The 4HP is a 4-speed Automatic transmission family with a hydrodynamic Torque converter with an electronic hydraulic control for passenger cars from ZF Friedrichshafen AG. In selector level position "P", the output is locked mechanically.

The 4HP22EH and 24 EH was used by Landrover in the P38 Range Rover and the Disco 2. All our boxes are fully rebuilt including the valve body and come complete with a rebuilt torque converter. Product Options. If you would like a ZF High Capacity Sump fitted to your gearbox, please see more info here. Heavy Duty ZF Autoboxes

In 1986, the gearbox was slightly modernized due to the appearance of an electronic control unit, and a 4HP22EH version appeared for all-wheel drive Land Rover Discovery and Range Rover. Separately, we note the 4HP22HL modification for the Porsche 911 with a rear-mounted unit.

Sep 18, 2006 · AFAIK, the HP24 was the P38 tranny and has significant electronic controls, but the clutches can be fitted to an HP22. Again, AFAIK, the clutches are supposedly stronger to deal with the greater horsepower. Supposedly, there were better clutches installed in Jaguar and BMW vehicles. I believe the heavier clutches were found in mid '90s 740i BMWs.

Parts for 4HP22: compare prices for Overhaul Kits, Friction Kits, Bushings, Bearing, Solenoid Kits, Valve body, Torque converters, Planetary Gear kits, Filters, Gaskets, Seals, Pressure Plates, Differentials, Sensors, Valves.

May 25, 2013 · However I've decided to start a new one which sticks to recording the process of preparing and installing a 4HP22 in a Rover P6B, for the future easy reference of all. I would like to keep this thread on course, but of course comments are very welcome.

May 27, 2009 · ZF 4HP22, 4HP22EH, & 4HP24 Information Post by Frybrid 524td » Sep 23, 2011 7:33 PM I recognize that a manual transmission swap is the preferred course of action for our cars but, regardless, I thought that this information might be useful to some out there that prefer their automatic transmissions.

Transmission repair manuals ZF 4HP22 / 4HP24, diagrams, guides, tips and free download PDF instructions. Fluid capacity and type, valve body and solenoids charts.

'84+ 4-SPEED AUTOMATIC TRANSMISSION: *NOTE: DOES NOT INCLUDE THE EXTENSION HOUSING SEAL FOR LAND ROVER MODELS. SEAL IS SOLD SEPARATELY: SEE ITEM …

May 8, 2009 · To start viewing messages, select the forum that you want to visit from the selection below. I have a 92 BMW 735i Rebuilt Transmission for sale (ZF 4 HP 22 EH). Roughly 5k. Service done by Aamco. Complete with paper work. $350 OBO. No decent offer will be refused. Bump for quick sale. Last edited by hotrodcoupes; 05-09-2009 at 03:03 PM .