Bilstein 12-117123 B1 Rear Damper Upper Support for BMW 5-Series E39 1995–2003

Refresh the back end of your E39 with this genuine Bilstein B1 rear damper upper support, part number 12-117123. This factory-grade rubber-metal bearing plate secures the rear damper to the body, cutting unwanted noise and vibration and restoring tight, composed road manners. It is a precise, bolt-on solution for ageing or cracked rear tower mounts on the 5-Series E39 platform.

Why enthusiasts choose this Bilstein service part

• Designed by Bilstein for perfect geometry and long-term durability with OE and Bilstein dampers
• Premium rubber-metal construction for reduced NVH, fewer creaks and a more refined ride
• Helps cure rear-end thuds and slack caused by tired upper supports
• Keeps the damper located correctly in the rear turret for confident handling and stability
• Direct-fit rear axle component for straightforward replacement

We have installed these on multiple customer E39s and our own builds, and feedback has been consistently positive. Expect a quieter cabin, cleaner damper response and OE-level fit that lasts.

Ideal when

• You are refreshing a high-mileage suspension or chasing rear-end noises
• Upgrading to new dampers and want the top hardware to match
• You prefer genuine-brand components over pattern alternatives

Fitment and compatibility

For BMW 5-Series E39 models built 09/1995 to 07/2003, including:

• Petrol: 520i, 523i, 525i, 528i, 530i, 535i, 540i
• Diesel: 520d, 525td, 525d, 525tds, 530d

Location: rear axle upper mount in the suspension turret.

Professional fitting

For installation, we recommend MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Compatibility check before dispatch

Add your UK registration or the last 7 digits of your VIN at checkout and we will verify fitment for your exact 5-Series before shipping.

Product details

• Part number: Bilstein 12-117123
• Range: Bilstein B1 support bearing and service component
• Manufacturer: Bilstein
• EAN: 4025258492021
• UPC: 651860492025

Helpful tips

• Replace in pairs on the rear for even wear and consistent ride quality
• Torque all fasteners with the vehicle at ride height to minimise bush preload

Search terms customers use

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