46RE Pump 1996, used and ready to install. Fits the 46RE. Ships fast from the USA.
This is a used factory front pump, casting number 4505031, removed from a 1996 Dodge Ram 2500 quad cab with the Cummins diesel and automatic transmission. That truck carried the heavy-duty 47RE, but the pump body is the shared A518/A618 design listed for the 46RH, 46RE and 47RE. It suits a buyer who is rebuilding a 1994-up Ram, Dakota, Durango or Grand Cherokee unit, found a cracked or scored pump body on teardown, and wants a genuine Chrysler casting instead of an aftermarket housing. It is photographed apart, showing the pump body, the reaction shaft support, the inner and outer gears and the attaching bolts, so you can see the machined faces before you buy.
The pump sits at the front of the case, its gears driven by the torque converter hub at engine speed. Its output is the only source of oil for the whole unit: the regulator valve builds line pressure from it, and what is left over charges the converter, flows through the cooler and lubricates the gear train. The reaction shaft support bolts to the pump body and doubles as the cover for the gears and the hub the front clutch rides on. Because RH and RE units apply the converter clutch with line pressure, a pump that leaks internally shows up at the converter first. Transmission Digest has documented 46RE units setting P1740 or P0740 because the pump body and stator support mating surface was not flat, which bled off line and converter apply pressure.
A restricted cooler causes many of the same complaints, and Sonnax ranks cooler restriction as the most common cause of 46/47RE converter slip and delayed engagement. Check cooler flow first: the factory procedure is to pull the return line, run the engine at idle in Neutral, and collect fluid. One quart should arrive in 20 seconds or less. Good flow out of the transmission but poor flow back points at the cooler; poor flow at the case points at the pump or line pressure, and a pressure gauge test is the next step. Our 46RE pump failure guide walks through both tests and the readings to expect.
The listing is for the 46RE as it was in 1996, with casting 4505031, and the donor was a 1996 Ram 2500 diesel. Chrysler used several pump and reaction shaft support versions across the A518/A618 run, including early non-lockup supports and different stator bushing sizes, so compare the casting number and the support on your old pump with the photos before you order. If you are unsure, send us your year, engine and VIN and we will check it. Every 46RE part we carry is listed on our 46RE parts page.
Treat a used pump as a core to inspect, not a finished assembly. Clean it, then check the clearances the 1998 Chrysler service manual lists for the 46/47RE: gear face to reaction shaft housing 0.0004 to 0.0025 in. measured with Plastigage, inner-to-outer gear tip clearance 0.0035 to 0.0075 in., and outer gear to pump body 0.0035 to 0.0075 in. with a feeler gauge. Replace the pump if seal ring grooves or machined faces are worn or scored. Fit a new front seal, a new pump-to-case O-ring and gasket, and a new bushing if the original is worn. Center the pump with alignment studs and torque the bolts in a diagonal pattern, then confirm the converter hub turns the gears freely before it goes in the truck. A 46RE/47RE master rebuild kit covers the seals and gaskets, and on 1996-97 trucks it is worth checking the governor pressure solenoid while the pan is off. Refill with ATF+4; Chrysler lists a 46RE pan service at 8 pints and a full overhaul fill at 19 to 20 pints, then top off to the dipstick hot.
| Fits | 46RE 1996 |
| Part type | Pump |
| Condition | Used |
| Brand | OEM |
| Reference | 4505031 |
| 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 a used original Chrysler pump, casting 4505031, removed from a 1996 Ram 2500 with the Cummins diesel. It is pictured disassembled with its gears, reaction shaft support and bolts. Plan to clean it, measure the gear clearances and fit a new seal, O-ring and gasket before installing.
The 4505031 casting is listed for the A518/A618 family, which includes the 46RH, 46RE and 47RE. Pump and stator support versions did change over the years, so match the casting number and the support on your old pump, or send us your year, engine and VIN to check.
Do a cooler flow check: disconnect the return line, idle in Neutral and collect fluid. Chrysler expects one quart in 20 seconds or less. If flow at the case is good but poor through the cooler, the cooler is restricted. If flow at the case is poor, test line pressure next.
Install a new front pump seal, the pump-to-case O-ring and gasket, and a new pump bushing if the old one is worn. Inspect the converter hub for scoring, and flush or replace the cooler if the old pump left debris in the fluid.
ATF+4. A pan service on the 46RE is about 8 pints; a rebuilt unit takes about 19 to 20 pints dry depending on the cooler and lines. Check the level hot on the dipstick before driving.
