Bilstein B4 OE Replacement Suspension Strut Cartridge

1990–1992 BMW 735i

Part #: 21-031144

Overview

The Bilstein B4 OE Replacement Suspension Strut Cartridge is designed to restore the original ride quality and handling of your 1990-1992 BMW 735i. Engineered with precision and durability in mind, these strut cartridges provide a direct replacement for worn or damaged factory components, ensuring your vehicle maintains its factory performance standards. Whether you're aiming to preserve your vehicle's original driving experience or restore it to its factory condition, these dampers are an excellent choice for discerning BMW owners.

Built for drivers who value safety, comfort, and reliability, the Bilstein B4 OE Replacement Strut Cartridges help maintain optimal suspension geometry, improve ride comfort, and support consistent handling. They are ideal for daily drivers, enthusiasts restoring their vehicle, or anyone seeking to uphold the factory ride and handling characteristics of their BMW 735i.

Key Features

The Bilstein B4 OE Replacement Dampers incorporate advanced engineering and high-quality materials to deliver performance that meets or exceeds OE standards. These features include:

• Designed specifically for the 1990-1992 BMW 735i to ensure perfect fitment and compatibility.
• OE-grade damping technology that restores original ride comfort and handling characteristics.
• High-quality steel construction with corrosion-resistant coatings for long-lasting durability.
• Bilstein's proprietary monotube design for consistent damping performance and improved heat dissipation.
• Precision-engineered piston and valving to provide a smooth, controlled ride and responsive handling.
• Manufactured to meet or exceed OE specifications, ensuring safety and reliability.
• Easy installation as a direct replacement, with no modifications required.
• Backed by Bilstein's reputation for quality and performance in the automotive suspension industry.

Construction & Design

The Bilstein B4 OE Replacement Strut Cartridges feature a robust monotube design, which is renowned for its consistent damping performance and durability. The high-strength steel housing is coated to resist corrosion, ensuring longevity even in challenging driving conditions. The internal piston and valving are precisely calibrated to match the factory damping characteristics, providing a seamless integration with your vehicle's existing suspension system. This design not only restores original ride quality but also enhances stability and safety by maintaining proper suspension geometry.

Installation & Fitment

The Bilstein B4 OE Replacement Dampers are designed as direct-fit replacements for the original equipment, making installation straightforward for qualified technicians or experienced DIY enthusiasts. No special modifications, cutting, or drilling are required. The cartridges fit precisely into the existing suspension assembly, restoring original handling and comfort without the need for additional tuning or adjustments. Proper installation ensures optimal performance and longevity of the suspension system.

• Easy bolt-on installation with factory mounting points
• No need for special tools or modifications
• Designed to restore original ride quality and handling

What's Included

• One pair of OE Replacement Suspension Strut Cartridges for the front or rear (specify as needed)
• Installation instructions (if applicable)

Ideal For

• BMW 735i owners seeking to restore factory ride and handling
• Drivers experiencing worn or leaking factory dampers
• Enthusiasts performing suspension rebuilds or restorations
• Anyone looking for a reliable, high-quality OE replacement suspension component