We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Unity 30-540000 rear conversion kit in a box

Unity

Unity Rear Conversion Kit 30-540000

SKU CH-YNED-ND3ET

Converts rear air suspension to coil springs on 1989-2011 Lincoln Town Car, 1992-2011 Ford Crown Victoria and 1989-2011 Mercury Grand Marquis

  • Converts air suspension to reliable coil springs for 1989-2011 Lincoln Town Car
  • Fits 1992-2011 Ford Crown Victoria and 1989-2011 Mercury Grand Marquis
  • Backed by over 50 years of aftermarket manufacturing experience
  • Designed for trouble-free installation and long-lasting reliability
  • Unity part number 30-540000 ensures correct fitment

Unity Rear Conversion Kit 30-540000

This Unity rear conversion kit replaces air suspension with a passive steel spring setup on compatible vehicles. It is designed for owners of 1989-2011 Lincoln Town Car, 1992-2011 Ford Crown Victoria, and 1989-2011 Mercury Grand Marquis models seeking a reliable alternative to factory air ride systems.

Vehicles served and limitations

The kit fits the three named full-size sedans across the model years listed. It does not suit owners who want to keep their original air suspension active or who drive any other make, model, or year outside the specified application range.

Steel spring conversion

The defining specification is the retrofit from air ride to a passive steel spring suspension. This conversion eliminates air bags and compressors, delivering a fixed-rate setup built for long-lasting reliability and trouble-free installation.

Highlights

  • Converts air suspension to reliable coil springs for 1989-2011 Lincoln Town Car
  • Fits 1992-2011 Ford Crown Victoria and 1989-2011 Mercury Grand Marquis
  • Backed by over 50 years of aftermarket manufacturing experience
  • Designed for trouble-free installation and long-lasting reliability
  • Unity part number 30-540000 ensures correct fitment

Specifications

BrandUNITY

Questions about this item

How does this kit change the rear suspension once it is installed on the car?

It replaces the factory air springs with passive steel springs so the rear suspension no longer relies on air pressure.

What mounting interface does the kit use to fit the vehicle?

It bolts to the original spring seats and shock mounts on the rear axle and chassis.

Which models have the correct rear mounting points for this kit?

The kit fits 1989-2011 Lincoln Town Car, 1992-2011 Ford Crown Victoria and 1989-2011 Mercury Grand Marquis.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.