ZF 4HP transmission

The 4HP is a 4-speed automatic transmission family from ZF with a hydrodynamic torque converter and with a hydraulic or electronic control for passenger cars. The Simpson planetary gearset types were first introduced in 1980, the Ravigneaux planetary gearset types in 1984 and were produced through 2003 in different versions and were used in a large number of vehicles. In 1995, a Simpson planetary gearset type with a much more compact design was introduced. These transmissions were available until 2010.

Key data

+ Gear ratios Model FirstDeliv-ery Gear Total Span Avg.Step Components Nomenclature R 1 2 3 4 Nomi-nal Effec-tive Cen-ter Total perGear GearsCount Cou-pling Gear-sets Input ShaftDiameter Simpson planetary gearset types with 3 planetary gearsets 4 H P 4HP 22Large Engines 1980 3  Gearsets4 Brakes3 Clutches 22 mm 4HP 22Small Engines 1980 Ravigneaux planetary gearset types with 2 planetary gearsets combined in 1 compound planetary gearset 4HP 14 1984 2  Gearsets2 Brakes3 Clutches 14 mm 4HP 18 1987 18 mm Simpson planetary gearset types with 2 planetary gearsets 4HP 16 2004 2  Gearsets2 Brakes3 Clutches 16 mm 4HP 20 1995 20 mm

+ Nomenclature Position Value Meaning 4HP 22FLE 4 Number of gears 4HP 22FLE H Hydraulic converter 4HP 22FLE P Planetary gearsets 4HP 22FLE Torque rating 4HP 22FLE FH Front-engine · Rear-engine · 4HP 22FLE LQ Longitudinal engine · Transverse engine · 4HP 22FLE EA Electronic control · Four-wheel drive ·

1980: Simpson planetary gearset types— first design with 3 planetary gearsets —

Design

The 1979 oil crisis, as the second one after the 1973 oil crisis, called for a swift response. In 1980 ZF came up with a four-speed version by simply adding a 3rd planetary gearset, which is placed behind the original 3HP gearsets from 1973. This makes the transmission complex and costly to manufacture, long, and bulky, so it is only suitable for longitudinal installation.

4HP 22

Rear-wheel drive configuration. It was produced for vehicles with rear wheel drive or 4X4 layout. Introduced in 1980, it was produced through 2003, and has been used in a variety of cars from BMW, General Motors, Jaguar, Land Rover, Maserati, Peugeot, Porsche, and Volvo.

4HP 22EH

Four-wheel drive configuration · Electronic control

4HP 22HL

Rear-engine design · Rear-wheel drive configuration

4HP 24

Rear-wheel drive configuration. It was introduced in 1987 and was used in a variety of cars from Audi, BMW, Jaguar, and Land Rover.

4HP 24A

Four-wheel drive version

1984: Ravigneaux planetary gearset types— design with 2 planetary gearsets combined in 1 compound planetary gearset —

Design

The overdrive is provided by an additional shift element, which is integrated in the original 3HP gearsets from 1963. This keeps the design compact, so it is suitable for different transmission models either for longitudinal or transverse installation.

4HP 14

Front-engine design. It was introduced in 1984 and produced through 2001 for Citroën, Peugeot, and Daewoo Front-wheel drive vehicles. The electronic control makes controlled power shifts and various shift programs possible.

4HP 18

Designed for both longitudinal and transverse installation. It was introduced in 1987, and produced through 1998, it was used in a variety of cars from Alfa Romeo, Audi, Citroën, Dodge, Eagle, Fiat, Lancia, Porsche and Saab.

4HP 18FL

Front-engine design · Longitudinal engineTransmissions Parts catalogue : https://global-uploads.webflow.com/5d4ad27f935075baaeb45f60/5fb67c61d98f56954b343a33_2020.11.18%20APC%20Catalog%20without%20images.pdf

4HP 18FLA

Front-engine design · longitudinal engine · quattro Four-wheel drive. Audi Quattro 4x4

4HP 18FLE

Front-engine design · Longitudinal engine · Electronic control · Audi FWD, non-quattro4HP18 FLA Transmission filter : https://www.allomatic.com/transmission-filters/515426

4HP 18Q

Front-engine design · Transverse engine · Front-wheel drive

4HP 18QE

Front-engine design · Transverse engine · Front-wheel drive · Electronic control

4HP 18EH

Front-engine design · Transverse engine · Front-wheel drive · Electronic control

1995: Simpson planetary gearset types— second design with 2 planetary gearsets —

Design

In 1995, a new design made 4-speed transmissions in a Simpson planetary gearset layout without an additional planetary gearset possible, so the overdrive is provided by an additional shift element, which is integrated in the original 3HP gearsets from 1973. This keeps the design compact, so it is suitable for different transmission models either for longitudinal or transverse installation.

All models have an electronic control.

4HP 16

Designed for use in vehicles with Front-wheel drive and a Transverse engine. The transmission is operated via selector lever and possibly also via switch. It has a controller slip Lock-up clutch.

