Upgrade your Full Size Jeep drivetrain with this compact TH700R4 to Model 300 transfer case adapter, engineered specifically for 1963–1991 Full Size Jeep models. Designed for a seamless fit, this adapter measures just 3.1" long, keeping your overall transmission and adapter length at an efficient 26.5". Precision-machined from billet 6061 T6 aluminum, it delivers superior strength with thick flanges and a heavy-duty cross-section, ensuring lasting durability under demanding conditions.

The adapter features multiple transfer case clocking positions, from near-factory (20° down) to near-flat (3° down), letting you tailor the installation to your Full Size Jeep’s build. Please note, pan clearance and axle width may affect flatter positions. The modular mounting base is ready for a urethane isolator mount, offering versatile support options.

Each kit includes everything needed for installation: billet adapter housing, transfer case input, triple-alloy 27 spline Dana 300 input shaft, seals, gaskets, mounting base, and complete hardware. The 4WD TH700R4 transmission bolts directly to this kit—no transmission disassembly required—while a simple input shaft swap in the transfer case (bench job, typically 1–2 hours) gets you rolling. Upgrading to this input shaft brings superior strength and precise tolerances, maximizing your transfer case reliability for both stock and lifted Full Size Jeeps.

Fits all Full Size Jeeps with 700R4 transmission

Kit contents:

• Adapter housing
• Transfer case input shaft, 27 spline
• Seal
• Gasket
• Seal ring
• Steel foot mounting base
• Fastening hardware
• Instructions

Additional Specs:

• Adapter length: 3.1"
• Combined transmission/adapter length: 26.5"
• Material: Billet 6061 T6 aluminum
• Multiple clocking positions: 20° down to 3° down
• Includes triple-alloy 27 spline Dana 300 input shaft