8L90 / 10L90 to Jeep 241J Adapter, Spacer & Clocking Ring


Stud & Nut Kit Option: No Kit Required (Re-Use Mine)
Price:
Sale price$349.00

Expert Support

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Description

Usually ships next business day. During high demand periods, allow 2–4 weeks for production.

The Wicked Wrench Motorsports 8L90 / 10L90 to Jeep 241J Adapter, Spacer & Clocking Ring Kit seamlessly bridges your modern GM drivetrain to a Jeep JK, TJ, or LJ 241J transfer case. Specifically engineered for Gen V LT engine swap applications, this adapter connects a 4x4 automatic GM transmission (8L90, 8L90E, 10L80, or 10L90) to the Jeep Wrangler 241J transfer case at an ultra-slim 3/4-inch overall thickness — preventing excessive rearward drivetrain stretch in 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 for your specific build.


⭐⭐⭐⭐⭐ What Builders Are Saying

"They promptly shipped my parts. Incredibly knowledgeable and willing to assist. Great people."
David S. ✅ Verified Customer

"Knowledge on all gen 5 and square body conversion. Helped me with the set up I need for my 81 Jimmy."
Midtown Roofing ⭐⭐⭐⭐⭐ Verified Customer

"Was a huge help! I'm building a massive 30+ inch lifted SAS truck. Always answered my questions and had some parts laying around he helped me with. Really great guy and huge help."
DustAllDay ⭐⭐⭐⭐⭐ Verified Customer


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

Compatibility:

  • Vehicles: Jeep Wrangler JK / JKU, TJ, LJ
  • Transmissions: 8L90, 8L90E, 10L80, 10L90 (Gen V LT swap)
  • Transfer Case: Jeep 241J

Key Features:

  • Ultra-Slim 3/4" Profile: Minimizes drivetrain stretch for clean fitment in tight Jeep engine bays
  • 3-Position Clocking Ring: Index your 241J in 3 locations to optimize driveshaft angles and ground clearance
  • Direct Bolt-On: Compatible with factory 241J studs and nuts
  • Gen V LT Swap Specific: Engineered for 8L90 and 10L90 GM automatic transmissions

⚠️ 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.

⚙️ Building a full Jeep JK Gen V LT swap? Check out our complete Jeep JK Gen V LT Swap Kit collection for everything you need in one place.

🔧 Frequently Paired Parts:

🔧 Request a Custom Swap Quote

Not sure what wiring or brackets your specific chassis needs? Drop your Year, Make, Model, and transmission type in the box below. Our team will review your specs and reach out to build the perfect package for your rig.

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