Bilstein B4 19-220970 Rear Shock Absorber/Shocker/Damper/Strut for BMW 6 Series E63/E64 (2003-2010) – OEM Quality Stock Replacement Shock, Gas Pressure Twin-Tube – Fits 630i 645Ci 650i 635d Coupe & Convertible – Standard Suspension (non-EDC)

Bilstein B4 19-220970 Rear Damper for BMW 6 Series E63 E64

Bring back that crisp, factory-fresh feel at the back end of your 6 Series with the Bilstein B4 rear suspension unit, part number 19-220970. This genuine-spec gas pressure twin tube shock is a straight swap for the rear axle on BMW E63 Coupe and E64 Convertible models, including 630i, 645Ci, 650i and 635d. Expect composed handling, confident road holding and smooth comfort on British B-roads and motorways.

At MJ Modifications we fit these regularly and the feedback is consistently positive. Customers report tighter control over bumps, improved stability under braking and a more settled ride without harshness. If your car feels floaty, bouncy or unsettled, this rear shock is the sensible OE-quality solution that restores the balance of the chassis.

Why it is a smart choice

• Original equipment quality from Bilstein with dependable performance
• Gas pressure twin tube design for consistent damping and durability
• Direct bolt-on fit for the rear axle with the correct mount types
• Restores stock ride comfort and confident handling
• Ideal for daily driving, fast road use and UK conditions
• Trusted by workshops and enthusiasts for long service life

Technical details

• Fitting position: Rear axle
• Design: Spring-bearing damper
• Mounting: Bottom eye and top pin
• System: Twin tube
• Type: Gas pressure

Part numbers and IDs

• Part number: Bilstein 19-220970
• Also searched as: BILSTEIN-19-220970
• EAN: 4025258703592
• UPC: 651860702995
• Manufacturer: Bilstein

Vehicle fitment

• BMW 6 Series E63 Coupe 2003 to 2010
  • 630i, 645Ci, 650i, 635d
• BMW 6 Series E64 Convertible 2004 to 2010
  • 630i, 645Ci, 650i, 635d

Search-friendly terms customers use

BMW 6 Series rear strut, BMW E63 rear shocker, E64 back shock, rear suspension damper, stock replacement shock BMW 630i 645Ci 650i 635d, OEM quality rear shock, factory-spec rear shock BMW 6er, Bilstein B4 19 220970, gas pressure rear shock BMW, twin tube rear unit, BMW 6 Series standard suspension shock, direct replacement rear shock, bolt-on rear damper E63 E64, BMW 6 Series coupe cabriolet rear shock absorber.

Compatibility check

We verify fitment before dispatch. Add your UK registration number or the last 7 of your VIN at checkout and we will confirm this Bilstein B4 19-220970 matches your specific 6 Series.

Professional fitting

Prefer expert installation? MJ Modifications offers professional fitting in Warwickshire. Request a quote at info@mjmodifications.co.uk.

What you can expect

• Sharper turn-in and better composure over rough surfaces
• Reduced bounce and improved traction out of corners
• Comfort that feels like the car did when new

Choose Bilstein B4 19-220970 to refresh the rear suspension on your BMW 6 Series and enjoy confident, consistent performance with OEM-level quality.