Bilstein 34-003350 Suspension Strut Cartridge - Front

Bilstein B8 Performance Plus Front Strut Cartridge

Bilstein B8 Performance Plus front suspension strut cartridge 34-003350 is built for BMW drivers upgrading to lowering springs and sharper road control. With application-specific valving and a monotube internal design, it is engineered to improve handling response while maintaining the quality standards associated with Bilstein shock absorbers.

The yellow-painted finish and blue bellows boot identify the B8 Performance Plus line, a performance-focused damper series developed for lowered street applications. This part number, 34-003350, is a front strut cartridge for select BMW 3 Series and M3 models.

Key Features

• Bilstein B8 Performance Plus series front suspension strut cartridge
• Monotube internal design for consistent damping response
• Application-specific valve settings for lowered-spring setups
• Blue bellows boot and yellow painted finish
• Upper mount type: stem; lower mount type: housing
• Cross-reference part numbers include 8641-1021Sport and P36-0335

Detailed Product Overview

Bilstein B8 Performance Plus dampers are designed for vehicles running aftermarket lowering springs, making them a direct choice for drivers seeking firmer control and a more aggressive stance. On compatible BMW applications, the monotube construction helps deliver stable damping performance, while the tuned valving is matched to the demands of lowered suspension geometry. Part number 34-003350 is listed for front use on 1984-1987 BMW 325e, 1986-1987 BMW 325es, 1987-1991 BMW 325is, 1987-1993 BMW 325i, 1988-1991 BMW M3, 1991 BMW 318is, and 1991-1992 BMW 318i.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Part Helps Address

• Excessive body movement after lowering the suspension
• Reduced front-end control during cornering and braking
• Inconsistent damping feel from worn OE-style dampers
• Loss of ride precision on BMW 325i, 325is, and M3 front suspension setups
• Front suspension response that no longer matches upgraded springs

Installation Notes

Install on the front suspension only and verify the vehicle uses the listed BMW application before ordering. This strut cartridge is intended for use with aftermarket lowering springs, so spring height and suspension condition should be checked during service. Confirm the upper stem and lower housing mount configuration matches the original setup on the vehicle.

Quality Assurance

Bilstein tests B8 Performance Plus dampers to meet or exceed OE standards for quality and consistency. The B8 Performance Plus line is part of Bilstein’s performance suspension range, developed to support lowered BMW applications such as the E30 3 Series and E30 M3 with controlled, application-specific damping.