4HP 20

Front-engine design · Transverse engine · Front-wheel drive configuration. It was introduced in 1995 and has been used in a variety of cars from Citroën, Lancia, Mercedes-Benz, Peugeot, and Renault. The maximum torque capacity is .

Applications

+ Variants and applications Model Car Model 1980: Simpson planetary gearset types with 3 planetary gearsets 4HP 22 1984–1988 BMW E30 316 M10/B18 1987–1988 BMW E30 316i M10/B18 1988–1994 BMW E30 316i M40/B16 1984–1987 BMW E30 318i M10/B18 1987–1994 BMW E30 318i M40/B18 1982–1993 BMW E30 320i M20/B20 1982–1986 BMW E30 323i M20/B23 1985–1990 BMW E30 324d M21/D24 1987–1990 BMW E30 324td M21/D24 1983–1988 BMW E30 325e M20/B27: Type A 1985–1993 BMW E30 325i M20/B25: Type A 1986–1992 BMW E30 325ix M20/B25: Type A 1981–1987 BMW E28 518i M10/B18: Type B 1981–1987 BMW E28 520i M20/B20: Type B 1986–1988 BMW E28 524d M21/D24: Type B 1983–1987 BMW E28 524td M21/D24: Type B 1983–1988 BMW E28 525e M20/B27: Type A 1981–1987 BMW E28 525i M30/B25: Type A 1981–1987 BMW E28 528e M20/B27 1981–1987 BMW E28 528i M30/B28: Type A 1983–1984 BMW E28 533i M30/B32 1984–1988 BMW E28 535i M30/B34: Type A 1983–1989 BMW E24 633CSi M30/B32 1983–1987 BMW E24 635CSi M30/B34 1983–1984 BMW E23 733i M30/B32 1984–1987 BMW E23 735i M30/B34: Type A 1984–1987 BMW E23 745i (South African version) M88/3: Type A 1988–1992 BMW E34 520i M20/B20: Type A 1988–1992 BMW E34 524td M21/D24: Type B 1988–1990 BMW E34 525i M20/B25: Type A 1988–1992 BMW E34 530i M30/B30: Type A 1988–1993 BMW E34 535i M30/B35: Type A 1986–1994 BMW E32 730i M30/B30: Type A 1986–1992 BMW E32 735i M30/B35: Type A 1986–1992 BMW E32 735iL M30/B35: Type A 1988–1992 Chevrolet Opala 2.5 (151): Type A 1988–1992 Chevrolet Opala 4.1 (250): Type A 1987–1993 Jaguar XJ40 3.6 1994–1997 Jaguar X300 3.2 1987–1991 Jaguar XJS 3.6 1997 Land Rover Defender 90 V8 4.0 L North America Spec 1998 Land Rover Defender 90 V8 4.0 L Defender 50th Special Edition 1992–1999 Land Rover Discovery (Series I) V8 3.9 L 1999–2002 Land Rover Discovery (Series II) V8 4.0 L 1987–2002 Range Rover (except 4.6 L) 1984–1985 Lincoln Continental 2.4 L (BMW-Steyr turbodiesel) 1986–1991 Lotus Excel SA Twin Cam 4 Cyl Lotus 2.2 L 180 bhp 1988–1997 Maserati Biturbo 2.5 V6 1988–1997 Maserati Biturbo 2.8 V6 1994–1998 Maserati Quattroporte IV 2.8 V6 1986–1997 Peugeot 505 2.0 (XNA. K. Legg, Peugeot 505 Owners Workshop Manual, Haynes Publishing Group, 1989, , p. 132Octavio Trentini, Reparación y ajuste de automoviles Peugeot 505, Cosmopolita publisher, 1995, , p. 148, 149Peugeot 505 User manual, Peugeot, 1987, Paris, p. 146, 147): Type A 1986–1997 Peugeot 505 2.0 (ZEJ): Type A 1986–1997 Peugeot 505 2.2 (N9T): Type A 1986–1997 Peugeot 505 2.2 (ZDJPeugeot 505 User manual, Peugeot, 1987, Madrid, p. 109): Type A 1986–1997 Peugeot 505 2.5 (XD3Peugeot 505 User manual, Peugeot, 1987, Madrid, p. 131): Type A 1986–1997 Peugeot 505 2.8 (ZN3J): Type A 1987–1989 Peugeot 604 2.5 1984–1985 Volvo 740 GL, GLE 2.3 (non turbo) B230F: Type B 1986– Volvo 740 GL, GLE 2.3 (non turbo) B230F: Type A 1984–1987 Volvo 740 2.4 L Turbo-Diesel D24T 1986–1991 Volvo 760 2.3 L 1985–1989 Volvo 760 2.3 