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The Mitsubishi 4M4 engine is a range of four-cylinder diesel piston engines from Mitsubishi Motors, first introduced in the second generation of their Montero/Pajero/Shogun SUVs. They superseded the previous 4D5 engine family, main differences are enlarged displacements and the utilization of one or two over-head camshafts. Originally available only as a 2835 cc intercooled turbo, detail improvements in 1996 and a larger 3.2 litre option in 1999 served to improve power, torque, fuel economy and emissions. The final version has 3.0 litres swept volume and Common rail direct injection.

This article does not cite any sources. (December 2009)

Mitsubishi 4M4 engine
Overview
Manufacturer	Mitsubishi Motors
Production	06/1994-
Layout
Configuration	Straight-4
Displacement	2.8–3.2 L (2,835–3,200 cc)
Cylinder bore	95 mm (3.74 in) 98.5 mm (3.88 in) 95 mm (3.74 in)
Piston stroke	100 mm (3.94 in) 105 mm (4.13 in) 105 mm (4.13 in)
Block material	Cast iron
Valvetrain	SOHC, DOHC 4 valves x cyl.
Compression ratio	16.0:1-21.0:1
Combustion
Turbocharger	The 4M40 used the TD04 turbo from 1994 to 1997, it was replaced by the TF035 in 1998 and was used for 2 years. The 4M41 used the TF035 from 1999 to 2007 and was replaced later with the IHIRHV5. Only the IHIRHV5 turbo was a Variable Geometry type turbo on the 4M41. Both the 4M40T and 4M41 Were Intercooled .
Fuel system	Zexel Mechanical or Electronically controlled Distributor type injection pump Denso Common rail direct injection
Fuel type	Diesel
Cooling system	Water-cooled
Output
Power output	59–147 kW (80–200 PS)
Torque output	198–441 N⋅m (146–325 lb⋅ft)

4M40

Inline 4-cylinder SOHC, bore x stroke = 95 mm × 100 mm (3.74 in × 3.94 in), 2,835 cc (173.0 cu in), swirl combustion chamber

Naturally aspirated

Compression ratio 21.0:1, Zexel Distributor type injection pump, 59 kW (80 PS) at 4000 rpm, 198 N⋅m (146 lbf⋅ft) at 2000 rpm

Applications:

• 1996-1999 Canter (lightest-duty), 69 kW (93 hp), 191 N⋅m (141 lb⋅ft) @ 2000 rpm

Intercooled Turbo Gen 1

Compression ratio 21.0:1, 92 kW (123 hp) at 4000 rpm, 294 N⋅m (217 lbf⋅ft) at 2000 rpm

Applications:

• 1993-1999 Pajero (MK II, MKII Blister Fender)
• 1996-2013 Mitsubishi Type 73 Light Truck
• 1998-2003 Triton/L200 Sport 4x4
• 1999-2009 Mitsubishi Colt LDV 4x4

Intercooled Turbo Gen 2

Compression ratio 21.0:1, Zexel Electronically controlled or Mechanical controlled distributor type Injection Pump, 103 kW (138 hp) at 4000 rpm, 314 N⋅m (232 lbf⋅ft) at 2000 rpm

Applications:

• 2003-2006 Triton/L200 Sport 4x4
• 1994-2006 L400 Delica

4M41

Inline 4-cylinder DOHC 16 valve, Bore x Stroke 98.5 mm × 105 mm (3.88 in × 4.13 in), 3,200 cc (200 cu in)

Intercooled turbo

Compression ratio 17.0:1, Zexel Electronic control type distributor type pump (direct injection inside diesel tube) or Denso Common Rail direct injection, 121 kW (162 hp) at 4000 rpm, 351 N⋅m (259 lbf⋅ft) at 2000-3000 rpm

Applications:

• 1999-2006 Pajero (MK III)
• 2005-2011 Triton/L200/Strada
• 2006- Pajero (Philippine Domestic Market)
• 2008-2011 Pajero Sport/Montero Sport

Variable geometry intercooled turbo

Compression ratio 17.0:1 or 16.0:1, Denso Common Rail Direct Injection

Applications:

• 2006-2009 Pajero (MK IV), 125 kW (168 hp) (M/T: 118 kW (158 hp)) at 3800 rpm, 382 N⋅m (282 lbf⋅ft) at 2000 rpm
• 2010–2022 Pajero, (MK IV) 147 kW (197 hp) at 3800 rpm, 441 N⋅m (325 lbf⋅ft) at 2000 rpm

4M42

Inline 4-cylinder DOHC 16 valve, Bore x Stroke 95 mm × 105 mm (3.74 in × 4.13 in), 2,977 cc (181.7 cu in), direct injection

OAT , Applications:

• 2001-2007 Mitsubishi Fuso Canter

CR , Applications:

• 2007-2010 Mitsubishi Fuso Canter, 92 kW
• 2007-2010 Mitsubishi Fuso Canter, 107 kW

See also

• List of Mitsubishi engines
• List of Mitsubishi Fuso engines

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