Bilstein B8 34-276440 Front Shock Absorber/Strut Insert Cartridge 51mm Housing - BMW E21 3 Series 320/6 320i 323i (1975-1983) & ALPINA E21 B6/C1 - Inverted Monotube Gas, Shortened Sport Damper for Lowering Springs

Uprated front strut insert for BMW E21 and ALPINA E21 B6/C1 — Bilstein B8 34-276440

Give your classic 3 Series the sharp, confidence-inspiring front end it deserves. This genuine Bilstein B8 front damper cartridge is a premium fast-road upgrade for the BMW E21 and ALPINA E21, delivering crisp turn in, flatter cornering and rock-steady control on B-roads without ruining ride quality. It is the ideal choice for cars running lowering springs or factory sport suspension, keeping correct spring preload and authority over body movements.

If you are searching for an E21 front strut cartridge that tightens steering feel, adds stability and complements a lowered stance, this shortened gas-charged insert is the proven solution. We have fitted these on customer cars and on our own builds and the feedback is consistently positive — more grip confidence, better front axle composure and a properly planted nose.

Why it is a standout upgrade

• Short-stroke sport damper engineered for lowered and performance-focused E21 setups
• Inverted single-tube construction for superb rigidity and precise feedback through the wheel
• Consistent, fade-resistant damping thanks to gas pressure technology
• Fast-road poise with day-to-day comfort — perfect for spirited B-road driving
• Direct-fit insert for 51 mm front housings for a clean, reliable install
• Enhanced control when paired with quality lowering springs or OE sport coils

Technical highlights

• Position: Front axle
• Type: Strut insert — gas pressure
• Design: Single-tube, inverted
• Mounting: Bottom plate with top pin
• Strut housing diameter: 51 mm

Vehicle applications

• ALPINA
  • B6 (E21) 2.8 — 03.78 to 03.83
  • C1 (E21) 2.3 — 03.80 to 07.83
• BMW 3 Series
  • E21 320/6, 320i, 323i — 06.75 to 03.84

Real-world results

Customers report markedly improved steering precision, reduced front-end float and a tighter, more predictable chassis balance. On fast cross-country drives the nose stays composed, giving you the confidence to carry speed and place the car exactly where you want it.

Part numbers

Bilstein reference: 34-276440

Alternate code: BILSTEIN-34-276440

EAN: 4025258805890

UPC: 651860810003

Fitting and support

Professional installation recommended. For expert fitting and setup, choose MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

We will confirm compatibility

We verify fitment before dispatch. Add your UK registration or the last 7 of your VIN at checkout to ensure you receive the correct front insert for your car.

Search-friendly terms customers use

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Buy with confidence

Choose the Bilstein B8 front insert to refresh and upgrade your E21’s front suspension with trusted quality, precise control and genuine driver engagement. A must-have for classic BMW enthusiasts seeking a responsive, durable and properly tuned front-end setup.