Parts for your 2006 Honda Odyssey-Transmission filter

2006 Honda Odyssey transmission filter — what it does and when to replace it

Based on Honda’s own technical material, the 2006 Honda Odyssey does use a transmission filter. The factory Service Manual for the 2005–2010 Odyssey and Honda’s Electronic Parts Catalogue list an external ATF filter assembly fitted in the transmission cooler return line (commonly referenced as Honda part number 25430‑PLR‑003), alongside a non‑serviceable internal pickup screen inside the gearbox. So, a transmission filter is absolutely relevant on this model.

On this Odyssey’s 5‑speed auto, the transmission filter’s job is to catch fine clutch material and other microscopic rubbish that circulates with the fluid. By keeping that grit out of the valve body and solenoids, it helps the box shift smoothly, protects bearings and clutches, and extends the life of the transmission. Think of it as the gearbox’s first line of defence, working hand‑in‑hand with the correct Honda ATF.

For servicing in Australia and New Zealand, they’ll want to stick with Honda ATF‑DW1 (supersedes the older Z1 fluid) and treat the filter as a periodic maintenance item. A sensible schedule is an ATF drain‑and‑fill every 40,000–60,000 km for mixed or “severe” use (towing, hot climates, lots of stop‑start), and every 60,000–80,000 km for gentler highway use. The external ATF filter can usually be replaced about every 120,000–160,000 km, or sooner if the fluid comes out dark, smells burnt, or shifting quality has dropped off.

Replacement is straightforward for a workshop: depressurise and cap the cooler lines, swap the filter observing the flow‑direction arrow, and fit new crush washers on the banjo fittings. A couple of drain‑and‑fills (with a short drive between) is a tidy way to refresh most of the fluid without a power flush. Honda generally prefers this method over machine flushing, as it’s gentler on ageing seals and valve bodies.

• Use genuine‑spec ATF‑DW1 and a quality filter to maintain shift quality.
• Look for tell‑tales: delayed engagement, shudder, flare on upshifts, or metallic glitter in the drained fluid.
• If towing a caravan or loading the Odyssey up with family and gear often, bring the intervals forward a bit.

With the right fluid and a fresh filter at sensible intervals, this Odyssey’s auto can stay happy for the long haul.

Popular questions about the 2006 Honda Odyssey transmission filter

Does a 2006 Honda Odyssey actually have a serviceable transmission filter?

Yes. Honda’s Service Manual and parts listings show an external ATF filter on the cooler return line, plus an internal, non‑serviceable screen. The external one is the item replaced during maintenance.

How often should the transmission filter be replaced?

For most Aussie and Kiwi driving, replacing the external filter around 120,000–160,000 km is a safe bet. If the vehicle tows, sees steep hills, or lots of city traffic, consider doing it earlier and pair it with drain‑and‑fills every 40,000–60,000 km using Honda ATF‑DW1.

Is a transmission flush recommended on this model?

A full power flush isn’t usually recommended. Honda tech guidance leans toward one or more drain‑and‑fills, which renews most of the fluid without stressing seals or pushing debris into sensitive passages. Replace the filter and repeat a short drive and second drain‑and‑fill if the fluid was very dirty.