Clayton Off Road Transfer Case Skid Plate Kit | 1/4" Steel | Complete Kit (Plate + Hardware) | Clayton Long Arm + Redesigned Rails Required | Drilling + Reweld Required | 1999–2004 Jeep Grand Cherokee WJ | SKU: COR-4106110
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
⚠️ NOT FOR STOCK WJ: Clayton long arm suspension with redesigned unibody rails (COR-2206210) and 3-piece long arm crossmember (COR-2106110) required.
⚠️ DRILLING + REWELD REQUIRED: Rails must be drilled and rewelded at 39.25" spacing using the skid plate as an alignment jig.
⚠️ SHIPS BARE METAL: Surface rust and cosmetic scratches during shipping are normal and not eligible for return, replacement, or compensation.
Verified Fitment
| Year Range | Make | Model | Trim | Drive |
|---|---|---|---|---|
| 1999–2004 | Jeep | Grand Cherokee WJ | Laredo | 4WD |
| 1999–2004 | Jeep | Grand Cherokee WJ | Limited | 4WD |
| 2002–2004 | Jeep | Grand Cherokee WJ | Overland | 4WD |
| 2002 | Jeep | Grand Cherokee WJ | Sport | 4WD |
| 2004 | Jeep | Grand Cherokee WJ | Special Edition | 4WD |
Does NOT fit:
- 2005–2010 Jeep Grand Cherokee WK — completely different platform
- Any WJ on a stock suspension setup — Clayton long arm system is required
- WJ with old-style crossmember or 2" tall unibody rails — geometry incompatible; upgrade to COR-2206210 first
- Any WJ with a non-Clayton long arm crossmember configuration
- Some WJ builds with aftermarket exhaust systems — verify routing before ordering
Component Specifications
| Specification | Detail |
|---|---|
| Part Number | COR-4106110 |
| Kit Contents | COR-4106112 skid plate + COR-4106111 hardware kit (complete assembly) |
| Material | 1/4" steel plate |
| Finish | Ships bare metal — apply primer and preferred coating before installation |
| Required Unibody Rails | COR-2206210 — redesigned unibody rails (sold separately if not already installed) |
| Required Crossmember | COR-2106110 — 3-piece long arm crossmember (sold separately if not already installed) |
| Rail Spacing Requirement | Exactly 39.25" apart — drilling required; use skid plate as alignment jig before reweld |
| Compatible Suspension | Clayton Off Road long arm systems only — not for stock setup |
| Country of Origin | USA |
| Warranty | 90 days against defects in workmanship |
| Price | $299.00 |
Complete hardware contents:
| Component | Quantity | Specification | Finish |
|---|---|---|---|
| Flat Socket Cap Screw | 4 | 3/8"-16 x 3" — ASTM F835 Alloy Steel | Zinc |
| Hex Cap Screw | 6 | 3/8"-16 x 3" — SAE J429 Grade 8 | Yellow Zinc |
| SAE Thru-Hardened Flat Washer | 16 | 3/8" SAE | Yellow Zinc |
| Nylon Insert Lock Nut | 10 | 3/8"-16 — NE Grade 8 | Yellow Zinc |
Plate-only and hardware-only options: If you need the plate without hardware, order COR-4106112 ($284.00). If you need replacement hardware only, order COR-4106111 ($15.00). The COR-4106110 is the complete kit for new installations.
What Is and Is NOT Included
| Included | NOT Included |
|---|---|
| COR-4106112 transfer case skid plate — 1/4" bare metal steel | Redesigned unibody rails (COR-2206210 — required; sold separately) |
| COR-4106111 complete hardware kit — Grade 8 fasteners, washers, lock nuts | 3-piece long arm crossmember (COR-2106110 — required; sold separately) |
| Primer, paint, or coating for bare metal surface treatment | |
| Welding equipment and drill for required fabrication steps |
No additional hardware purchase needed for a new installation. Everything required to mount the skid plate to the WJ is in this kit. The only remaining requirements are the prerequisite COR-2206210 rails and COR-2106110 crossmember, and the fabrication tools (drill and welder) for the rail work.
Critical Compatibility
Identical compatibility requirements to COR-4106112 (plate only) — same plate, same fabrication requirements, same prerequisite components. The only difference is that hardware is included.
All four conditions must be true before ordering this kit:
- COR-2206210 redesigned unibody rails are installed (or being installed simultaneously using the skid plate as alignment jig)
- COR-2106110 3-piece long arm crossmember is installed
- Drilling and rewelding capability is available (or a fabrication shop has been scheduled)
- Exhaust routing has been verified to clear the skid plate position
If any of these conditions is not met, resolve it before ordering. This kit does not function without all four.
| Scenario | Result |
|---|---|
| 1999–2004 WJ — with COR-2206210 rails + COR-2106110 crossmember | Confirmed fit — drilling + reweld required |
| 1999–2004 WJ — stock suspension | Does NOT fit |
| 1999–2004 WJ — old-style rails or 2" tall unibody rails | Does NOT fit — upgrade to COR-2206210 first |
| 2005–2010 WK Grand Cherokee | Does NOT fit |
| WJ with aftermarket exhaust | Verify routing before ordering |
| Already have COR-4106112 + COR-4106111 | This kit duplicates what you already have — do not order |
Installation Notes
Identical to COR-4106112 installation — same plate, same fabrication sequence. The only procedural difference is that no separate hardware order is needed before installation begins.
