Finned Aluminum Transmission Oil Pan for GM 700R4 / 4L60 / 4L60E with Drain Plug, Gasket, and Bolts

The stock stamped-steel transmission pan does exactly one job: hold the fluid. It does nothing to cool it, it has no drain plug, and every fluid change means breaking the whole pan loose and wearing whatever spills out. This finned aluminum pan fixes all three. The cast fins pull heat out of the fluid the way a heat sink does, so on a tow rig or a truck that works hard the transmission runs cooler where it counts, and aluminum sheds that heat far better than the steel pan it replaces.

It fits the GM 700R4, 4L60 and 4L60E in the shallow 2-5/8 inch depth, replacing part number SP8594BK, and it ships with a gasket, bolts, and a drain plug so you can pull the old fluid clean and catch the fine metal a worn transmission sheds. The drain plug alone turns a fluid service from a two-quart spill into a clean twenty-minute job. The finish is a corrosion-resistant plated aluminum that stands up to road salt and moisture a lot better than bare stamped steel.

Two honest notes from the bench: confirm which 4L60E you have before you order, because the early shallow pan and the later deep pan are not interchangeable in service depth, and plan to run a quality gasket and verify the supplied bolts are long enough for your case. A steel-core or cork gasket seals more reliably than thin rubber. Do those two things and it bolts up leak-free and looks a great deal better than the rusty pan it replaced. Ships from the USA.