Bilstein B3 Rear Coil Spring 36-251261 – OE Replacement for BMW 1 Series F20/F21 & 3 Series F31 xDrive (Rear Axle) – Fits 120d xDrive, 320i/328i/330i/335i xDrive, M135i/M140i xDrive – Standard Ride Height

Bilstein 36-251261 BMW F20 F21 F31 B3 OE Replacement Rear Coil Spring

Restore factory ride quality, comfort and handling with the Bilstein B3 OE replacement rear coil spring for BMW 1 Series F20 F21 and BMW 3 Series F31 xDrive models. This direct-fit rear suspension spring is engineered to OE specifications for a perfect fit on BMW 120d xDrive, 320i xDrive and M135i xDrive, plus a wide range of other xDrive variants. Ideal as a like-for-like replacement for a worn, cracked or snapped rear spring, the Bilstein 36-251261 delivers dependable durability and consistent ride height without compromising original BMW driving dynamics.

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Why choose Bilstein B3 for your BMW

• OE quality and fitment for straightforward installation on the rear axle.
• Innovative designs including pigtail ends, minibloc shapes and central force design for quiet, precise operation.
• High quality chrome vanadium or chrome silicon steel for exceptional break resistance and strength.
• Hot set after forming to prevent height loss and maintain correct ride height over time.
• Carefully surface compressed and coated for long service life and corrosion resistance.
• Identical to series production spring design for genuine OEM feel and reliability.

Our team has fitted Bilstein B3 springs on countless BMWs and customer feedback has been consistently positive for ride comfort, stability and OE-level handling. If your BMW has failed an MOT due to a broken rear spring or you are experiencing sagging, clunks or an uneven stance, this OE replacement is a proven, high quality fix.

Fitment details

• Fitting position: Rear axle
• Part number: BILSTEIN-36-251261
• Manufacturer: Bilstein
• EAN: 4025258763435
• UPC: 651860766737

Vehicle compatibility

Designed for the following BMW xDrive models:

• BMW 1 Series
  • F20 1 Series Hatchback (07.11 - 06.19)
    • 120d xDrive
  • F21 1 Series 3-door (12.11 - )
    • M135i xDrive
    • M140i xDrive
• BMW 3 Series
  • F31 3 Series Touring Estate (07.12 - 06.19)
    • 320i xDrive
    • 328i xDrive
    • 330i xDrive
    • 335i xDrive

Related search terms: BMW F20 rear coil spring, BMW F21 rear suspension spring, BMW F31 Touring rear spring, xDrive AWD rear spring, M135i xDrive spring, M140i xDrive spring, 320i xDrive spring, 328i xDrive spring, 330i xDrive spring, 335i xDrive spring, OE replacement BMW spring.

Compatibility check before dispatch

We will verify compatibility before shipping. Provide your UK registration or the last 7 digits of your VIN at checkout to ensure the Bilstein 36-251261 is correct for your vehicle.

Professional fitting available

Need this Bilstein B3 rear coil spring fitted to your BMW F20, F21 or F31 xDrive We can help. Nforcd offers professional fitting in Warwickshire. Request a quote at Sales@nforcd.com.

Helpful notes

• We recommend replacing coil springs in axle pairs for balanced handling and even ride height.
• This is an OE-spec replacement designed to maintain standard ride height and factory comfort.