Homeβ€Ί Suspension > Suspension, Springs and Related Componentsβ€Ί Unity 65390C Air Spring to Coil Spring Conversion Kit - Rear
Part #: 65390C

Unity 65390C Air Spring to Coil Spring Conversion Kit - Rear

Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit, Rear
βš™οΈ 60 vehicles fit this part
πŸ”
Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
$267.17Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
πŸ”„Free Returns*Wrong fit? No cost
πŸ›‘οΈ60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
πŸ”₯
βœ… In Stock Β· Ready To Ship Most orders ship same-day if ordered before 1pm CST.
βœ…OE Direct Replacement β€” Bolt-on fit, no modifications needed
πŸ“¦Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit, Rear
πŸš—Fitment: Buick, Cadillac, Oldsmobile, and Pontiac, 88, Bonneville, Delta 88, DeVille, Fleetwood, LeSabre, and Regency
πŸ”„Easy Returns β€” Return within 60 days for a full refund
🚚Fast Shipping β€” Most orders ship same business day before 1pm CST

Upgrade Suspension with Unity Air Spring to Coil Spring Conversion Kit

The Unity Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit offers a reliable solution for replacing air suspension components with a coil spring setup. Designed specifically for select Buick, Cadillac, Oldsmobile, and Pontiac models, this kit provides a durable alternative to air springs.

  • Converts electronic or passive air spring suspension to coil spring strut assembly
  • Compatible with Buick 88, LeSabre, and Regal models
  • Fits Cadillac DeVille, Fleetwood, and Seville models
  • Designed for Oldsmobile Delta 88 and Pontiac Bonneville, and Regency
  • Part number 65390C for precise identification and ordering

About the Unity Electronic to Passive Air Spring to Coil Spring Conversion Kit

This conversion kit is part of Unity's Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit product line, which focuses on providing effective solutions for vehicles originally equipped with air suspension systems. The kit enables a transition to a coil spring setup, which can simplify maintenance and improve reliability for older vehicles with air spring failures.

Product Description and Compatibility

The Unity 65390C conversion kit is engineered to replace air spring assemblies on specific GM vehicles, including Buick 88 and LeSabre, Cadillac DeVille and Fleetwood, Oldsmobile Delta 88, and Pontiac Bonneville and Regency models. This kit allows owners to convert their electronic or passive air suspension systems to a coil spring strut assembly, which can reduce complexity and potential air suspension issues. The part number 65390C ensures compatibility and ease of reference when sourcing replacement parts.

Common Applications and Problem Solving

  • Addresses air spring failure or leaks in Buick, Cadillac, Oldsmobile, and Pontiac models
  • Eliminates the need for costly air compressor and sensor repairs
  • Improves suspension reliability on vehicles with aging air suspension systems
  • Restores proper ride height and handling characteristics
  • Provides a long-term suspension solution for discontinued air spring components

Installation Notes and Tips

Installation of the Unity 65390C conversion kit requires suspension disassembly and replacement of the air spring assembly with the coil spring strut assembly. It is recommended to have the installation performed by a qualified technician familiar with air suspension systems and coil spring conversions. Proper alignment and torque specifications should be followed to ensure safe and effective operation.

Quality Assurance and Warranty

Unity manufactures this conversion kit to meet or exceed 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. Verify warranty terms with the supplier or manufacturer prior to installation.

This part fits 60 vehicles. Search below:

YearMakeModelPositionNotes
1999BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1999Oldsmobile88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1999PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1998BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1998Oldsmobile88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1998OldsmobileRegencyRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1998PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1997BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1997Oldsmobile88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1997OldsmobileRegencyRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1997PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1996BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1996Oldsmobile88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1996PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1995BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1995Oldsmobile88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1995PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1994BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1994Oldsmobile88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1994PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1993BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1993CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1993Oldsmobile88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1993PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1992BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1992CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1992CadillacFleetwoodRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1992Oldsmobile88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1992PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1991BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1991CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1991CadillacFleetwoodRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1991OldsmobileDelta 88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1991PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1990BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1990CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1990CadillacFleetwoodRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1990OldsmobileDelta 88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1990PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1989BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1989CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1989CadillacFleetwoodRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1989OldsmobileDelta 88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1989PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1988BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1988CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1988CadillacFleetwoodRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1988OldsmobileDelta 88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1988PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1987BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1987CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1987CadillacFleetwoodRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1987OldsmobileDelta 88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1987PontiacBonnevilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1986BuickLeSabreRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1986CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1986CadillacFleetwoodRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1986OldsmobileDelta 88RearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1985CadillacDeVilleRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring Strut Assembly Conversion Kit
1985CadillacFleetwoodRearKit Includes (2) Bare Struts (2) Dustboots with Bump Stop (2) Springs (4) Nuts Converting Air/Electronic to Standard Suspension; Kit Includes Resistors/Ride Light Bypass Kit; Electronic to Passive Air Spring to Coil Spring 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:

CK-7613

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