The Advance Adapters 1.5" TH350/700R Adapter (SKU AS-6800) mates a GM TH350 automatic transmission to a Jeep New Process-pattern Atlas transfer case. It's built specifically for the 4WD TH350 with a 7/8" output shaft stickout — worth confirming that measurement on your transmission before ordering.
Important companion-part note: if this adapter is going on a 4x4 700R4 instead of a TH350, Advance Adapters calls out that you'll also need the AS-0404 spacer (the 1" 4L60-to-D300 spacer you already have listed) to complete the fitment. Missing that companion part would mean an incomplete swap for the 700R4 application specifically — worth flagging clearly on the listing so a 700R4 customer doesn't order this alone.
What's included:
- Adapter, TH350 to Jeep New Process (51-6800)
- GM Auto Transmission O-Ring (716511)
- Bolt, 3/8-16 x 1.25" SHCS Zinc (723730)
- SHCS, 3/8-16 x 1-3/4" (723729)
- Bolt, 10mm-1.5 x 40mm SHCS Black Oxide (720046)
This is a lean adapter kit — gasket-equivalent O-ring, adapter, and mounting hardware — built for a specific TH350 fitment (7/8" stickout) with a clearly documented companion-part requirement for anyone running the 700R4 instead.