Bilstein 40-221618 Air Suspension Spring - Rear Right

Bilstein B3 OE Replacement Air Spring for BMW X5

Restore the rear suspension feel of your BMW X5 with the Bilstein B3 OE Replacement (Air) air suspension spring, part number 40-221618. This rear right air bag is built for 2000-2006 BMW X5 applications and connects directly to the original vehicle connectors for a clean, modification-free replacement.

Key Features

• OE replacement air suspension spring for the rear right position
• Black painted finish
• Direct-connect design for original BMW air suspension connections
• Part of the Bilstein B3 OE Replacement (Air) series
• Built for 2000-2006 BMW X5 rear suspension service
• Part number 40-221618 for accurate ordering and fitment lookup

Product Details

Bilstein’s B3 OE Replacement (Air) line focuses on restoring factory-style suspension performance on select European vehicles. This air suspension spring is engineered as a direct replacement for the original rear right air bag on the BMW X5, helping return the vehicle to its original ride characteristics without requiring changes to the factory setup. Bilstein’s OE supplier background in air suspension systems supports consistent fit and construction quality for this application. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Rear suspension sag on a BMW X5
• Air spring leakage or loss of air pressure
• Uneven ride height at the rear right corner
• Factory ride quality that has changed over time
• Replacement needs for worn OE air suspension components

Installation Notes

Fits 2000-2006 BMW X5, rear right. Verify the vehicle’s suspension configuration and connector style before installation. Use the original mounting points and factory connectors for a direct replacement process. Confirm the part number 40-221618 against the removed component and vehicle application before service.

Quality Assurance

Bilstein manufactures this B3 OE Replacement (Air) spring to meet OE-level expectations for European vehicle suspension service. The design is intended to match the original air suspension connection points and restore factory-style operation on the BMW X5.