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Bilstein

Bilstein B4 19-323305 Rear Shock Absorber / Damper / Strut for BMW 3 Series G20 G21 & 4 Series G22 G23 G26 (Saloon/Touring/Coupe/Gran Coupe) - OE OEM Direct Fit Back Shock, Gas Pressure Twin-Tube, RWD & xDrive AWD Compatible

Bilstein B4 19-323305 Rear Shock Absorber / Damper / Strut for BMW 3 Series G20 G21 & 4 Series G22 G23 G26 (Saloon/Touring/Coupe/Gran Coupe) - OE OEM Direct Fit Back Shock, Gas Pressure Twin-Tube, RWD & xDrive AWD Compatible

£131.80
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Bilstein 19-323305 B4 Rear Suspension Damper for BMW 3 Series G20 G21 and 4 Series G22 G23 G26

Restore your BMW’s poise and comfort with the Bilstein B4 rear suspension unit, part number 19-323305. This factory-spec back axle damper is a straight swap for tired originals on selected BMW 3 Series G20 G21 and BMW 4 Series G22 G23 G26 models. If you are searching for a BMW rear shocker, rear strut replacement, back shock, BMW suspension repair or a genuine quality OEM alternative that bolts on like stock, this is the one to choose.

Engineered in Germany with gas pressurised twin tube construction, the B4 delivers balanced control, confident grip and smooth ride quality. Expect crisp steering response and stable braking without harshness. We run Bilstein B4 on our own cars and our customers consistently report excellent refinement, dependable performance and long service life.

Ideal for daily road use, commuting and fast road driving, this unit keeps your BMW feeling fresh and predictable. For best results and even tyre wear, replace rear dampers in pairs. Compatible with rear wheel drive and BMW all wheel drive xDrive variants where listed.

Key reasons to choose Bilstein B4 19-323305

  • Direct fit rear damper for the models below with original mounting points
  • Gas pressurised twin tube build for consistent damping and stability
  • OE grade materials and finish for factory feel and reliability
  • Restores comfort, traction and body control on the back axle
  • Great for petrol, diesel and hybrid trims including PHEV and MHEV where applicable
  • Works with xDrive and non xDrive applications as specified

Technical information

  • Position: Rear axle
  • Type: Gas pressurised damper
  • System: Twin tube
  • Mounting: Bottom eye, top pin
  • Spring seat: Not included

Compatibility

Typical search terms and fitment cues include BMW G20 G21 G22 G23 G26 rear damper, BMW 3 Series saloon and touring rear shocker, BMW 4 Series coupe, convertible and gran coupe rear strut, BMW xDrive rear suspension unit.

  • 3 SERIES
    • 3 (G20, G80) (11.18 -)
      • 318 i / 320 i 1.6 / 320 i / 320 i xDrive / 330 i / 330 i xDrive / M 340 i xDrive / M 340 i / 316 d / 318 d / 320 d / 320 d xDrive / 330 d / 330 d xDrive

    • 3 Touring (G21, G81) (07.19 -)
      • 320 e Plug-in-Hybrid / 330 e Plug-in-Hybrid / 330 e Plug-in-Hybrid xDrive / 318 i / 320 i / 330 i / 330 i xDrive / M 340 i xDrive / M 340 i Mild-Hybrid xDrive / 316 d / 316 d Mild-Hybrid / 318 d / 318 d Mild-Hybrid / 320 d / 320 d Mild-Hybrid / 320 d xDrive / 320 d Mild-Hybrid xDrive / 330 d / 330 d Mild-Hybrid / 330 d xDrive / 330 d Mild-Hybrid xDrive / M 340 d Mild-Hybrid xDrive

    • 3 Touring Van (G21) (07.19 -)
      • 320 i / 330 i / M 340 i xDrive / 320 d / 320 d Mild-Hybrid / 320 d xDrive / 320 d Mild-Hybrid xDrive / 330 d / 330 d xDrive
  • 4 SERIES
    • 4 Coupe (G22, G82) (07.20 -)
      • 420 i 1.6 / 420 i / 420 i xDrive / 430 i / 430 i xDrive / M 440 i Mild-Hybrid / M 440 i Mild-Hybrid xDrive / 420 d Mild-Hybrid / 420 d Mild-Hybrid xDrive / 430 d Mild-Hybrid xDrive / M440 d Mild-Hybrid xDrive

    • 4 Convertible (G23, G83) (11.20 -)
      • 430 i xDrive / M440 d Mild-Hybrid xDrive

    • 4 Gran Coupe (G26) (07.21 -)
      • M440 i Mild-Hybrid xDrive / 420 d Mild-Hybrid xDrive

Part numbers

  • Bilstein part number: 19-323305
  • EAN: 4025258879532
  • UPC: 651860887234

Fitting service

Professional installation available at MJ Modifications, Warwickshire. Request a fitting quote at info@mjmodifications.co.uk. We recommend renewing both rear dampers at the same time for balanced handling and stability.

Compatibility check before dispatch

To verify this Bilstein B4 rear damper 19-323305 suits your exact vehicle, we will confirm fitment prior to shipping. Provide your UK registration or the last 7 of your VIN at checkout for a fast match.

Common search terms

BMW rear shocker G20, BMW G21 suspension replacement, BMW G22 rear strut, BMW G23 back shock, BMW G26 rear suspension damper, BMW 320d 330d 330i M340i rear unit, BMW xDrive AWD rear damper, original equipment quality rear shock for BMW 3 Series and 4 Series, direct bolt on rear suspension, German engineered rear shock upgrade, comfort control stability BMW rear axle.

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