Parts for your 2013 Nissan Navara-Transmission filter

2013 Nissan Navara transmission filter: what it is and when to service it

For the 2013 Nissan Navara (D40), a transmission filter is relevant on automatic models and not used on manual models. Technical references including the Nissan Navara D40 Service Manual (Automatic Transmission RE5R05A section) and Nissan’s parts catalogue confirm the 5‑speed automatic uses an internal, serviceable oil strainer/filter (commonly listed under the 31728 part family) located behind the transmission pan. The factory maintenance schedule focuses on fluid condition rather than a fixed filter interval, but the strainer can be replaced when the pan is removed. Manual gearboxes do not have a transmission filter.

On the auto Navara, the transmission filter’s job is simple but crucial: it screens clutch material and fine metal wear from the ATF before it reaches the pump, valve body and solenoids. In the RE5R05A, it’s a robust, metal‑mesh strainer that works alongside the pan magnet to keep the fluid clean and the hydraulics happy. Clean fluid means smoother shifts, better torque converter lock‑up and longer life for pricey internals.

While Nissan doesn’t mandate routine filter replacement by kilometres alone, it’s smart to service it when the pan’s off for fluid work—particularly if the ute tows, sees off‑road use, or runs hot. Many workshops in Aus/NZ will recommend a pan drop, magnet clean and strainer replacement around 80,000–100,000 km, or sooner for heavy‑duty use. Use the correct ATF specified for the D40 auto (Nissan Matic J/S as applicable), and follow the factory fill‑level procedure at the specified temperature. Avoid “universal” fluids unless they state compliance with Nissan’s spec.

When the pan is down, replace the strainer O‑ring and the pan gasket, clean the magnet thoroughly, and torque the pan bolts evenly. If there’s a lot of glitter or clutch sludge in the pan or on the strainer, that’s a red flag—check cooler flow, consider a line flush (not a high‑pressure flush), and scan for shift/pressure codes. After service, many shops will perform an adaptive reset/relearn so the auto can fine‑tune shift behaviour to the fresh fluid.

• Signs it’s due: harsh or lazy shifts, shudder, delayed engagement, burnt‑smelling or dark ATF, or debris in the pan.
• Manual 2013 Navara: no transmission filter fitted—just change the manual trans oil per schedule and usage.

Look after the filter and fluid, and the RE5R05A will generally reward with reliable, predictable shifts for a long time.

Popular questions

Does a 2013 Nissan Navara have a transmission filter?
Yes on automatics, no on manuals. The 2013 D40 with the 5‑speed auto (RE5R05A) uses an internal oil strainer behind the transmission pan, as shown in the Nissan D40 Service Manual (AT section) and Nissan’s parts listings for the strainer assembly. Manual gearboxes don’t use a transmission filter.

How often should the Navara’s transmission filter be replaced?
Nissan’s schedule focuses on ATF condition rather than a fixed filter interval. Many technicians replace the strainer whenever the pan is removed—often around 80,000–100,000 km as a preventive step, or earlier if the vehicle tows, works hard, or shows shifting issues. Always replace the O‑ring and pan gasket, and use the correct ATF.

Can the auto filter be cleaned instead of replaced?
The RE5R05A strainer is a metal‑mesh design and can be cleaned if it’s undamaged and not clogged. Given the low cost of new parts versus the labour of dropping the pan, most workshops prefer to replace it. If there’s heavy debris on the strainer, investigate the root cause before buttoning it back up.