The VW EA153 family of 5-cylinder diesel engines was produced from 1990 to 2012 and was installed both on commercial models such as the Transporter, Crafter, and on the Touareg SUV. These diesel engines are divided into two generations: the first with a cast-iron block and the second with aluminum.
In 1990, 5-cylinder pre-chamber diesel engines appeared on the Transporter T4 minibus, which in fact were a modification of the Audi EA381 engines for a transverse arrangement. By design, there is a cast-iron cylinder block with an aluminum 10-valve SOHC head and a timing belt drive. They did not have a turbine, that is, the engines were atmospheric.
We know of only two such power units, and both of them were installed on the Transporter T4:
Based on these diesel engines, a series of 2.5-liter gasoline units was created. The engines were distinguished by the presence of an electronic system of distributed fuel injection Digifant.
In 1996, the 2nd generation of gasoline units with a Simos type injection system debuted, they also got a camshaft position sensor, and the compression ratio increased from 8.5 to 10.0.
There are 7 modifications of such power units and all of them are installed on T4 minibuses:
Already in 1995, they showed an updated 5-cylinder diesel engine with direct fuel injection. It was quite a typical power unit for its time with a cast-iron cylinder block, an aluminum 10-valve block head with hydraulic compensators, and a timing belt drive. Fuel injection was carried out using a Bosch VP37 high pressure fuel pump.
8 different turbodiesels were installed on the popular Transporter T4 minibuses:
The second generation of EA153 engines debuted in 2003 on the Transporter T5 minibus and was distinguished by a completely different aluminum cylinder block, timing gears and the Bosch Pumpe-Duse fuel system characteristic of Volkswagen diesel engines of that time. The block head with two valves per cylinder and hydraulic lifters remained unchanged. There were no atmospheric engines and all units were equipped with a variable geometry turbine.
Under the hood of the first generation Touareg SUV, these engines were located longitudinally:
But in the fifth generation of the Transporter minibus, these motors were installed transversely:
For the Phaeton and Touareg GP models, a 5.0-liter V-shaped 10-cylinder engine was created, which consisted of two diesel power units already described above in one. Here, too, an aluminum block, gear timing and cylinder head with two valves per cylinder. And pressurization was carried out with the help of two variable geometry turbochargers at once.
Only one engine modification was installed on the Phaeton executive class sedan:
And under the hood of the Touareg SUV, there are 5 different versions of this diesel engine at once:
The 2.5-liter VW AET or T4 2.5 gasoline engine was produced by the concern from 1996 to 2003 and was installed on the fourth generation Transporter, Caravelle, Multivan and California after restyling. There are also updated modifications of this power unit under the APL and AVT indices.
The 2.5-liter Volkswagen AAF or T4 2.5 gasoline engine was produced from 1990 to 1993 and was installed on the fourth generation of Transporter, Caravelle and Multivan minibuses. Updated versions of this power unit are known under their ACU, AEN and AEU indices.
The 2.4-liter VW AAB or T4 2.4 diesel engine was produced from 1990 to 1998 and was installed in the fourth generation of the very popular Transporter minibus. After updating to more stringent environmental standards, this motor received the AJA index.
The 2.5-liter Volkswagen AJT 2.5 TDI diesel engine was produced from 1998 to 2003 and was installed in the very popular Transporter family of minibuses in the back of the T4. This 5-cylinder diesel engine was the weakest in its series of engines and did not have an intercooler.
The 2.5-liter Volkswagen ACV 2.5 TDI diesel engine was produced from 1995 to 2003 and was installed on the most famous family of Transporter T4 minibuses. This 5-cylinder diesel was medium in power and the most common in the series.
The 2.5-liter Volkswagen AXG 2.5 TDI diesel engine was produced from 1998 to 2003 and was installed on minibuses such as the Transporter, Caravelle and Multivan in the back of the T4. The most powerful diesel engine in this family was distinguished by a variable geometry turbine.
The 2.5-liter Volkswagen BAC 2.5 TDI diesel engine was produced from 2003 to 2006 and was installed on the first generation of the Touareg GP SUV before restyling. This diesel engine has become infamous due to the shedding of the coating of the cylinder walls.
The 2.5-liter Volkswagen BPE 2.5 TDI diesel engine was produced from 2006 to 2009 and was installed on the first generation of the Touareg SUV in a restyled modification. This diesel engine is essentially an updated version of a similar engine under the BAC index.
The 2.5-liter Volkswagen AXD 2.5 TDI diesel engine was produced from 2003 to 2009 and was installed only on the popular T5 Transporter minibus line. There is a EURO 4 version of this 5-cylinder diesel engine with a particulate filter and the BNZ index.
The 2.5-liter Volkswagen AXE 2.5 TDI diesel engine was produced from 2003 to 2009 and was installed only on Transporter, Caravelle or Multivan minibuses in the T5 body. There is a modification of this unit for EURO 4 with a particulate filter and BPC index.
The 5.0-liter Volkswagen AJS or Phaeton V10 5.0 TDI engine was assembled from 2002 to 2006 and was installed only on the Phaeton executive class sedan until its first restyling. There were versions of this motor for the Touareg SUV with the index AYH, BKW, BLE, BWF.
The concern produced a 5.0-liter VW AYH or Touareg V10 5.0 TDI engine from 2002 to 2006 and installed only on the first generation of the popular Touareg SUV before restyling. There were modifications of this unit with a particulate filter under the BLE and BWF indices.
