46RH valve body for 1990-1995, Sonnax-updated, dyno-tested and ready to install. Ships fast from the USA.
A 1990-1995 Dodge Ram running the 46RH that shuttle-shifts, won't hold overdrive, or has an inconsistent torque converter lockup usually has worn valve body bores behind it. This listing is a 46RH valve body built for this 2-solenoid, hydraulically governed unit, rebuilt with Sonnax's corrections for its known wear points and run on a dyno before it ships so shift feel and apply pressure are confirmed on the bench, not assumed.
The 46RH is the hydraulically governed version of this transmission family - the "H" stands for hydraulic, and that is the key difference from the later 46RE. Instead of a computer-controlled governor pressure solenoid, the 46RH uses a mechanical flyweight governor driven off the output shaft to generate governor pressure directly from road speed. The valve body itself only carries two solenoids: one for the overdrive clutch and one for the torque converter lockup clutch, each switched by a pressure switch rather than run through a governor pressure solenoid circuit. Those two solenoids and the hydraulic governor signal are what the valve body's spool valves use to time the overdrive and lockup apply - everything else about how pressure reaches the clutches and bands is mechanical, so worn bores show up as shift and lockup problems with no electronic governor code to point at them.
Because the 46RH has no governor pressure solenoid to throw a code, these symptoms have to be run down hydraulically rather than with a scan tool. Our 46RE/46RH common problems and fixes guide covers the elimination order - cooler flow, pump condition, then the valve body - and the same mainline and converter circuit wear points it describes apply directly to this hydraulically governed unit.
This valve body is built for the 1990-1995 46RH - the 2-solenoid, hydraulically governed generation that predates the electronically governed 46RE. If your transmission is a 1996-or-newer unit with a governor pressure solenoid and sensor, you need an electronic 46RE valve body instead; the full lineup, including the 1996-1999 46RE valve body, is on the 46RE/46RH parts collection page. Some 1990-1995 trucks carry an A518 case tag rather than a 46RH tag - they are the same unit, and our A518 valve body listing is the identical part under that older case code.
Drop the pan and change the filter in the same job so debris from the old valve body does not circulate into the new one, torque the bolts in Chrysler's sequence rather than corner to corner, and refill with ATF+4. There is no electronic relearn to run on this unit, but it is worth confirming the overdrive and lockup pressure switches operate cleanly after the swap since a sticking switch will mimic a valve body fault. A full 46RH/A518 master rebuild kit and a fresh pump are worth installing alongside the valve body if either is original to the truck.
| Transmission | 46RH |
| Year Range | 1990-1995 |
| Condition | Remanufactured / updated |
| Testing | Dyno-tested |
| Shipping | Ships from the USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 46RH carries two solenoids on the valve body - one for the overdrive clutch and one for the torque converter lockup clutch. Unlike the later 46RE, there is no governor pressure solenoid because the governor is mechanical.
The letter identifies how governor pressure is generated. The 46RH uses a mechanical flyweight governor driven off the output shaft. The 46RE replaced that with a computer-controlled governor pressure solenoid and sensor. The valve bodies are not interchangeable between the two.
Yes. A518 is Chrysler's older case code for this same 1990-1995 hydraulically governed transmission; 46RH is the later name for the identical unit.
No. 1996-and-newer trucks in this family use the electronically governed 46RE, which needs its own valve body with a governor pressure solenoid.
ATF+4.
The valve body is run on a test stand after assembly so shift feel and apply pressures are verified before it ships, rather than assumed from a visual rebuild.
