# Bilstein 21-030390 B4 Series Twintube Strut Insert for 1978-1998 Audi 100 and More ### Performance Overview Bilstein B4 Shocks and Struts are ideal as OEM replacements, and are made to guarantee factory quality performance. They feature a large-diameter body, and rely on track-proven and road ready suspension technologies. The shocks are available in a classic black finish, and are backed by a limited lifetime warranty. Sport Suspension. ### Key Features - B4 Series OE Replacement Suspension Strut Cartridge ### Vehicle Fitment - 1989 Audi 100 (Note: Base, E) - 1990 Audi 100 (Note: Base) - 1991 Audi 100 (Note: Base) - 1992 Audi 100 (Note: Base, Cs, S) - 1993 Audi 100 (Note: Base, Cs, S) - 1994 Audi 100 (Note: Cs, S) - 1989 Audi 100 Quattro (Note: Base) - 1990 Audi 100 Quattro (Note: Base) ### FAQ **Will this fit my vehicle?** Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase. **What part number is this?** The listed part number is 21-030390. **Is this product designed for direct replacement?** Yes. This product is intended to match compatible vehicle applications listed in the fitment section. **Should I confirm fitment before ordering?** Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering. ### Common Searches - B4 Series Twintube Strut Insert for Audi 100 - 21-030390 fitment - Bilstein B4 Series Twintube Strut Insert - 1989 Audi 100 B4 Series Twintube Strut Insert ### Vehicle Fitment Table Year Make Model Position Fitment Precision Note 1989 Audi 100 Base, E 1990 Audi 100 Base 1991 Audi 100 Base 1992 Audi 100 Base, Cs, S 1993 Audi 100 Base, Cs, S 1994 Audi 100 Cs, S 1989 Audi 100 Quattro Base 1990 Audi 100 Quattro Base 1991 Audi 100 Quattro Base 1992 Audi 100 Quattro Cs 1993 Audi 100 Quattro Cs 1994 Audi 100 Quattro Cs 1989 Audi 200 Base 1990 Audi 200 Base 1991 Audi 200 Base 1989 Audi 200 Quattro Base 1990 Audi 200 Quattro Base 1991 Audi 200 Quattro 20V, 20V Avant, Avant, Base 1978 Audi 5000 Base 1979 Audi 5000 Base, S 1980 Audi 5000 Base, S 1981 Audi 5000 Base, S, S Turbo 1982 Audi 5000 Base, S, S Turbo 1983 Audi 5000 Base, S, S Turbo 1984 Audi 5000 S, S Turbo 1985 Audi 5000 S, S Turbo 1986 Audi 5000 Cs, S 1987 Audi 5000 Cs, S 1988 Audi 5000 Cs, S 1987 Audi 5000 Quattro S 1988 Audi 5000 Quattro S 1995 Audi A6 Avant, Base 1996 Audi A6 Avant, Base 1997 Audi A6 Avant, Base 1995 Audi A6 Quattro Avant, Base 1996 Audi A6 Quattro Avant, Base 1997 Audi A6 Quattro Avant, Base 1998 Audi A6 Quattro Avant, Base 1995 Audi S6 Avant, Base 1990 Audi V8 Quattro Base 1991 Audi V8 Quattro Base 1992 Audi V8 Quattro Base 1993 Audi V8 Quattro Base 1994 Audi V8 Quattro Base ## Details - **Price:** 122.4 CAD - **Vendor:** Bilstein - **Type:** B4 Series Twintube Strut Insert - **Tags:** 1978 Audi 5000, 1979 Audi 5000, 1980 Audi 5000, 1981 Audi 5000, 1982 Audi 5000, 1983 Audi 5000, 1984 Audi 5000, 1985 Audi 5000, 1986 Audi 5000, 1987 Audi 5000, 1987 Audi 5000 Quattro, 1988 Audi 5000, 1988 Audi 5000 Quattro, 1989 Audi 100, 1989 Audi 100 Quattro, 1989 Audi 200, 1989 Audi 200 Quattro, 1990 Audi 100, 1990 Audi 100 Quattro, 1990 Audi 200, 1990 Audi 200 Quattro, 1990 Audi V8 Quattro, 1991 Audi 100, 1991 Audi 100 Quattro, 1991 Audi 200, 1991 Audi 200 Quattro, 1991 Audi V8 Quattro, 1992 Audi 100, 1992 Audi 100 Quattro, 1992 Audi V8 Quattro, 1993 Audi 100, 1993 Audi 100 Quattro, 1993 Audi V8 Quattro, 1994 Audi 100, 1994 Audi 100 Quattro, 1994 Audi V8 Quattro, 1995 Audi A6, 1995 Audi A6 Quattro, 1995 Audi S6, 1996 Audi A6, 1996 Audi A6 Quattro, 1997 Audi A6, 1997 Audi A6 Quattro, 1998 Audi A6 Quattro, 21-030390, Automotive Parts, B4 Series Twintube Strut Insert, Bilstein, Bilstein Suspension, Direct Replacement, Performance Suspension ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 122.40 CAD | In stock | ## Images - Bilstein 21-030390 B4 Series Twintube Strut Insert for 1978-1998 Audi 100 and More --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/bilstein-audi-100-suspension-strut-21-030390) > Updated: 2026-07-16