The auxiliary air cooler goes in the return line to the transmission.
Which line is the return line?
| MANUFACTURER | TRANSMISSION MODELS | TRANS RETURN
LINE INLET
ON THE TRANSMISSION |
| General Motors | TH125 / TH125C / 3T40 | Top |
| General Motors | TH180 | Rear |
| General Motors | TH200 / TH200-4R | Bottom |
| General Motors | TH325 / TH325-4L | Top |
| General Motors | TH350 / TH350C | Top |
| General Motors | TH400 / 3L80 / 3L80H | Top |
| General Motors | 440-T4 / 4T60 / 4T60E | Horizontal Fitting |
| General Motors | 700-R4 / 4L60 / 4L60E | Top |
| General Motors | ST300 | Top |
| General Motors | 4T80E | Main case |
| General Motors | 4L80E | Lower front |
| General Motors | TH425 | Outer, farthest from Torq. Conv. |
| General Motors | MX17 | Bottom |
| General Motors | A130L | Bottom |
| General Motors | F3A | Bottom |
| General Motors | Aluminum Powerglide | Top |
| Ford | A4LD | Top |
| Ford | AXOD | Top |
| Ford | AOD / FIOD | Bottom |
| Ford | ATX | Nearest Pump |
| Ford | C3 / C4 / C5 / C6 / E40D | Rear |
| Ford | AOD-E / 4R70W | Top |
| Ford | AXOD-E / A4XN / A4XS | Bottom |
| Ford | CD4E | Nearest Pump |
| Ford | F4EAT | Nearest Pump |
| Ford | FMX (cast iron) | Rear |
| Chrysler | TF904 / TF727 | Rear |
| Chrysler | A500 / 518 / 618 | Rear |
| Chrysler | A404 / 413 / 470 / 670 | Top |
| Chrysler | A604 / 41TE | Front |
| Chrysler | 42LE | Top |