RE5R05A Pump 2007, used and ready to install. Fits the RE5R05A. Ships fast from the USA.
If your 2007 Nissan Armada, Titan, Pathfinder, Frontier, Xterra or Infiniti QX56 takes a long, lazy pause before it drops into Drive on a cold morning, whines with engine speed, or slips everywhere once the fluid gets hot, the front pump is one of the first parts to suspect. This RE5R05A pump assembly is a used original Nissan unit, pump body and stator together, that came out of a 2007 Armada LE transmission that was still running and driving when it was removed. You are buying a matched, factory-machined pump from the same model year as your truck instead of a mix of loose gears and covers.
The RE5R05A is Jatco's 5-speed rear-drive automatic, and everything it does depends on the pump at the front of the case. The torque converter hub drives the pump gears whenever the engine is turning, and the oil they move becomes line pressure for every clutch and band apply, converter clutch apply and the lube circuit. The stator side of the assembly holds the converter stator and routes fluid in and out of the converter. When the gear pocket or gears wear, the extra clearance leaks pressure back to the inlet, and every apply in the unit gets softer and slower at once.
Put a gauge on the line pressure port and compare cold readings with readings at full operating temperature. Pressure that starts acceptable and sags as the fluid thins is the classic pump wear pattern. Do not stop there: on this transmission a worn pilot valve bore in the valve body also produces low pressure at the tap, and Sonnax documents that pilot valve A feeds the line pressure and converter clutch solenoids while pilot valve B feeds the clutch and brake solenoids. Our RE5R05A service and diagnosis guide walks through the pressure test and the pilot valve check so you only pull the transmission when the pump is really the problem. Also check the fluid for a milky pink look. Roughly half of the RE5R05A cores Sonnax receives have coolant in them from a failed radiator cooler, and a pump that has run on that mixture is usually scored.
This listing is a 2007 RE5R05A pump, and the donor was a 2007 Armada LE. The RE5R05A was used across the 2007 Nissan and Infiniti rear-drive and 4WD lineup, but the transmission saw running changes during its production life, so match the pump to your own unit before you order. Compare the casting, the stator shaft and the bolt pattern against the pump you are removing, or send us your year and VIN and we will check it for you. Every other RE5R05A part we stock is on the RE5R05A transmission page, and if your truck is an earlier model we also carry an RE5R05A pump for 2003-2006.
Because the assembly arrives as a complete pump with its stator, the internal clearances were set at the factory and wore in together in a running transmission, which is a better starting point than mixing gears from one pump with a body from another.
| Fits | RE5R05A 2007 |
| 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 came from a 2007 Armada LE, and the 2007 Titan and QX56 used the same RE5R05A family. Match the casting and stator shaft to your old pump, or send your year and VIN before ordering and we will confirm it.
It is the pump and stator assembly as removed from the transmission, so you do not have to swap the stator over from your old pump.
Run a line pressure test hot and cold. Pressure that drops as the fluid heats points at pump wear, but worn pilot valve bores in the valve body can mimic it, so check those before pulling the transmission.
Nissan specifies Genuine Nissan Matic S ATF, with Matic J listed as the approved alternative. Set the level using the hot check procedure.
A new front seal, a check of the converter hub and pump bushing, and fresh fluid at minimum. If the fluid was burnt or had coolant in it, plan on a rebuild kit and a new radiator cooler too.
