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Description
⚡ Usually ships next business day. During high demand periods, allow 2–4 weeks for production.
The Wicked Wrench Motorsports 241J Modified 32-Spline Input Shaft converts your factory Jeep 241J transfer case to accept a modern GM 6L80, 8L90, or 10L90 automatic transmission — the essential internal upgrade for any Gen V LT engine swap in a 2007–2018 Jeep Wrangler JK, TJ, or LJ.
Factory Jeep 241J transfer cases come with a 21-spline or 23-spline input shaft that cannot handle V8 torque or mate to GM heavy-duty automatics. This CNC-machined 32-spline conversion shaft delivers the exact output-to-input profile required to connect your factory Jeep transfer case directly to a GM 6L80, 6L90, 8L80, 8L90, 10L80, or 10L90 transmission — while retaining your factory low-range crawl gears and OEM 241J housing.
⭐⭐⭐⭐⭐ 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
Compatibility:
- Transfer Case: Jeep 241J (JK, TJ, LJ)
- Transmissions: 6L80, 6L90, 8L80, 8L90, 10L80, 10L90
- Engines: L83, L84, L86, L87, LT1, L8T (Gen V LT), LS3 (Gen IV)
Key Features:
- 32-Spline Conversion: Upgrades factory 21 or 23-spline 241J input to a heavy-duty 32-spline profile that matches GM transmission output shafts
- Direct GM Transmission Matching: Engineered for GM 6-speed (6L80/6L90), 8-speed (8L80/8L90), and 10-speed (10L80/10L90) automatics
- CNC-Machined Alloy Steel: Case-hardened and heat-treated to resist gear fatigue and spline twisting under extreme trail abuse
- Retains Factory 4WD Gear Ratios: Fits inside the OEM 241J housing without modifying low-range crawl gears
- Eliminates the Weak Link: Prevents catastrophic shaft shear under hard acceleration or vertical rock crawling
Why Choose Wicked Wrench?
Save your budget by keeping your factory transfer case — just give it the internal strength it needs to handle V8 power on the trail.
⚠️ Don't forget the rest of your swap parts! This input shaft must be paired with the correct adapter to connect your transmission to the 241J:
- 8L90 / 10L90 to Jeep 241J Adapter, Spacer & Clocking Ring — bolt your transmission up securely with multiple clocking angles
- Jeep JK 241J Gen V Swap T-Case Beef-Up Bracket — eliminate shifter cable flex and binding under heavy trail loads
⚙️ 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: