Bilstein B4 21-031137 Front Shock Absorber / Strut Cartridge Insert for BMW 7 Series E32 1986-1994 730i 730iL 735i 735iL 750i 750iL V12 | OE Replacement Gas-Pressure Twin-Tube Front Axle Damper

Bilstein 21-031137 B4 Front Damper Insert for BMW E32 7 Series

Refresh the front end of your classic BMW with the Bilstein B4 21-031137 strut insert. This OEM-spec, gas-charged twin-tube front damper restores the smooth, stable ride and sharp steering response your E32 is known for, while delivering the durability and consistency that make Bilstein a favourite among enthusiasts.

Perfect for daily use and motorway miles, this front suspension insert brings back factory-level comfort, confidence under braking and dependable road holding without altering ride height. It is a direct-fit front axle solution that maintains original character and improves day-to-day drivability.

Why it is a superb upgrade

• OEM-quality replacement that brings back the planted, comfortable feel of a well-sorted 7 Series
• Gas-charged twin-tube design for consistent damping and reduced fade under load
• Accurate steering feedback and improved stability on rough roads and at speed
• Direct-fit front strut cartridge for straightforward installation with the correct mounting style
• Built for longevity and reliability for UK road conditions

We fit these regularly at MJ Modifications and use them on our own cars. Customers consistently report a calmer ride, better control and an OE-tight feel after fitting.

Vehicle fitment

BMW 7 Series E32 saloon and long wheelbase models:

• 730i, 730iL
• 735i, 735iL
• 750i, 750iL V12

Build years approx. 03.1985 to 10.1994.

Technical details

• Fitting position: Front axle
• Design: Suspension strut insert
• Mounting: Bottom plate, top pin
• System: Twin-tube
• Type: Gas pressure

Part numbers

• Bilstein part number: 21-031137
• EAN: 4025258471415
• UPC: 651860600246

Compatibility check

We verify fitment before dispatch. Add your UK registration or the last seven digits of your VIN at checkout so we can confirm this 21-031137 front damper is correct for your E32.

Professional fitting

Want it installed properly the first time. Book expert fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk. We recommend replacing front dampers in pairs for balanced handling and even tyre wear.

What you will notice

• Restored comfort without sacrificing control
• Reduced nose dive and better composure over bumps
• Confident, predictable handling in wet and dry conditions

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