1993 | Audi | 100 Quattro | CS (2.8 V6 GAS) | |
| 1993 | Audi | V8 Quattro | Base (4.2 V8 GAS) | |
| 1994 | Audi | 100 | S (2.8 V6 GAS) | |
| 1994 | Audi | 100 | CS (2.8 V6 GAS) | |
| 1994 | Audi | 100 Quattro | CS (2.8 V6 GAS) | |
| 1994 | Audi | V8 Quattro | Base (4.2 V8 GAS) | |
| 1982 | Audi | 5000 | Base (2.0 L5 DIESEL) | |
| 1982 | Audi | 5000 | Base (2.2 L5 GAS) | |
| 1982 | Audi | 5000 | S Turbo (2.2 L5 GAS) | |
| 1982 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1981 | Audi | 5000 | Base (2.2 L5 GAS) | |
| 1981 | Audi | 5000 | Base (2.0 L5 DIESEL) | |
| 1981 | Audi | 5000 | S Turbo (2.2 L5 GAS) | |
| 1981 | Audi | 5000 | S (2.0 L5 DIESEL) | |
| 1981 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1980 | Audi | 5000 | Base (2.2 L5 GAS) | |
| 1980 | Audi | 5000 | Base (2.0 L5 DIESEL) | |
| 1980 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1980 | Audi | 5000 | S (2.0 L5 DIESEL) | |
| 1988 | Audi | 5000 Quattro | S (2.3 L5 GAS) | |
| 1988 | Audi | 5000 | CS (2.2 L5 GAS) | |
| 1988 | Audi | 5000 | S (2.3 L5 GAS) | |
| 1987 | Audi | 5000 Quattro | S (2.3 L5 GAS) | |
| 1987 | Audi | 5000 | CS (2.2 L5 GAS) | |
| 1987 | Audi | 5000 | S (2.3 L5 GAS) | |
| 1987 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1986 | Audi | 5000 | CS (2.2 L5 GAS) | |
| 1986 | Audi | 5000 | S (2.2 L5 GAS) | |
| 1998 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | |
| 1998 | Audi | A6 Quattro | Base (2.8 V6 GAS) | Notes: Sport Suspension to Chassis/VIN 4B-W-100-000 |
| 1997 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | |
| 1997 | Audi | A6 Quattro | Base (2.8 V6 GAS) | |
| 1997 | Audi | A6 | Avant (2.8 V6 GAS) | |
| 1997 | Audi | A6 | Base (2.8 V6 GAS) | |
| 1996 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | |
| 1996 | Audi | A6 Quattro | Base (2.8 V6 GAS) | |
| 1996 | Audi | A6 | Avant (2.8 V6 GAS) | |
| 1996 | Audi | A6 | Base (2.8 V6 GAS) | |
| 1995 | Audi | S6 | Avant (2.2 L5 GAS) | |
| 1995 | Audi | S6 | Base (2.2 L5 GAS) | |
| 1995 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | |
| 1995 | Audi | A6 Quattro | Base (2.8 V6 GAS) | |
| 1995 | Audi | A6 | Avant (2.8 V6 GAS) | |
| 1995 | Audi | A6 | Base (2.8 V6 GAS) |
Warranty Overview
At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, contact customer support via Chat or Contact Us.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For complete details, please see our full Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.





