Would a 1993 Lexus ls400 rear air shocks fit 1991 rear?

The rear air shocks from a 1993 Lexus LS400 will not fit directly onto a 1991 Lexus LS400. While both models are part of the first-generation LS400 lineup, there were some significant differences between them, particularly in the rear suspension system.

The 1991 LS400 uses a different type of rear suspension setup compared to the 1993 LS400. The 1991 model features a self-leveling rear suspension with Nivomat self-leveling struts, which combine shock absorbers and coil springs into a single unit. On the other hand, the 1993 LS400 introduced an updated rear suspension system with separate shock absorbers and coil springs, along with the introduction of optional rear air suspension.

Due to these differences, the mounting points, dimensions, and specifications of the rear air shocks are not interchangeable between the 1991 and 1993 LS400 models. Attempting to install the rear air shocks from the 1993 model onto the 1991 vehicle would require significant modifications and may not be feasible or safe.

Therefore, it is not recommended to use the 1993 Lexus LS400 rear air shocks on a 1991 LS400 without proper modification or consultation with a qualified automotive professional.