45RFE Pump 2007, remanufactured and ready to install. Fits the 45RFE. Ships fast from the USA.
A 2007 four-speed 45RFE that sits in neutral for a second or two after you select Drive, needs throttle before it creeps, or has P0868 and P0944 stored after a long hot drive is telling you line pressure is coming up short. When the filters, fluid and sensor check out, the transmission oil pump is usually what is left. This remanufactured 45RFE pump for 2007 replaces the whole assembly, body, gears and pump-mounted valves, in one piece.
Every hydraulic job in the 45RFE starts at the pump. The converter hub spins the pump gears at engine speed, the gears draw oil through the primary filter, and the pressure regulator valve in the pump body trims that flow into main line pressure. From there it goes to the clutch circuits through the valve body and solenoid pack, to the converter, to the cooler and to the lube circuit. The converter clutch regulator and switch valves are also in the pump, which is why Sonnax lists TCC slip and TCC codes as pump-wear symptoms on this design, not just low pressure.
Because the 45RFE and the five-speed 545RFE share this pump family, the same wear pattern shows up on both: worn pump gears and a worn pressure regulator bore leak volume, and the controller ends up asking for more pressure than the pump can make.
Start with the cheap items, because several of them set the same codes. Chrysler's 2007 procedure has you check the pan for heavy debris and inspect the primary filter: a plugged filter, a damaged seal, or a filter whose seal ended up on the filter neck instead of in the pump bore will starve the pump just like wear does. It also lists a loose cooler return filter and wrong fluid level. With those ruled out, compare desired and actual line pressure on a scan tool from cold to fully hot. A pump that holds pressure cold and falls behind hot is the classic wear pattern. The 45RFE pump failure guide covers the test order, and if your codes are P0934 or P0935 instead, read the pressure control solenoid and sensor guide first.
This pump is listed for the 2007 45RFE. RFE pumps changed castings and lube passages during production and some replacements come with a front seal while others do not, so compare your original pump with the photos, or give us your year and VIN and we will check it before it ships. The five-speed equivalent is the 545RFE pump 2007, and the previous year is the 45RFE pump 2006. Everything else for this unit is on the 45RFE parts page.
| Fits | 45RFE 2007 |
| Part type | Pump |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
They belong to the same pump family, and Sonnax lists one remanufactured pump for both. Castings and seal configuration changed over the years, so match your old pump to the listing photos or send us your year and VIN to confirm.
Yes. Chrysler lists a cracked, plugged or misinstalled primary filter or seal, and a loose cooler return filter, among the causes of P0944. A filter seal left on the filter neck instead of inside the pump bore lets the pump suck air. Check those first.
P0868 line pressure low and P0944 loss of pump prime are the common ones, often with slipping and delayed engagement. P0934 and P0935 are pressure sensor circuit codes, which point to wiring or the sensor rather than the pump.
ATF+4 only. Chrysler lists 5.2 L for a 4x2 service fill, 6.2 L for 4x4, and about 14 to 16 L after an overhaul. Set the final level with the fluid at operating temperature.
Yes. The pump is at the front of the case behind the torque converter. Plan to replace the front seal and filters and flush the cooler while the unit is out.
