Parts for your 2006 Nissan Navara-Transmission filter

2006 Nissan Navara Transmission Filter: What’s Fitted and What To Do

Based on factory material, the 2006 Nissan Navara (D40) with the 5‑speed automatic (Jatco RE5R05A) uses an internal transmission oil strainer and pan magnets, while the manual gearboxes do not have a serviceable transmission filter. This is supported by the Nissan Navara D40 Service Manual (Automatic Transmission section for RE5R05A, which details the “Oil Strainer” and pan magnets), Jatco RE5R05A technical literature, and Nissan’s maintenance schedules that list ATF servicing without a routine filter interval. So, a transmission filter is relevant for auto models, but not for manuals.

For auto D40s, the transmission filter’s job is to catch clutch material and fine metal particles so the fluid can keep the hydraulics and valve body happy. Along with the magnets in the pan, the strainer helps keep the fluid flow clean and consistent, which means smoother shifts and longer transmission life—especially important on a hard‑working ute that tows, goes off‑road, or sees lots of stop‑start commuting.

Nissan doesn’t specify a regular replacement interval for the RE5R05A’s strainer, it’s typically replaced during an overhaul or if contamination is found. That said, plenty of workshops in Australia and New Zealand choose to replace the strainer as part of a deeper pan‑off service at higher mileage. A practical approach is:

• ATF service every 60,000–90,000 km in severe use (towing, heat, heavy city work), lighter use can stretch further if fluid stays clean.
• Pan‑off service with strainer, pan gasket, and magnet clean at higher kilometres or when symptoms (shudder, delayed engagement, dirty fluid) show up.

When doing the job, the pan is removed, magnets cleaned, the strainer swapped, and the gasket replaced. Refill with the correct spec ATF (Nissan Matic J or the later Matic S that supersedes it—follow the under‑bonnet label or service manual) and set the level at the specified fluid temperature with the correct fill/level procedure. Over‑ or under‑filling can cause shift issues, so temperature‑based level setting matters.

Signs it’s time to act can include harsh or lazy shifts, a whine on take‑off, dark or burnt‑smelling fluid, or debris in the pan. Addressing those early—before clutch material builds up—saves money and headaches. For manual 2006 Navaras, there’s no transmission filter to replace, routine care is simply draining and refilling the gearbox oil with the specified grade at the recommended intervals.

• Does a manual 2006 Navara have a transmission filter?
• How often should the auto transmission filter be changed on a 2006 Navara?
• What ATF should be used after a filter change on a 2006 Navara auto?

Does a manual 2006 Navara have a transmission filter?
No. Manual D40 gearboxes don’t use a serviceable transmission filter. They rely on correct gear oil and routine drain/fill servicing. If shifting feels notchy or the oil looks contaminated, a fluid change with the specified grade is the fix—not a filter replacement.

How often should the auto transmission filter be changed on a 2006 Navara?
There’s no factory‑set interval for the RE5R05A’s internal strainer. Many local workshops will replace it during a pan‑off service at higher kilometres or when there’s evidence of contamination, shudder, or delayed engagement. Regular ATF services every 60,000–90,000 km in tougher conditions help keep the strainer and valve body cleaner for longer.

What ATF should be used after a filter change on a 2006 Navara auto?
Use the Nissan‑specified fluid: Matic J (factory fill for many early D40s) or the later Matic S, which supersedes J in most cases. Check the service manual or under‑bonnet label for your build and choose an equivalent that explicitly meets that spec. Avoid generic fluids unless they’re approved for Matic J/S.