Parts for your 2004 Nissan Serena-Transmission filter

2004 Nissan Serena transmission filter — what’s fitted and how to look after it

Based on Nissan’s technical literature for the C24 Serena (2004 model year) and Jatco transmission documentation, a transmission filter is relevant on this vehicle. The C24 was offered with either a 4‑speed automatic (Jatco RE4F04B family) or Nissan’s Hyper CVT (Jatco RE0F06A/related), and both systems incorporate filtration. The 4‑speed auto uses a pan-mounted oil strainer and magnets, while the Hyper CVT uses an external cooler‑return cartridge filter and an internal suction screen. Nissan’s factory service manuals and parts catalogues (EPC/FAST) show these filters and screens as service components, confirming their use on the 2004 Serena.

On a 2004 Nissan Serena, the transmission filter’s job is simple but crucial: keep metal fines, clutch material and general debris out of the valve body (4AT) or pump and pulleys (CVT). Clean fluid and a healthy filter help the Serena shift smoothly, protect bearings and clutches, and cut down on heat and wear — a big deal for family vans that see lots of stop‑start driving.

Servicing depends on which gearbox it’s running:

• 4‑speed auto (RE4F04B): When the pan comes off for an ATF service, replace the strainer, fit a new pan gasket, clean the magnets and torque the bolts correctly. Many workshops in AU/NZ pair this with fluid changes every 40,000–60,000 km if the van tows or works hard, otherwise at broader intervals as condition dictates.
• Hyper CVT: Use only the specified Nissan CVT fluid (typically NS‑2 for this vintage). Replace the external cooler‑return filter whenever the CVT fluid is renewed (commonly 60,000 km in local conditions). The internal suction screen is only addressed during overhaul or if there’s confirmed contamination.

Signs it’s time for attention include delayed engagement, flare or harsh shifts (4AT), whining or droning (CVT), shudder, or fluid that smells burnt or looks glittery. Always check for the correct fluid spec on the under‑bonnet label or workshop data, avoid mixing types, and keep the level spot‑on — overfilling or underfilling can quickly undo your good work.

Bottom line: whether it’s the auto or the CVT, the Serena does use transmission filtration, and staying on top of it is cheap insurance against expensive gearbox headaches.

Popular questions

Does the 2004 Nissan Serena actually have a transmission filter?
Yes. The 4‑speed auto uses a pan strainer and magnets, while the Hyper CVT uses an external cooler‑line filter plus an internal screen. Nissan’s C24 factory service info and parts catalogues list these components for the 2004 model year.

How often should the transmission filter be replaced?
For the 4‑speed auto, replace the strainer whenever the pan is removed for service, commonly around 80,000–100,000 km or sooner in tougher conditions. For the CVT, replace the external cooler‑return filter whenever the CVT fluid is changed (many AU/NZ workshops target about 60,000 km). The internal CVT screen is generally only serviced during overhaul.

What transmission fluid does a 2004 Serena use?
It depends on the gearbox. The 4‑speed auto typically uses Nissan Matic‑spec ATF (as per the under‑bonnet label/workshop data), while the Hyper CVT uses Nissan NS‑2 CVT fluid. Stick strictly to the specified fluid — using the wrong type can cause shift or driveability issues and shorten the unit’s life.