Turbo B230ET 1983–1989 Volvo 760 GLE 2.4 Turbo-Diesel D24T/D24TIC 1990–1994 Volvo 940 2.3 (non turbo, Europe & Australia) B230FB 1990–1998 Volvo 940 2.4 L Turbo-Diesel D24TIC 4HP 22EH 1999–2004 Land Rover Discovery (Series II) TD5 Diesel 4HP 22HL 1989–1993 Porsche 911 Carrera II 3.6 1993–1998 Porsche 993 3.6 4HP 24 1986–1994 BMW E32 750i M70/B50 1986–1994 BMW E32 750iL M70/B50 1986–1994 Jaguar XJ40 1989–1994 BMW E31 850Ci M70/B50 1989–1994 BMW E31 850i M70/B50 1989–1996 Jaguar XJS 4.0 1995–1997 Jaguar XJ6 (X300) 4.0 1994–2002 Range Rover V8 4.6 L 1999–2002 Range Rover V8 4.0 L 2003–2004 Land Rover Discovery V8 4.6 L 4HP 24A 1990–1991 Audi V8 3.6 V8 1992–1994 Audi V8 4.2 V8 1994–1996 Audi D2 A8 4.2 V8 quattro 1995–1997 Audi S6 4.2 V8 C4 100 1984: Ravigneaux planetary gearset types with 2 planetary gearsets combined in 1 compound planetary gearset 4HP 14 1984–1993 Citroën BX 1.6 1985–1993 Citroën BX 1.9 1987–1993 Peugeot 205 1.6 1987–1993 Peugeot 205 1.9 1987–1989 Peugeot 305 1.5 1987–1996 Peugeot 309 1.6 1987–1996 Peugeot 309 1.9 1987–1997 Peugeot 405 1.6 1987–1997 Peugeot 405 1.8 1987–1997 Peugeot 405 1.9 1990–1996 Volvo 400 series"Vraagbaak Volvo 440/460/480 Benzinemodellen" by P.H. Olving, April 2011, 1991–1998 Rover 800 (XX/R17) 1992–1993 Citroën ZX 1.6 1992–1998 Citroën ZX 1.8 1993–1998 Citroën Xantia 1.8 1993–1998 Citroën Xantia 2.0 1993–2001 Peugeot 306 1.8 1993–2001 Peugeot 306 2.0 1996–1997 Daewoo Nubira 1.5 1996–1997 Daewoo Nubira 1.8 1996–1997 Daewoo Leganza 1.8 1996–1997 Daewoo Leganza 2.0 4HP 18FL 1988–1992 Renault 25 V6 2.8 1988–1992 Eagle Premier/Dodge Monaco V6 3.0 4HP 18FLA 1992–1994 Audi S4 (C4) 5-cyl 2.2 Turbo 1992–1994 Audi 100 (C4) CS 2.8 V6 1995–1997 Audi A6 (C4) quattro 2.8 V6 1995–1997 Audi S6 (C4) quattro 5-cyl 2.2 Turbo 4HP 18FLE 1991–1994 Porsche 968 4-cyl 3.0 1992–1993 Audi 100 2.8 V6 1992–1994 Audi 100 CS 2.8 V6 1992–1994 Audi 100 S 2.8 V6 1995–1997 Audi A6 2.8 V6 1995–1997 Audi A6 2.5 TDI (AEL) (AAT) 4HP 18Q 1987–1989 Fiat Croma 2.0 1987–1989 Fiat Croma 2.5 1987–1998 Saab 9000 1989–1993 Alfa Romeo 164 V6 3.0 1989–1998 Citroën XM 2.0 1989–1998 Citroën XM V6 3.0 1989–1994 Fiat Croma 2.0 1989–1994 Lancia Thema 2.0 1989–1992 Lancia Thema V6 3.0 1989–1999 Peugeot 605 2.0 1989–1999 Peugeot 605 V6 3.0 4HP 18QE 1993–1997 Alfa Romeo 164 V6 3.0 1993–1994 Lancia Thema V6 3.0 4HP 18EH 1994–1998 Lancia Kappa V6 3.0 1995: Simpson planetary gearset types with 2 planetary gearsets 4HP 16 2004–2008 Suzuki Reno 2.0L 4L 2004–2008 Suzuki Forenza 2.0L 4L 2004–2006 Suzuki Verona 2.0L 4L 4HP 20 1996–2004 Peugeot 406 V6 3.0 1996–2003 Mercedes-Benz Vito 1996–2003 Mercedes-Benz V-Class 1997–2001 Citroën Xantia V6 2.9 1997–2001 Citroën XM V6 2.9 1997–1999 Peugeot 605 V6 2.9 1998–2002 Alfa Romeo 166 V6 2.5, V6 3.0 1998–2005 Lancia Kappa, Phedra V6 3.0 1998–2008 Renault Laguna 3.0 1998–2002 Renault Espace V6 3.0 1999–2000 Renault Safrane V6 3.0 24V 2001–2008 Citroën C5 and Citroën C8 V6 2.9, Peugeot 807 V6 2.9 and Peugeot 607 with DW12 2.2 HDi 2004–2010 Peugeot 407 with DW12 2.2 HDi 2003–2006 Fiat Ducato 2.8 JTD (244 Series)

See also

List of ZF transmissions

References

External links