Unity 15-525600 Air Suspension Spring - Rear

Rear Air Suspension Spring for BMW Wagon Leveling

Restore rear ride height control with this Unity air suspension spring/bag, part number 15-525600. It is built for rear applications on select BMW wagon models with rear leveling, including BMW 530xi, 535xi, 535i, and 535i xDrive.

Key Features

• Rear air suspension spring/bag for leveling-equipped wagon applications
• OE-specification construction for direct replacement use
• Engineered by Unity Automotive, a suspension-focused aftermarket manufacturer
• Fits select BMW 530xi, 535xi, 535i, and 535i xDrive wagon models
• Cross-reference: BMW 37126765602

Product Details

Unity Automotive’s Air Suspension Spring/Bag line is focused on suspension replacement parts built to match original equipment requirements. This rear air suspension spring, part number 15-525600, is intended for BMW wagon models equipped with rear leveling, where maintaining consistent rear ride height is critical for handling, comfort, and load support. If you are replacing a worn rear air spring on a BMW 530xi, 535xi, 535i, or 535i xDrive wagon, this component provides a direct-fit service part for the listed applications.

Unity has spent decades in the aftermarket suspension market and builds its products around OEM specifications. That approach helps ensure the part aligns with the original vehicle setup and supports confident installation on the correct rear position.

Vehicle Fitment

• Fits 2009-2010 BMW 535i, rear, wagon with rear leveling; Air Suspension Spring/Bag
• Fits 2009-2010 BMW 535i xDrive, rear, wagon with rear leveling; Air Suspension Spring/Bag
• Fits 2008 BMW 535xi, rear, wagon with rear leveling; Air Suspension Spring/Bag
• Fits 2006-2007 BMW 530xi, rear, wagon with rear leveling; Air Suspension Spring/Bag

Common Issues This Part Can Address

• Rear of vehicle sitting lower than normal
• Loss of rear ride-height leveling function
• Air spring wear, cracking, or leakage
• Uneven rear stance on wagon suspension systems
• Suspension warning symptoms related to rear air support

Installation Notes and Tips

Confirm the vehicle is equipped with rear leveling and verify the rear position before ordering. Compare the original part number 37126765602 and the vehicle’s build details to the fitment list. After installation, inspect the air suspension system for leaks and verify proper ride height operation.

Quality Assurance

Unity Automotive states that its suspension parts are built to OEM specifications and backed by a customer satisfaction commitment. Part number 15-525600 is part of Unity’s Air Suspension Spring/Bag product line, developed from the company’s long-standing focus on aftermarket suspension components.