Bilstein B1 Suspension Hardware Kit B4-KT1-Z441A00 - Replacement Damper Component Kit

Bilstein B1 (Components) hardware kits are direct replacements for the component kits originally packaged with Bilstein dampers - the mounting hardware that gets lost, corroded or damaged during a shock swap. They are designed for use with Bilstein products only, and are not a universal hardware assortment.

Bilstein publishes no component list, no vehicle application list and no damper cross-reference for this kit number - its catalogue entry carries the part number, series, weight and country of origin only. We will not guess at the contents. Order it by part number, or match it against the hardware that was originally supplied with your Bilstein damper. Bilstein lists a quantity of two per vehicle; this listing is for a single kit.

• B1 (Components) series - replacement for the component kit originally supplied with a Bilstein damper
• For use with Bilstein products only
• Identify by part number B4-KT1-Z441A00 - Bilstein publishes no contents list or vehicle application for this kit
• Sold as one kit; Bilstein specifies two per vehicle
• Bilstein published weight 0.50 lb; made in the United States
• Bilstein Limited 90-Day Warranty

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy