RE5R05A Solenoid Kit 2004, remanufactured and ready to install. Fits the RE5R05A. Ships fast from the USA.
A 2004 RE5R05A is one of the early builds of this Jatco five-speed, and by now most of them have well over 150,000 miles of heat cycles on the original solenoids. This remanufactured solenoid kit is for 2004 applications such as the first-year Titan, Armada and QX56. If yours shifts late, flares, bangs into gear or drops into limp mode with solenoid codes stored, replacing the whole set is usually cheaper than chasing failures one coil at a time.
The RE5R05A has no throttle cable or governor. The control module reads speed, throttle and temperature, then switches solenoids on the valve body to apply and release each clutch and brake, set line pressure and lock the torque converter. As the solenoids age, coil resistance drifts and the valve seats wear, so oil leaks past when the solenoid should be closed. The module keeps commanding the shift, but the clutch fills slowly and slips, which wears the friction material and cooks the fluid further.
Early units have quirks later ones do not. Sonnax describes three valve body versions over the production run; the first design has two neutral-to-reverse accumulators and an empty bore under the low coast solenoid. Sonnax also notes that Infiniti valve bodies built until August 2005 used a low resistance low coast solenoid of about 10-15 ohms, while Nissan has always used the 20-40 ohm high resistance type. For a 2004 that difference is the main fitment trap.
Read the codes and freeze-frame data first. Check the fluid level and condition; a 2004 with original fluid may already have clutch debris that will chew up new solenoids. Look for milky fluid as well, because a leaking cooler inside the radiator is a known way these units fail. With the pan off you can measure each solenoid at the harness connector. Our RE5R05A service guide explains the code list, the low coast solenoid resistance check and why worn pilot valve bores can look like a bad solenoid.
This listing is for 2004 RE5R05A transmissions. The set pictured includes three different solenoid body styles, because Bosch, Nachi and Mitsubishi all supplied this unit. Before installing, compare each new solenoid with the one it replaces: connector, mounting tab and nose shape should match. On a 2004 Infiniti, measure the old low coast solenoid; if it reads 10-15 ohms you need that early low-resistance type in its place. For a 2005-or-later truck, the 2005-2021 RE5R05A solenoid kit is the better match, and 2004 Titan owners can also compare the Titan solenoid kit listed by OE number. Everything else for this unit is in the RE5R05A collection. Send us your year and VIN and we will confirm fitment.
If the solenoids test good and the codes point at the module instead, the RE5R05A transmission control module is the next part to check.
| Fits | RE5R05A 2004 |
| Part type | Solenoid Kit |
| 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.
This 2004 kit is remanufactured. If you want a new set for a 2005-or-later truck, see the 2005-2021 RE5R05A solenoid kit.
Early applications include the 2004 Titan, Armada and Infiniti QX56, along with some Infiniti cars. Match the solenoids on your valve body to the kit rather than relying on the model name.
Infiniti valve bodies built until August 2005 used a 10-15 ohm low coast solenoid, while Nissan units use the 20-40 ohm type. Using the wrong resistance causes shift complaints, so measure the original first.
Yes. Install a new filter and pan gasket and refill with Nissan Matic S ATF. Old, burnt fluid is a common reason solenoids fail in the first place.
Check the harness and the transmission control module, and have the valve body bores inspected. Worn pilot valve bores can produce the same codes and shift complaints as a weak solenoid.
