HomeSuspension > Suspension, Springs and Related ComponentsUnity 31-516200-FWD Air Spring to Coil Spring Conversion Kit - Rear
Part #: 31-516200-FWD

Unity 31-516200-FWD Air Spring to Coil Spring Conversion Kit - Rear

Pre-assembled Complete Strut Assembly Conversion Kit, Rear
⚙️ 6 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Pre-assembled Complete Strut Assembly Conversion Kit, Rear
🚗Fitment: Lexus, RX330, RX350, and RX400h
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Unity Air Spring to Coil Spring Conversion Kit

The Unity Pre-assembled Complete Strut Assembly Conversion Kit offers a reliable solution for Lexus RX330, RX350, and RX400h owners looking to convert their air suspension to a coil spring setup. Designed for forward-wheel drive models, this kit simplifies suspension upgrades and repairs.

  • Pre-assembled complete strut assembly for straightforward installation
  • Specifically engineered for Lexus RX330, RX350, and RX400h models
  • Converts air spring suspension to coil spring suspension
  • Part number 31-516200-FWD ensures precise fitment
  • Compatible with forward-wheel drive (FWD) Lexus vehicles

About the Pre-assembled Complete Strut Assembly Conversion Kit Line

The Unity Pre-assembled Complete Strut Assembly Conversion Kit line focuses on providing fully assembled suspension components that replace air springs with coil springs. This product line is designed to streamline the conversion process by delivering ready-to-install strut assemblies, reducing labor time and complexity for Lexus RX series vehicles equipped with air suspension systems.

Product Details and Compatibility

This air spring to coil spring conversion kit, part number 31-516200-FWD, is engineered to fit Lexus RX330, RX350, and RX400h models with forward-wheel drive. The kit replaces the original air suspension components with coil springs, offering a durable and maintenance-friendly alternative. The pre-assembled nature of the strut assembly ensures that all components are correctly aligned and ready for installation, minimizing potential fitment issues.

Common Applications and Problem Solving

  • Addresses air suspension failures common in Lexus RX330, RX350, and RX400h models
  • Eliminates costly air spring replacements by converting to coil springs
  • Improves suspension reliability and reduces maintenance needs
  • Resolves issues related to air compressor or air line leaks
  • Provides a stable and consistent ride height without air suspension complexity

Installation Notes and Tips

Installation of the Unity 31-516200-FWD conversion kit requires basic suspension knowledge and appropriate tools. Since the strut assembly is pre-assembled, it reduces installation time compared to assembling components separately. It is recommended to have a professional alignment performed after installation to ensure proper handling and tire wear. Verify compatibility with your Lexus RX model and drivetrain before beginning installation.

Quality Assurance and Warranty

Unity manufactures this conversion kit to meet OEM standards for fit and function. While specific warranty details are not provided, Unity products typically come with a limited warranty against defects in materials and workmanship. For detailed warranty information, consult the product documentation or contact Unity directly.

This part fits 6 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
2007LexusRX350FWDRearExcludes All Wheel Drive; Pre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2007LexusRX400hFWDRearExcludes All Wheel Drive; Pre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2006LexusRX330FWDRearExcludes All Wheel Drive; Pre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2006LexusRX400hFWDRearExcludes All Wheel Drive; Pre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2005LexusRX330FWDRearExcludes All Wheel Drive; Pre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2004LexusRX330FWDRearExcludes All Wheel Drive; Pre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.