8L90/10L90 241J Adapter/ Spacer/ Clock Ring
8L90/10L90 241J Adapter/ Spacer/ Clock Ring
8L90 / 10L90 to Jeep 241J Transfer Case Adapter & Clocking Ring Kit
Seamlessly marry your modern GM drivetrain to your Jeep JK, TJ, or LJ with the Wicked Wrench Motorsports 8L90/10L90 to Jeep 241J Adapter Spacer and Clock Ring Kit.
Specifically engineered for Gen V LT engine swap applications, this adapter bridges the gap between a 4x4 automatic GM transmission (8L90, 8L90E, 10L80, or 10L90) and the Jeep Wrangler JK 241J transfer case. At an ultra-slim 3/4-inch overall thickness, it prevents excessive rearward drivetrain stretch — the ultimate solution for tight Jeep engine bays.
The multi-position clocking ring allows you to index your 241J transfer case in 3 distinct locations, letting you optimize front driveshaft angles and customize underbody ground clearance.
What's Included:
- 3/4-inch-thick clocking ring with 3 indexing locations
- All necessary transmission-side installation hardware
- Compatible with factory 241J studs and nuts for a direct bolt-on fit
⚠️ Important: A 32-spline input shaft upgrade is required. Factory Jeep 241J transfer cases use a 21 or 23-spline shaft which will not match GM transmission output. We carry the exact Wicked Wrench Motorsports Machined 32-Spline Input Shaft — add it to your order for a seamless build.
Also recommended: Jeep JK 241J T-Case Beef-Up Bracket for a bulletproof 4WD shift setup.