I am just curious if all USDM 1990-1991 LS400's were equipped with Air Suspension?


Thanks - this is a simple one.

Nope. My 91 does not have Air. It was a factory option I believe.

no
10

Is it correct that UCF10 refers to standard suspension and ECF11 refers to air suspension for the 1st gen LS4?

no, although some say differently, the chassis code has nothing to do with the air suspension option.

ex-my genuine Lexus Repair manual for my old '95 said "Chassis code: UCF20" and had full instuctions for both air susp and coil-spring cars.

I think you will find that UCF-11 includes the air , just as the later model UCF-21 also had air , I don't think UCF-10 or UCF-20 had air .
I don't know what else came with the 11 code , but air was one .

i know a couple people who have a 93 w/oem air and a 96 w/oem air.

i have a 90, and it has air suspension. i'll be at the meet tonight in chino hills, you guys can check it out if you want!

Typically for Toyota (Lexus) ,a chassis code that ends in '1' simply indicates that it is a JDM model.

eg.
UCF10=Lexus LS400 (NAmerica) <> UCF11 = Toyota Celsior (JDM)
HJ60 = Toyota Landcruiser 60 Series (NA) <> HJ61 = Toyota Landcruiser 60 Series (JDM)

Good to know.

Wait... whoa, hold on for a second... I thought UCF11 was used to refer to the UCF10-Series II, as in the 93-94 LS400's? And UCF10 was the 90-92 LS400's?

And about air suspension, it was an expensive option on all LS400's 90-94, so most of them in the States didn't have it. It was standard on Celsior's in Japan though.

so who is right?

^^

I have a 1991 Toyota Celsior and the chassis code is UCF11.

I'm not saying I am 100% positive on the '1' rule as it applies to Lexus but for every other Toyota I've seen, a chassis code ending in '1' is a JDM product.

I just checked my chassis code, and WITH air suspension, US-spec, it's UCF10.

I have a 1990 LS400 with AIR and its Us-spec UCF10