Unity 15-560000 Air Suspension Spring - Rear

Rear Air Suspension Spring for Expedition and Navigator

Restore rear suspension support with this Unity air suspension spring/bag, part number 15-560000. It is built for rear applications on select Ford Expedition and Lincoln Navigator models, with OE-specification construction for a direct replacement approach.

Unity Automotive draws on more than 40 years in the aftermarket suspension market, with product development focused on OEM-style fit and consistent assembly quality. The Unity Air Suspension Spring/Bag line is built for drivers who need a rear suspension component that matches the original application and supports stable ride height.

Key Features

• Rear air suspension spring/bag for select applications
• Fits 2003-2006 Ford Expedition, rear
• Fits 2003-2006 Lincoln Navigator, rear
• OE-specification design for application-specific replacement
• Unity part number 15-560000
• Cross-references Ford OE 4L1Z5A891AA for the same application

Detailed Description

This Unity rear air suspension spring/bag is engineered for 2003-2006 Ford Expedition and 2003-2006 Lincoln Navigator models with rear air suspension. If you are searching for a rear air suspension spring for 2003-2006 Ford Expedition or a rear air suspension bag for 2003-2006 Lincoln Navigator, part number 15-560000 provides a direct-fit replacement option built around the original vehicle application.

As part of Unity Automotive’s Air Suspension Spring/Bag product line, this component reflects the brand’s focus on suspension parts manufactured to OEM specifications. That makes it a practical choice when replacing a worn rear air spring on an Expedition or Navigator and maintaining the vehicle’s original suspension geometry and ride support.

Common Problems This Part Can Address

• Rear end sagging from a worn air spring
• Uneven ride height at the back of the vehicle
• Loss of rear suspension support
• Air spring deterioration from age and road exposure
• Ride quality changes caused by a failing rear bag

Installation Notes and Tips

Confirm the vehicle is a 2003-2006 Ford Expedition or 2003-2006 Lincoln Navigator with rear air suspension before ordering. Match the original rear position and verify the OE reference 4L1Z5A891AA when comparing parts. Inspect related suspension components and air lines during replacement so the new spring/bag can be installed on a clean, properly prepared system.

Quality Assurance

Unity Automotive has over 40 years of aftermarket manufacturing experience and builds suspension components to OEM specifications. The brand emphasizes consistent assembly quality and customer satisfaction across its suspension product range.