46RE Pump, remanufactured and ready to install. Fits the 46RE. Ships fast from the USA.
This is a remanufactured front pump assembly for the Chrysler A518 and A618 family: the 46RH, 46RE, 47RH and 47RE. It is built on casting number 4505031 and comes assembled with new pump gears, a new front pump seal, a new front pump bushing, a new pump-to-case gasket and a new pump-to-case O-ring. It is listed for Dodge Ram trucks with the 5.2L gas V8 (1994-2002), the 5.9L gas V8 (1994-2003) and the 5.9L Cummins diesel (1994-2002). If your truck whines with engine speed, hangs in Neutral before it engages, or keeps unlocking the converter on the highway once it is warm, a worn pump is one of the first things to rule in or out.
The 46RE pump is a gear-type pump bolted to the front of the case and turned by the torque converter hub, so it spins at engine speed. Everything hydraulic in the transmission depends on its output. The pressure regulator sets line pressure first, then whatever volume is left over feeds converter charge, the cooler and the gear-train lube. Sonnax notes that on the RH/RE units the converter clutch is applied with line pressure, so a pump that sags under load also lets the converter clutch slip. Worn gear clearances leak the most when the fluid is hot and the engine is at idle, which is why pump problems usually appear warm and at low RPM first.
A restricted cooler causes most of the same symptoms; Sonnax ranks cooler restriction as by far the most common cause, ahead of the converter, the valve body and only then the pump. Test first. Check the level hot with ATF+4, put a gauge on line pressure and see whether it reaches maximum at fast idle, then measure cooler return flow with and without the cooler bypassed. Our 46RE pump failure symptoms guide lays out each test and what the readings mean, and the 46RE common problems and fixes guide covers the other causes of a slow-to-engage truck.
Listed for the A518, A618, 46RH, 47RH, 46RE and 47RE with casting 4505031: 1994-2002 5.2L gas, 1994-2003 5.9L gas and 1994-2002 5.9L Cummins trucks. Pumps and stator supports changed over the years, so compare the casting number and the stator shaft on your old pump with this one before you install, and send us your year and VIN if you are not sure. Later 48RE trucks and other versions are on our 46RE collection page.
| Fits | 46RE |
| Part type | Pump |
| Condition | Remanufactured |
| 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.
It is listed for the 47RH and 47RE behind the 1994-2002 5.9L Cummins as well as the 46RH/46RE gas trucks. Compare the casting number (4505031) and stator shaft on your old pump before installing, or send us your year and VIN.
It comes assembled with new pump gears, a new front pump seal, a new front pump bushing, a new pump-to-case gasket and a new pump-to-case O-ring.
Measure cooler return flow at idle, then bypass the cooler and measure again. If flow comes back with the cooler bypassed, the cooler or lines are restricted. If flow and line pressure stay low with the cooler bypassed, the pump or converter is the problem.
Yes. The pump bolts to the front of the case behind the torque converter, so the transmission has to come out.
Mopar ATF+4. Fill to the service amount and set the final level with the fluid hot and the selector in Neutral.
Flush or replace the cooler and lines, inspect or service the torque converter, and check the crank pilot and overdrive support seal. If the pump failed from debris, the rest of the unit needs inspection too.
