HomeSuspension > Suspension, Springs and Related ComponentsUnity 31-511700 Air Spring to Coil Spring Conversion Kit - Rear
Part #: 31-511700

Unity 31-511700 Air Spring to Coil Spring Conversion Kit - Rear

Pre-assembled Complete Strut Assembly Conversion Kit, Rear
22 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$383.86Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Pre-assembled Complete Strut Assembly Conversion Kit, Rear
Fitment: Jaguar, XJ, Super V8, Vanden Plas, XJ8, and XJR
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Unity Rear Air to Coil Spring Conversion Kit

The Unity Pre-assembled Complete Strut Assembly Conversion Kit offers a reliable solution for Jaguar owners looking to convert their rear suspension from air springs to coil springs. Designed specifically for Jaguar Super V8, Vanden Plas, XJ, XJ8, and XJR models, this kit ensures compatibility and ease of installation.

  • Rear position air spring to coil spring conversion kit
  • Compatible with Jaguar Super V8, Vanden Plas, XJ, XJ8, and XJR models
  • Pre-assembled complete strut assembly for straightforward installation
  • Part number 31-511700 for precise identification
  • Designed to maintain proper suspension geometry and ride height

Detailed Product Description

The Unity 31-511700 Pre-assembled Complete Strut Assembly Conversion Kit is engineered to replace the rear air spring suspension system with a coil spring setup on select Jaguar models. This conversion kit is ideal for vehicles experiencing air suspension failures or for owners seeking a more conventional suspension system. The pre-assembled nature of the strut assembly simplifies the installation process, reducing labor time and potential errors. Each component is designed to fit the rear suspension position precisely, ensuring proper alignment and performance on Jaguar Super V8, Vanden Plas, XJ, XJ8, and XJR vehicles.

Common Applications and Problem Solving

  • Addresses air spring failure or leaks in rear suspension
  • Eliminates costly air compressor and air line repairs
  • Restores consistent ride height and vehicle stability
  • Reduces maintenance complexity associated with air suspension
  • Improves reliability for older Jaguar models with aging air systems

Installation Notes and Tips

Installation of the Unity 31-511700 kit requires basic suspension knowledge and tools. Since the kit comes pre-assembled, it minimizes the need for component assembly during installation. It is important to verify vehicle compatibility with Jaguar Super V8, Vanden Plas, XJ, XJ8, and XJR models before beginning. Proper torque specifications should be followed to maintain suspension integrity. Alignment check after installation is recommended to ensure optimal handling and tire wear.

About the Pre-assembled Complete Strut Assembly Conversion Kit Line

The Unity Pre-assembled Complete Strut Assembly Conversion Kit product line focuses on providing ready-to-install suspension conversion solutions. By offering fully assembled strut units, this line reduces installation complexity and time for technicians and vehicle owners. The 31-511700 part is a representative product designed specifically for rear suspension conversion on select Jaguar models, maintaining suspension geometry and ride quality while replacing air springs with coil springs.

Quality Assurance

Unity manufactures the 31-511700 conversion kit to meet industry standards for durability and fitment. While specific warranty details are not provided, Unity products typically undergo quality control to ensure reliable performance. Users should consult product documentation or contact Unity directly for warranty information related to this part.

BrandUnity
Part Number31-511700
PositionPre-assembled Complete Strut Assembly Conversion Kit, Rear
PositionRear

This part fits 22 vehicles. Search below:

YearMakeModelPositionNotes
2010JaguarXJRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2009JaguarSuper V8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2009JaguarVanden PlasRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2009JaguarXJ8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2009JaguarXJRRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2008JaguarSuper V8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2008JaguarVanden PlasRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2008JaguarXJ8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2008JaguarXJRRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2007JaguarSuper V8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2007JaguarVanden PlasRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2007JaguarXJ8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2007JaguarXJRRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2006JaguarSuper V8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2006JaguarVanden PlasRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2006JaguarXJ8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2006JaguarXJRRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2005JaguarSuper V8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2005JaguarXJ8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2005JaguarXJRRearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2004JaguarXJ8RearPre-Assembled Complete Strut Assembly Kit Replacing Air/Electronic Strut Assemblies; Pre-assembled Complete Strut Assembly Conversion Kit
2004JaguarXJRRearPre-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.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.