The Advance Adapters 4L60E Hex Pattern to Atlas Adapter (SKU AS-9300) is built for GM's newer electronically-controlled 4L60E, introduced in 1996. This version of the transmission runs 21-1/2" long, has a removable bellhousing, and uses a hex bolt pattern on the output side — similar in layout to a TH400, but not interchangeable with the earlier mechanical 4L60/700R4 adapters.
Because of that hex pattern, mating this transmission to an Atlas takes two adapters working together rather than one: the first adapter picks up the VSS (vehicle speed sensor) tone off the GM transmission, and the second couples that assembly to the Atlas transfer case. This kit is specced for the 4WD version of the 4L60E — worth confirming before ordering, since Advance Adapters calls out that application specifically.
What's included:
- Speedometer Sensor (300619)
- Adapter, 4L60E/700R4 Universal (51-0405)
- Adapter, 700R4 to Atlas 2.5 (51-9111)
- Reluctor, 4L60 Integral Clamp (716074)
- Plug, 22mm Reluctor Sensor Plug (716079)
- GM Auto Transmission O-Ring (716511)
- Seal, National (716757)
- Nut, 10mm x 1.50 Zinc (720011)
- Stud Bolt, 10mm x 1.5, 50mm Long (720061)
This two-adapter approach is specific to the 4L60E's hex-pattern output — if you're not sure whether your 4L60E is the hex-pattern '96-and-later version or an earlier mechanical unit, that's worth verifying against the transmission itself before ordering, since the two use different Advance Adapters kits entirely.