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Bilstein B4 DampTronic Rear Left Twintube Shock - BMW X5 (G05) / X6 (G06) 2019-2026

Bilstein SKU: BIL20-328955
Price
6% OFF
In Stock – Ready to Ship
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The B4 OE Replacement (DampTronic) is Bilstein's service replacement damper for BMW chassis that left the factory with electronically adjustable suspension. It retains the original electronic damper interface, so the vehicle's adaptive damping system keeps full function after the swap. Valving comes from Bilstein's OE development work, which holds the damping force range inside what the factory control unit expects and restores original ride quality and handling instead of firming the car up. The damper is a gas pressure twintube finished in black paint, with a stem upper mount and a 14.1 mm eye lower mount, measuring 356.0 mm collapsed and 482.3 mm extended. Spring seat and boot are not included.

Specifications

Type B4 OE Replacement (DampTronic) gas pressure twintube shock absorber
Position Rear left
OEM Replacement Direct replacement for the factory DampTronic electronically adjustable damper
Finish Black paint
Upper Mount Stem
Lower Mount Eye, 14.1 mm
Collapsed Length 356.0 mm (14.01 in)
Extended Length 482.3 mm (18.98 in)
Included Damper only; spring seat and boot not included
Pairs With 20-328962 rear right, 23-328983 front left, 23-328976 front right
Quantity 1
Part Number 20-328955
Warranty BILSTEIN Limited Lifetime Warranty, North America, original purchaser, non transferable

Documents: Installation Instructions (PDF)  |  Safety Data Sheet (PDF)

This part fits:

Year Make Model Submodel
2020-2023 BMW X5 M50i
2020-2026 BMW X5 sDrive40i
2019-2026 BMW X5 xDrive40i
2019-2020 BMW X5 xDrive50i
2020-2023 BMW X6 M50i
2020-2021 BMW X6 sDrive40i
2020-2026 BMW X6 xDrive40i

Shipping

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  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Special order items follow a lead time we confirm with you individually before the order is committed.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
  • Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
  • 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 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty
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