48RE Governor Pressure Solenoid 1994-99, new and ready to install. Fits the 48RE. Ships fast from the USA.
This kit is aimed at the second-generation Dodge Ram owner with a 46RE behind a gas V8 or a 47RE behind the 5.9L Cummins or 8.0L V10 whose truck has started shifting at the wrong time: holding first too long, starting off in second, banging into third, or refusing to kick down when you need to pass. The listing is labeled 1994-1999 and carries the A518 name, the older Chrysler designation for the 46RE. It is a full solenoid service and upgrade kit, not just one solenoid. The photo shows the governor pressure solenoid and governor pressure sensor, an output speed sensor, the overdrive and lock-up solenoid assembly on its harness, a filter, a pan gasket, a governor gasket, a heavier 3-4 accumulator spring, an upgraded lock-up valve spring and a stronger boost valve spring retainer.
Upshift timing in these four-speeds is still decided hydraulically: governor oil pushes the 1-2 and 2-3 shift valves against throttle pressure, and whichever wins sets the shift. What changed in the mid-1990s is where the governor oil comes from. Instead of a spinning governor on the output shaft, the PCM now duty-cycles a solenoid that bleeds line pressure down to the governor pressure it wants for the current road speed. The governor pressure sensor reads the result so the computer can correct itself, and the output speed sensor supplies the road speed signal the whole calculation is built on. On a Cummins truck that tows, the transmission spends a lot of time hot, and a solenoid with a varnished screen or a sensor that has drifted shows up as erratic shift points long before anything breaks.
Before blaming the solenoids, remember that the RE valve body wears at the governor plug bores, and that leak creates the same shuttling and early or late shifts. The 47RE in particular also eats overdrive and direct clutches under heavy towing, which no solenoid kit can fix.
Start with a code scan and a hot fluid check in Neutral. Burnt-smelling fluid or friction material in the pan means the unit needs a rebuild first. With clean fluid, gauge the governor pressure port: it should be close to zero at a stop and climb in step with speed. A reading that stays high at idle, stays low on the road, or jumps around means the governor solenoid, sensor or wiring is at fault, while a bad speed signal shows up as a speedometer or speed sensor problem as well. Our speed sensor guide covers output sensor testing, and the overdrive and TCC solenoid guide covers the other assembly in the box.
The listing names 1994-1999 and the 46RE, 47RE and 48RE family with the A518 reference. Be aware that 1994 and most 1995 Ram trucks used the 46RH and 47RH with a mechanical governor and no governor solenoid; the electronic governor arrived in 1995 production, so the realistic fit here is a 1996-1999 Ram 1500, 2500 or 3500 with a 46RE or 47RE. The governor sensor style, solenoid screen and connector shapes changed over these years, so lay the new parts beside your old ones before installing, or send us your year, engine and VIN and we will confirm the match. Trucks from 2000 on should start with the 2000-up governor solenoid. The full range of parts for these units is on the 48RE collection page.
If the pan shows wear material, price a 1998 RE overhaul kit now, and if the case connector or internal wiring is brittle, an internal wiring harness is cheap insurance while the pan is off.
| Fits | 48RE 1994-99 |
| Part type | Governor Pressure Solenoid |
| 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 earlier Chrysler name for the 46RE four-speed. The kit is listed for the A518, 46RE, 47RE and the later 48RE family, all of which share the electronic governor layout.
A 1999 Ram 2500 with the 5.9L Cummins uses the 47RE with the electronic governor, which is the kind of truck this kit targets. Compare the sensor and connector shapes with your old parts, or send us your VIN before ordering.
Usually not. Most 1994-1995 Rams use the 46RH or 47RH with a mechanical governor and no governor solenoid. Look for a governor body with two electrical connectors under the valve body; if it is not there, this kit does not apply.
Yes. They work as a closed loop, and a drifted sensor makes a new solenoid look bad. This kit includes both plus the output speed sensor.
These trucks do not need a special scan-tool relearn for the governor parts. Clear the codes and drive through normal shifts so the PCM adapts, then recheck the fluid level hot.
