Replacing the Transmission Filter on 2003 – 2007 Honda Accord 4cyl
Introduction: The Automatic Transmission Fluid (ATF) is filtered of external and wear debris by the transmission filter. Although the owners manual for this model does not list replacement as a maintenance item, replacing this is more of a preventive step. The filter is external i.e. not within the transmission itself.
Tools & Materials: Needle-nose pliers, 10mm spanner, new transmission filter (part number: 25430-PLR-003) and a rag.
Procedure: Locate the ATF filter. You will find this by standing opposite the front left tire and looking down, over the engine fuse box. I recommend removing the engine air box and the loosening the 2 10mm bolts for the fuse box. Then move the box out of the way. This would create more room.
Next, remove the 10mm bolt securing the bracket securing to the filter. Place a rag beneath the filter, and using the needle-nose pliers or equivalent, remove the 3-prong clamps on the inlet and outlet hoses. The rag will collect the slight spill of ATF, nothing to worry about :D.
Before removing the hoses, note the orientation of the filter in relation to the inlet and outlet hoses (the smaller half points to the rear of the car).
Replace the filter and voila! you’re done. Assemble following reverse steps