Editing TorqueFlite (section)

====A500 (40RH/42RH/40RE/42RE/44RE)====
The ''A500'', later renamed ''40RH'' and ''42RH'' (hydraulically controlled governor pressure) and ''40RE'', ''42RE'', ''44RE'' (electronically controlled governor pressure, 1993-up), was an A904 derivative used in trucks and vans. Introduced in the 1988 model year on a limited basis, it was the first light-duty Chrysler four-speed automatic and was placed behind the 3.9&nbsp;L and 5.2&nbsp;L engines for light-duty purposes. Forward direct clutch drum (same as the A998) usually has a four friction disc pack - an A999 forward direct clutch drum with the five friction disc pack does interchange. A bolt-in low/reverse overrun clutch assembly (shared with the A904 derivatives manufactured after 1988) uses a roller clutc,h which is shared with the GM THM200 and THM2004R. Much like the later production A904 with a wide ratio gear, a double wrap low-reverse band is used. An extension housing mounted ([[New Venture Gear|New Process]] built) overdrive unit was bolted to the rear of the case to provide a total of four forward speeds; the extension housing and its internals interchange with the 46-48RH/RE (A518/618) - when overhauling the overdrive unit transmission rebuilders usually would use replacement parts from the A518/618 overdrive section since the A500 internals are light duty e.g. number of friction discs and thick pressure plates. 

The overdrive housing (RWD/2WD) uses an output shaft yoke commonly shared with the A727 and its later derivatives, except for the A618/48RE. Electronic governor pressure was phased in during the middle of the 1993 model year, where it was renamed as the A500SE - Jeep Grand Cherokees equipped with the 4.0L used the A500SE/42RE since the middle of the 1993 model year replacing the AW4. Oil pans used with the A500SE/42RE are similar in design to the one used in the A500, with a clearance area for the shift solenoid. The pan and filter were updated during the 1998 model year with some Dodge applications, which have a deeper oil pan and a redesigned oil filter that is held with two valve body screws (the single oil port filter does interchange with the older A500 and A904 derivatives along with the oil pan). This transmission was replaced by the 42RLE in 2004.

Gear ratios:
{| class=wikitable
!1
!2
!3
!4
!R
|-
|2.74
|1.54
|1.00
|0.69
|2.21
|}

Applications:
*1989-2001 Dodge Ram pickup 150/1500 V6/V8(2WD)
*1989-2003 [[Dodge Ram Van]] B150/B250/B350 V6/V8
*1989-2003 [[Dodge Dakota]]
*1993-2004 [[Jeep Grand Cherokee#First generation (ZJ; 1993)|Jeep Grand Cherokee]] I6
*1996-1998 Jeep Grand Cherokee 5.2 V8
*1999-2003 Jeep Grand Cherokee 3.1 TD
*1998-2000 [[Dodge Durango]] 5.2L V8 (4WD (98-99) or 2WD (99-00))