Bilstein 34-000243 B6 Performance Front Shock Absorber - Fits Classic BMW E3, E9 Coupe, E12 5 Series - Front Strut Insert, Gas Pressure Monotube, 51mm OE Replacement

Bilstein B6 Front Damper Insert for Classic BMW - Part No. 34-000243

Give your vintage BMW the control it deserves with the Bilstein B6 front strut cartridge, part number 34-000243. This uprated gas-charged single-tube insert drops straight into the original 51 mm front strut housing on selected BMW E3 saloons, E9 coupés and E12 5 Series. If you are refreshing tired suspension, restoring period handling or looking for a fast-road improvement without harming ride quality, this OE-spec performance damper delivers crisp steering, stronger road holding and composed braking on British roads.

At MJ Modifications we have installed these on our own projects and many customer cars. The feedback is consistently positive - tighter body control, better turn-in, more confidence on uneven B-roads and motorway stability that feels secure without being harsh. It is a brilliant upgrade for daily use and weekend drives alike.

Highlights

• Direct-fit front strut insert - replaces the original cartridge in 51 mm housings
• Gas-pressurised monotube architecture for consistent damping and fade resistance
• Upside Down single-tube layout for strength, precision and stability
• Works with factory coil springs and top mounts - no need to change spring rates
• Sharper response, reduced roll and pitch, improved grip and traction in the wet and dry
• Engineered for everyday use and spirited road driving with OE-level reliability
• Mounting style - bottom plate with top pin connection for a straightforward install

Vehicle applications

Fits the front axle of the following classic BMW models when equipped with 51 mm strut housings:

• BMW E9 2.5-3.2 Coupé 09.67 - 03.76
  • 2.5 CS, 2800 CS, 3.0 CS, 3.0 CSi, 3.0 CSiL
• BMW E3 2500-3.3 10.68 - 04.77
  • 2500, 2800, 2.8 L, 2.8 Bavaria, 3.0 S, 3.0 L, 3.0 Bavaria, 3.0 Si, 3.2 Li, 3.3 L
• BMW E12 5 Series 03.72 - 08.81
  • 518, 520, 520 i, 525, 528

Why enthusiasts choose this damper

• Transforms a classic BMW’s front end with modern, confidence-inspiring control
• OE-equivalent fit and finish with performance-oriented valving
• Ideal for restoration, road upgrades and replacing worn original shocks
• Balanced comfort and control for UK tarmac, lanes and motorway cruising

Technical details

• Axle position - front
• Design - strut insert cartridge
• Damping - gas pressure, single-tube Upside Down
• Mounting - bottom plate, top pin
• Strut body outer diameter - 51 mm

Part numbers

• Bilstein reference - 34-000243
• EAN - 4025258613709
• UPC - 651860613703

Fitting and setup

Professional installation recommended. MJ Modifications can supply and install at our Warwickshire workshop. For a fitting quote or to book, email info@mjmodifications.co.uk.

Tip - for balanced handling, replace dampers in axle pairs.

Compatibility check before dispatch

We can confirm suitability before shipping. Add your UK registration or the last 7 of the VIN at checkout and we will verify that 34-000243 is correct for your BMW E3, E9 or E12 with 51 mm struts.

Proven on the road

Customers report smoother control over bumps, flatter cornering and a more planted front end. If you want an OE-quality, performance-focused front insert for your classic BMW without compromising comfort, this Bilstein B6 cartridge is an excellent choice.

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