4A9x family

From Mitsipedia
Revision as of 22:36, 29 September 2018 by Cartman02au (talk | contribs)
4A91 installed in a RG Colt

The 4A9x family was designed by Mitsubishi to replace the Orion engine in its small vehicles. Mitsubishi designed it to be lightweight, compact and powerful. All 4A9x engines feature an all-aluminium design with chain driven double overhead camshafts, four valves per cylinder (16 in total) and MIVEC on the intake camshaft. It is the first Mitsubishi engine to use a high pressure die-cast aluminium block.

The engine has been built at the joint Mitsubishi Daimler-Chrysler facility - MDC Power in Germany since 2003 and the Shenyang Aerospace Mitsubishi Motors Engine Manufacturing Co Ltd in China since 2009.



Displacement 1332cc (1.3 litres)
Bore 75.0mm
Stroke 75.4mm
Compression Ratio 10.5:1
Output 73 kW @ 6000 rpm, 125 Nm @ 4000 rpm

Used in

  • Smart ForFour (2004-2006)



Displacement 1499cc (1.5 litres)
Bore 75.0mm
Stroke 84.8mm
Compression Ratio 10.0:1
Output 80 kW @ 6000 rpm, 145 Nm @ 4000 rpm

Used In

  • Mitsubishi Colt (RG)
  • Smart ForFour (2004-2006)



Displacement 1590cc (1.6 litres)
Bore 75.0mm
Stroke 90.0mm
Compression Ratio 11.0:1
Output 86 kW @ 6000 rpm, 154 Nm @ 4000 rpm

Web Links

3 cylinder
3A9x 3A90 3A91 3A92
4 cylinder
Neptune 4G41 4G42
Orion 4G11 4G12 4G13 4G15 4G17 4G18 4G19 G4ED
Sirius 4G61 4G62 4G63 4G64 4G67 4G69
Astron 4G51 4G52 4G53 4G54
Astron II Original Revised
Saturn 4G30 4G31 4G32 4G33 4G37
4G9x 4G91 4G92 4G93 4G94
4A9x 4A90 4A91 4A92
4B1x 4B10 4B11 4B11T 4B12
Inline 6
Saturn 6 6G34
6G7x 6G71 6G72 SOHC 12v 6G72 SOHC 24v 6G72 DOHC Early 6G74 Late 6G74 Ralliart 6G74 6G75
6A1x 6A10 6A11 6A12 6A13
6B3x 6B31
8A80 8A80