45RFE Pump 1999, used and ready to install. Fits the 45RFE. Ships fast from the USA.
If you are rebuilding a 1999 or later 45RFE out of a Ram 1500, Dakota, Durango, Grand Cherokee or Liberty and the original pump came apart with scored gear pockets, a cracked body or a chewed-up stator, this is a complete used pump to build from. It comes with its matching plate, uses three gears in the body, and is the front-seal style Chrysler used from 1999 until about April 2007. It is sold as a good used core for rebuild purposes: it has not been tested, and its bushings and seals are used and not guaranteed, so plan to freshen them before it goes in.
The 45RFE pump is driven directly by the torque converter hub, so it spins at engine speed any time the engine runs. On this design the hub engages the pump gear through two drive lugs. The gears pull fluid through the pickup filter and send it out as main line pressure, but the pump body is also a valve body of its own: it carries the pressure regulator valve that sets line pressure and the converter clutch valves that route apply and release oil. The transmission computer adjusts line pressure through a variable force solenoid in the solenoid pack and reads the result from a line pressure sensor, so when the pump cannot keep up, the computer notices quickly.
ATSG also documented an early-pump problem worth knowing if you are holding a 1999 to 2006 unit: small screws that hold the spacer plate sit in a main line pressure passage, and if one backs out, line pressure leaks away and the truck barely moves. Check those screws on this core before assembly.
A pump is a full removal job, so rule out the cheap causes first. Check fluid level hot with ATF+4, inspect the pickup filter and its neck seal for an air leak, and compare desired versus actual line pressure on a scan tool as the fluid heats. If the delay happens only on the first start after sitting overnight, read TSB 21-016-05 about converter drainback through the cooler return filter before blaming the pump. Our 45RFE pump failure guide walks through the full order of checks, and the pressure control solenoid guide covers the solenoid side of a P0868.
This pump is listed for 45RFE and 5-45RFE units built from 1999 to roughly April 2007, the front-seal units, and it is also listed to fit the 65RFE and 66RFE. It does not fit the 68RFE. The body castings on this unit are 4799567 and 04799578 BC, and the stator measures 7 5/8 inches long. Compare those castings, the stator length and the two-lug gear drive against the pump you removed. Late 2007 and newer transmissions changed design, so if your unit was built near the changeover, send us your year and VIN before ordering. You can see every other 45RFE part we carry on the 45RFE collection page.
Because this is a rebuild core, treat it like any used pump on the bench. Disassemble it, check gear-to-body clearance and the gear pockets for scoring, and replace the bushing and front seal. If the valve bores show wear, the 45RFE pump valve repair kit replaces the pressure regulator and converter clutch valves with oversized pieces that do not need reaming. A complete 45RFE rebuild kit for 1999-05 supplies the seals, gaskets and frictions for the rest of the unit. Align the pump to the case, inspect the converter hub for wear or grooves, prime the pump with ATF+4 before first start, and flush the cooler so old debris does not come back into a fresh pump. Problems on the rest of the unit are covered in our 45RFE and 545RFE problems guide.
| Fits | 45RFE 1999 |
| Part type | Pump |
| Condition | Used |
| 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.
It is a complete good used pump with its matching plate, sold for rebuild purposes. It has not been tested and the bushings and seals are used, so plan to inspect it and replace the bushing and front seal before installing.
It is listed for front-seal 45RFE and 5-45RFE units from 1999 to about April 2007. Later units changed design, so a 2008 is not a match. Send your year and VIN if you are unsure.
No. It is listed specifically as not fitting 68RFE units. It is listed for the 45RFE, 5-45RFE, 65RFE and 66RFE.
Compare the body castings 4799567 and 04799578 BC, the 7 5/8 inch stator length, the three-gear body and the two-lug converter hub drive against the pump you removed.
The 45RFE uses ATF+4. Lubricate the gears and fill the pump cavity with ATF+4 during assembly, then fill the unit and check the level hot after the first start.
