Rebuild kits, hard parts, solenoids, valve bodies, fluids, and the tools to install them — for GM, Ford, Dodge/RAM, and import transmissions. Find your transmission, add to cart, done.
Master kits, overhaul kits, banner kits, seals and frictions in one box.
Shop kits →Drums, shells, pumps, planetaries, shafts and the internals that fail first.
Shop hard parts →Bushing drivers, compressors, alignment and bench tools built for the job.
Shop tools →Factory-spec ATF and additives matched to your transmission.
Shop fluids →Scanners, pressure gauges and test tools to find the fault fast.
Shop diagnostics →The failure patterns that show up over and over on the 4L60E, and how to tell a solenoid fault from a valve body issue before you drop the pan twice.
Read the guide → How-toWhy the debris left in the cooler kills your fresh rebuild, and the step-by-step flush that keeps it from coming back.
Read the guide → DodgeWhere the 68RFE gives up first behind the Cummins, plus the upgrades worth doing while you have it apart.
Read the guide → MoreFluid types, jack picks, torque specs, and model-by-model failure notes. Browse the full library of shop-floor guides.
Open the blog →Cited, print-ready transmission guides and spec charts — ATF fluid specs, valve-body rebuild steps, and diagnostic flowcharts. Instant download, built for the bench.