Bilstein 33-52-6-780-199 B4 OE Replacement Rear Shock Absorber

The Bilstein 33-52-6-780-199 is a B4 Series OE Replacement rear shock absorber engineered to restore factory ride quality and handling dynamics. Carrying Bilstein's internal catalog reference 19-135052, this shock is built to exact original equipment specifications, making it a direct, no-modification-required replacement for compatible BMW and ALPINA models.

The Bilstein B4 series is the brand's benchmark OE replacement line — manufactured in the same facilities and to the same tolerances as original equipment components. It delivers consistent damping force across all driving conditions, from city commuting to highway travel, without altering the vehicle's original ride height or suspension geometry.

Key Features:

• OE-spec construction — manufactured to meet or exceed original equipment standards for a factory-correct fit and feel
• Gas pressure monotube/twin-tube design — provides reliable, fade-resistant damping performance
• Rear axle position — direct replacement for the factory rear shock absorber
• OEM cross-reference: 33 52 6 780 199 / 33 52 6 775 376 / 33 52 6 784 978 / 33 52 6 771 729 / 33 52 6 772 927
• Bilstein catalog number: 19-135052
• Corrosion-resistant finish for extended service life
• Drop-in installation using factory mounting points — no special tools required
• Limited lifetime warranty against manufacturer defects

When worn rear shocks go unaddressed, drivers experience increased body roll, reduced braking stability, and accelerated tire wear. Replacing them with the Bilstein B4 restores the precise, confident handling the vehicle was designed to deliver — like new, from day one.