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. Standard Suspension with 50mm Outside Strut Diameter.

Key Features

• B4 Series OE Replacement Suspension Strut Cartridge

Vehicle Fitment

• 1984 Audi 4000 Quattro (Note: S)
• 1985 Audi 4000 Quattro (Note: S)
• 1986 Audi 4000 Quattro (Note: Cs)
• 1987 Audi 4000 Quattro (Note: Cs)
• 1988 Audi 80 (Note: Base)
• 1989 Audi 80 (Note: Base)
• 1990 Audi 80 (Note: Base)
• 1991 Audi 80 (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 21-030406.

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 4000 Quattro
• 21-030406 fitment
• Bilstein B4 Series Twintube Strut Insert
• 1984 Audi 4000 Quattro B4 Series Twintube Strut Insert

Vehicle Fitment Table