The 4HP 22 is a four-speed automatic transmission from ZF Friedrichshafen AG for passenger cars 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.

Specifications

Torque

The ZF 4HP 22 can handle from 100 to 380 NM of input torque.

Technical data

Gear Teeth and Ratios		Planetary Gearset Teeth[a]			Count	Total	Avg.
		Simpson		Simple
Model Type	First Delivery	${\displaystyle S_{1))$[b] ${\displaystyle R_{1))$[c]	${\displaystyle S_{2))$[d] ${\displaystyle R_{2))$[e]	${\displaystyle S_{3))$[f] ${\displaystyle R_{3))$[g]	Brakes Clutches	Ratio Span	Gear Step
Gear		R		1	2	3	4
Step ${\displaystyle i_{n-1}/i_{n))$		–R : 1			1 : 2	2 : 3	3 : 4
4HP 22 A · Big Engines	1980	35 73	35 73	31 83	4 3	3.4055	1.5045
Ratio ${\displaystyle i_{n))$		−2.0857 ${\displaystyle -{\tfrac {73}{35))}$		2.4795 ${\displaystyle {\tfrac {181}{73))}$	1.4795 ${\displaystyle {\tfrac {108}{73))}$	1.0000 ${\displaystyle {\tfrac {1}{1))}$	0.7281 ${\displaystyle {\tfrac {83}{114))}$
Step		0.8412			1.6759	1.4795	1.3735
4HP 22 B · Small Engines	1980	35 73	41 73	31 83	4 3	3.7539	1.5541
Ratio ${\displaystyle i_{n))$		−2.0857 ${\displaystyle -{\tfrac {73}{35))}$		2.7331 ${\displaystyle {\tfrac {6,983}{2,555))}$	1.5616 ${\displaystyle {\tfrac {114}{73))}$	1.0000 ${\displaystyle {\tfrac {1}{1))}$	0.7281 ${\displaystyle {\tfrac {83}{114))}$
Step		0.7631			1.7501	1.5616	1.3735
Ratio		${\displaystyle -{\tfrac {R_{1)){S_{1))))$	${\displaystyle {\tfrac {S_{1}(S_{2}+R_{2})+R_{1}S_{2)){S_{1}R_{2))))$		${\displaystyle {\tfrac {S_{2}+R_{2)){R_{2))))$	${\displaystyle {\tfrac {1}{1))}$	${\displaystyle {\tfrac {R_{3)){S_{3}+R_{3))))$

Applications

4HP 22

Rear-engine design rear-wheel drive configuration^[1]

• BMW
  • E30
    • 1984–1988 316 M10/B18
    • 1987–1988 316i M10/B18
    • 1988–1994 316i M40/B16
    • 1984–1987 318i M10/B18
    • 1987–1994 318i M40/B18
    • 1982–1993 320i M20/B20
    • 1982–1986 323i M20/B23
    • 1985–1990 324d M21/D24
    • 1987–1990 324td M21/D24
    • 1983–1988 325e M20/B27:^[2] Type A
    • 1985–1993 325i M20/B25:^[2] Type A
    • 1986–1992 325ix M20/B25:^[2] Type A
  • E28
    • 1981–1987 518i M10/B18:^[3] Type B
    • 1981–1987 520i M20/B20:^[3] Type B
    • 1986–1988 524d M21/D24:^[3] Type B
    • 1983–1987 524td M21/D24:^[3] Type B
    • 1983–1988 525e M20/B27:^[3] Type A
    • 1981–1987 525i M30/B25:^[3] Type A
    • 1981–1987 528e M20/B27
    • 1981–1987 528i M30/B28:^[3] Type A
    • 1983–1984 533i M30/B32
    • 1984–1988 535i M30/B34:^[3] Type A
  • E24
    • 1983–1989 633CSi M30/B32
    • 1983–1987 635CSi M30/B34
  • E23
    • 1983–1984 733i M30/B32
    • 1984–1987 735i M30/B34:^[4] Type A
    • 1984–1987 745i (South African version) M88/3:^[5] Type A
  • E34
    • 1988–1992 520i M20/B20: Type A
    • 1988–1992 524td M21/D24:^[6] Type B
    • 1988–1990 525i M20/B25 : Type A
    • 1988–1992 530i M30/B30 : Type A
    • 1988–1993 535i M30/B35:^[6] Type A
  • E32
    • 1986–1994 730i M30/B30:^[7] Type A
    • 1986–1992 735i M30/B35:^[7] Type A
    • 1986–1992 735iL M30/B35:^[7] Type A
• Chevrolet
  • Opala
    • 1988–1992 2.5 (151):^[8][9] Type A
    • 1988–1992 4.1 (250):^[8][9] Type A
• Jaguar
  • XJ40
    • 1987–1993 3.6
  • X300
    • 1994–1997 3.2
  • XJS
    • 1987–1991 3.6
• Land Rover
  • Defender
    • 1997 90 V8 4.0L North America Spec
    • 1998 90 V8 4.0L Defender 50th Special Edition
  • Discovery (Series I)
    • 1992–1999 V8 3.9L
  • Discovery (Series II)
    • 1999–2002 V8 4.0L
  • Range Rover
    • 1987–2002 (except 4.6)
• Lincoln
  • Continental
    • 1984–1985 2.4 litre (BMW-Steyr turbodiesel)
• Lotus
  • Lotus Excel
    • Excel SA 1986 –1991 Twin Cam 4 Cyl Lotus 2.2L 180bhp
• Maserati
  • Biturbo
    • 1988–1997 2.5 V6
    • 1988–1997 2.8 V6
  • Quattroporte
    • 1994–1998 2.8 V6
• Peugeot
  • 505
    • 1986–1997 2.0 (XN,^[10][11][12]): Type A
    • 1986–1997 2.0 (ZEJ^[10][12]): Type A
    • 1986–1997 2.2 (N9T,^[12]): Type A
    • 1986–1997 2.2 (ZDJ^{[10][11][12][13]}): Type A
    • 1986–1997 2.5 (XD3^[11][14]): Type A
    • 1986–1997 2.8 (ZN3J^[12]): Type A
  • 604
    • 1987–1989 2.5
• Volvo
  • 740
    • 1984–1985 GL, GLE 2.3 (non turbo) B230F:^[15] Type B
    • 1986–after GL, GLE 2.3 (non turbo) B230F:^[16] Type A
    • 1984–1987 2.4L Turbo-Diesel D24T^[17]
  • 760
    • 1986–1991 2.3L
    • 1985–1989 2.3 Turbo B230ET
    • 1983–1989 GLE 2.4 Turbo-Diesel D24T/D24TIC : ^[18]
  • 940
    • 1990–1994 2.3 (non turbo, Europe & Australia) B230FB
    • 1990–1998 2.4L Turbo-Diesel D24TIC

4HP 22EH

Four-wheel drive configuration^[1]

• Land Rover
  • Discovery (Series II)
    • 1999–2004 TD5 Diesel

4HP 22HL

Rear-engine design rear-wheel drive configuration^[1]

• Porsche
  • 1989–1993 Porsche 911 Carrera II 3.6
  • 1993–1998 Porsche 993 3.6