Changing my gearbox (730i), difference between 4HP22-EK and 4HP22-FS?

[7ertzen]

Guten abend.
Greetings from Norway.

Ich kann nicht Deutsch, deshalb schreibe ich Englisch.

Just bought a BMW 730i 1991 model with a broken gearbox.

The marking on my gearbox says 4HP22-FS.

I have been in contact with a guy who has a gearbox that is from an bmw 730i 1988 model, but his gearbox says 4HP22-EK.

I was wondering if there is any differense between these two, and if there is, what is the difference? Will it still work just fine on my car?

My gearbox is marked with4HP22-FS, but the other gearbox is marked with 4HP22-EK.
Does anyone know what the difference is, and if this one still will fit my car/engine?

Thanks, Simon

[Erich]

Hi Simon,
as I already told you on the US forum, the 1991 M30 has a 7-pin 4HP22, the other car from 1988 has a 8-pin 4HP22, Johan has a write up how to solve this
 BMW E32 - Driveline and Transmission - Gearbox Swap
I could find out the differences between 4HP22-FS and 4HP22-EK

4HP22-FS is for left hand drive cars and was used on the E32 730 from
September 1988- September 1989.
BMW # 24001218164 for remanufacured transmission type EH
Production Sep '88 -
Non exchangeable retrospectively
Old partnumber 24 00 1 217 369
New partnumber 24 00 1 218 163

 Rmfd automatic transmission EH 1218164 | BMW 24001218164

4HP22-EK
Nur in Fahrzeugen ohne Katalysator/only cars without catalysator
Linkslenker/left hand drive
Nur in Verbindung mit / only in connection with
· Oleinfullrohr/oil fillter tube 24 11 1 216 997
used up to ... — '88, Februar
 Automatikgetriebe 4HP22 BMW 7' E32, 730i (M30) ? BMW Teilekatalog

ZF 4HP-22/24 SERIES
MODEL “E-7” VALVE BODY WITH 5 SOLENOIDS
MODEL “E-9” VALVE BODY WITH 4 SOLENOIDS

The Electronic Control system was first introduced in 1986 and was incorporated into the totaly hydraulic 4HP-22 unit produced by ZF. It combines the hydraulic control of forward and reverse gear engagement, with electronic control for automatic upshifts from 1st thru 4th and automatic downshifts from 4th thru 1st gears. Three different versions of valve bodies have been used on BMW vehicles, with minor differences between them.

The 1st version, designated Early "E-7", has 5 solenoids on the valve body, was introduced in 1986 and used up thru 1989. This version includes a solenoid for reverse lockout.

The 2nd version, designated Late "E-7", has 5 solenoids on the valve body, was introduced in 1988 and used up thru Mid-1989. This version includes a solenoid for reverse lockout.

The 3rd version, designated "E-9", has 4 solenoids on the valve body, was introduced in Mid-1989 and used up thru 1994. This version uses a shift solenoid for the reverse lockout function.

Early "E-7" Models Only (5 Solenoid) Mode Switch Description
A rotary switch with three fixed positions and an indicator light in the instrument cluster for the 3-2-1 (M) mode when selected

Late "E-7" Models Only (5 Solenoid) Mode Switch Description
A three position slide switch with Digital display of the three individual positions in instrument cluster (E-S-M). The switch is a momentary contact and spring loaded to a neutral position

"E-9" Models Only (4 Solenoid) Mode Switch Description
A" mode (Economy and "M" mode (Manual). The Sport mode is selected with the range selector in position 3, 2, or 1 and "A" mode selected. The switch is a momentary contact and spring
loaded to a neutral position.