Engine Mitsubishi 4G63

The 4G63 engine is one of the most popular four-cylinder in-line engines, which was designed by the specialists of the Japanese company Mitsubishi. This power unit has about a dozen different modifications that have been installed on many Mitsubishi models.

The first modification 4G63 appeared back in 1981, and continues to be produced to this day with minor changes. The excellent technical characteristics of this motor are combined with its excellent reliability. The engines have a volume of 2.0 liters and power from 109 to 144 horsepower.

The engine has an old design, proven for decades, and therefore high reliability. The 4G63 has a cast iron cylinder block and an aluminum head for maximum overheating resistance.

The recommendations are simple: use high-quality engine oil and change it on time. Watch for oil leaks and change drive belts in a timely manner. Other defects occur less frequently and do not cause serious damage – neither to the engine, nor to the owner’s budget.

The 4G6 family also includes engines: 4G61, 4G62, 4G63T, 4G64, 4G67 and 4G69.

The engine was installed on:

  • Mitsubishi Delica III in 1989 – 1999;
  • Mitsubishi Eclipse 1G in 1990 – 1994; Eclipse 2G in 1994 – 1999;
  • Mitsubishi Galant A160 in 1980 – 1987; Galant E10 in 1983 – 1989; Galant E30 in 1987 – 1993; Galant E50 in 1992 – 1998; Galant EA0 in 1996 – 2003;
  • Mitsubishi L200 L020 in 1980 – 1986; L200 K30 in 1986 – 1996; L200 K70 in 1996 – 2006;
  • Mitsubishi Lancer CS0 in 2000 – 2007;
  • Mitsubishi Outlander CU0 in 2001 – 2006;
  • Mitsubishi Pajero L040 in 1982 – 1990;
  • Mitsubishi Space Runner N10 in 1991 – 1997;
  • Mitsubishi Space Wagon D00 in 1983 – 1991; Space Wagon N30 in 1991 – 1998; Space Wagon N50 in 1998 – 2004.


Production years since 1981
Displacement, cc 1997
Fuel system carburetor / single injection (4G63 SOHC 8V)
injector (4G633 SOHC 8V)
injector (4G631, 4G632, 4G636 SOHC 16V)
injector (4G635, 4G637 DOHC 16V)
Power output, hp 87 – 110 (4G63 SOHC 8V)
109 (4G633 SOHC 8V)
133 – 137 (4G631, 4G632, 4G636 SOHC 16V)
135 – 144 (4G635, 4G637 DOHC 16V)
Torque output, Nm 157 – 164 (4G63 SOHC 8V)
159 (4G633 SOHC 8V)
176 (4G631, 4G632, 4G636 SOHC 16V)
170 – 176 (4G635, 4G637 DOHC 16V)
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 85
Piston stroke, mm 88
Compression ratio 8.6 – 9.0 (4G63 SOHC 8V)
9.0 (4G633 SOHC 8V)
10.0 (4G631, 4G632, 4G636 SOHC 16V)
9.8 – 10.5 (4G635, 4G637 DOHC 16V)
Features no
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no (except for 4G63T, for which a separate article)
Recommended engine oil 5W-30
Engine oil capacity, liter 4.0
Fuel type petrol
Euro standards EURO 1 (4G63 SOHC 8V)
EURO 2 (4G633 SOHC 8V)
EURO 2/3 (4G631, 4G632, 4G636 SOHC 16V)
EURO 3/4 (4G635, 4G637 DOHC 16V)
Fuel consumption, L/100 km (for Mitsubishi Galant 1995)
— city
— highway
— combined
Engine lifespan, km ~400 000
Weight, kg 160

Disadvantages of the Mitsubishi 4G63 engine

  • Most of the problems with this motor are due to the use of low-quality oil;
  • First of all, this is expressed in jamming of the balancer shafts and a break in their belt;
  • A broken balancer belt often falls under the timing belt and the engine ends;
  • The balance shafts in front of the wedge vibrate and destroy the supports of the power unit;
  • Poor-quality or old grease significantly reduces the life of hydraulic lifters;
  • Another common problem: floating speed due to contamination of the throttle and idle speed controller;
  • Often there are complaints about cracks in the intake-exhaust manifolds.

1 thought on “Engine Mitsubishi 4G63”

  1. Antony Chihiya

    I want to order a Mitsibishi 4G63 engine, 2 Litre, Manual. Where can I get the suppliers so that I can order one. I reside in Zimbabwe, Kwekwe district.

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