48RE Solenoid Kit 1994-99, new and ready to install. Fits the 48RE. Ships fast from the USA.
Plenty of parts counters still call this transmission the A518, and plenty of owners searching for a fix use that name too. This listing carries the A518 reference, and it is aimed at the 1990s Dodge Ram trucks whose four-speed has gone from dependable to unpredictable: a heavy diesel that will not pull into fourth with a trailer on, a V8 pickup that starts out in second, or a truck that drives around town in one gear with the dash showing a code. The kit replaces the whole electrical side of the valve body plus the parts a pan drop uses up. Laid out in the photo are the dual overdrive and lockup solenoid block on its sleeved harness, the governor pressure solenoid, the governor pressure sensor with the early oval-style plug, a governor body gasket, a felt-media filter, the pan gasket, two springs and a clip.
The A518 name covers a family. The RE versions in late-1990s Rams (46RE behind gas engines, 47RE behind the 5.9L Cummins and 8.0L V10) replaced the old spinning governor with a pair of electrical parts on the valve body transfer plate. The governor pressure solenoid sits in line pressure and, under PCM control, lets through just enough oil to act as governor pressure on the 1-2 and 2-3 shift valves. The sensor beside it reports that pressure, and the fluid temperature with it. Fourth gear and converter lockup are separate electric commands to the overdrive and converter coils in the solenoid block, which is why a truck can shift 1-2-3 normally and still never reach overdrive.
On these trucks the solenoids are powered by a transmission control relay that the PCM only energizes with the engine running, so do your electrical checks with it running and check that circuit before condemning parts. Then compare desired governor pressure against actual on a scan tool and a low-range gauge. Pressure that cannot follow the command says solenoid; a mismatch between gauge and scan tool says sensor or wiring. If shifting is fine but fourth or lockup is missing, test the two coils in the solenoid block. Our overdrive and TCC solenoid guide and Ram 2500 shift problems guide show where to look.
The listing spans 1994-99, but the governor parts in this kit only belong in electronic-governor transmissions, which the references cover from 1996. A 1994 or 1995 truck with no governor solenoid and sensor on the transfer plate has an earlier hydraulic governor and should not get this kit. Sonnax's identification notes the sensor plug changed shape for the 2000 model year; this kit carries the earlier plug. For a 2000 truck use the 2000 solenoid kit. Compare your sensor, filter and case connector to the photo before you start, or send us the year and VIN. Browse every RE part on the 48RE collection page.
With the pan and filter off, the governor body comes away from the transfer plate with its retainer plate. Pry the M-clip to free the sensor, pull the solenoid straight out, and fit new O-rings. The solenoid block is screwed to the valve body; free its case connector by removing the shoulder bolt at the 3-4 accumulator housing and hang onto that bolt. Governor body screws and filter screws go to 35 in-lb, the pan to 13 ft-lb. Finish with the line and throttle pressure adjustments from the service manual, fill with ATF+4, and road test while watching governor pressure. A reference such as the ATSG 46RE/47RE/48RE manual keeps the steps in front of you.
| Fits | 48RE 1994-99 |
| Part type | Solenoid Kit |
| Condition | New |
| Brand | OEM |
| Reference | A518 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
A518 is the older Chrysler name for this transmission family. The RE versions with an electronic governor are the ones this kit is built for; units with a hydraulic governor do not use these governor parts.
If the overdrive coil or its harness has failed, yes. Confirm with codes and a coil test first, and check that the transmission control relay is powering the solenoids with the engine running.
They are already in the kit, along with the governor body gasket.
Sonnax splits them at 2000: 1999 and earlier sensors use an oval-style connector, 2000 and later a rectangular plastic one. This kit has the early sensor.
Mopar ATF+4, which replaced the ATF+3 called for in the original manuals. Check it hot with the engine idling in Neutral.
