baindoor

For the record its the line on the driver side inlet on the radiator...

It matters-- transmission cooler is supposed to be in series after the existing transmission cooler below the rad. So you need to know which line is flowing out from the tranny and which line flows back to the tranny. I can check by running the engine with the lines disconnected but it someone knows which is which it means its less messy for my garage.... Thanks Jeff

Got a 1999.5 Pathfinder 3.3. I'm installing a transmission cooler. Wondering if anyone knows which transmission fluid line is the outflow from the transmission (passenger side or driver side)? thanks Jeff