Skill level: Advanced — drilling and welding of WJ unibody rails required. Professional fabrication shop installation strongly recommended without welding experience.
Tools required: Welder, drill with appropriate bit, tape measure or calipers for 39.25" rail spacing verification, Allen wrench or hex socket (for socket cap screws), socket set and torque wrench (for hex cap screws).
Torque specification: 35–40 ft-lb for 3/8"-16 Grade 8 fasteners in steel — confirm against Clayton's installation documentation.
Installation sequence:
- Confirm COR-2106110 crossmember is installed.
- Use the skid plate as the alignment jig — position COR-2206210 rails at 39.25" apart with the skid plate in place to confirm spacing before drilling.
- Drill rails at required locations per Clayton's installation instructions.
- Reweld rails at confirmed 39.25" spacing.
- Apply primer and preferred coating to all bare metal on the skid plate.
- Install skid plate with included Grade 8 hardware — socket cap screws at recessed mounting positions, hex cap screws at standard through-bolt positions. Install flat washers on both sides of all through-bolt locations.
- Torque all fasteners to 35–40 ft-lb.
- Verify exhaust routing clears the skid plate.
- Re-torque all fasteners after first trail run.
Nylon insert lock nuts — single-use: Do not reinstall removed lock nuts. Replace with new hardware (COR-4106111) at any re-assembly.
Common Questions
What's included in this kit vs. COR-4106112?
COR-4106110 includes both the skid plate (COR-4106112) and the hardware kit (COR-4106111). COR-4106112 is the plate only — no hardware. For a new installation, order COR-4106110. Order COR-4106112 only if you already have hardware.
Does this fit my stock WJ?
No — this kit is explicitly not for stock setups. The redesigned unibody rails (COR-2206210) and 3-piece long arm crossmember (COR-2106110) are required. Without them, the mounting geometry for this plate does not exist on the WJ.
Why does this require welding when most skid plates don't?
The WJ is a unibody vehicle. Unlike body-on-frame platforms where skid plates bolt to existing crossmembers or frame rails, the WJ requires the redesigned unibody rails to be drilled and rewelded at precise spacing to create the mounting geometry for this plate. This is an architectural requirement, not a fabrication preference.
The skid plate is the alignment jig — what does that mean?
Clayton's recommended procedure is to position the COR-2206210 unibody rails at the required 39.25" spacing using the skid plate itself as the reference. The plate physically sets the correct spacing before rails are drilled and welded into place. This is why Clayton recommends purchasing the plate and rails simultaneously — welding rails without the plate risks a spacing error that prevents the plate from fitting.
Do the nylon insert lock nuts need to be replaced every time I remove the skid plate?
Yes. Nylon insert lock nuts are single-use by design — the nylon collar deforms on first torque and does not provide reliable locking force after removal. Order COR-4106111 for replacement hardware at any re-assembly.
The Obsidian Take
The COR-4106110 is the correct single-order solution for WJ builders who are ready to close out their Clayton long arm build with transfer case armor. Plate and hardware together, one purchase, nothing left to source separately.
The $15.00 premium over the plate-only (COR-4106112) is a straightforward decision: the hardware is purpose-specified for the WJ skid plate's mounting geometry. Socket cap screws at recessed positions, hex caps at standard through-bolt locations, Grade 8 nylon insert lock nuts throughout — all in one kit, all correct specs, no individual sourcing required.
The fabrication requirements documented on the COR-4106112 page apply here identically. Drilling and welding of the WJ unibody rails are mandatory. The skid plate's alignment jig function is the most important installation detail to internalize before ordering — buy the plate and the COR-2206210 rails together, use the plate to set spacing, drill, reweld, then install. In that order.
This SKU is for: 1999–2004 WJ Grand Cherokee builders on the Clayton long arm system with redesigned COR-2206210 rails and COR-2106110 crossmember who want the complete transfer case skid assembly (plate + hardware) in one order, have confirmed exhaust routing compatibility, and have welding capability or a fabrication shop scheduled.
This SKU is NOT for: Stock WJ owners, WJ owners on old-style rails, 2005+ WK Grand Cherokee owners, anyone who already has COR-4106112 and COR-4106111 separately, or anyone without welding access or fabrication capability.
Manufacturer Data Disclaimer
Product specifications, fitment data, and feature details are sourced from Clayton Off Road manufacturer documentation and verified third-party technical references current at the time of publication. Clayton Off Road reserves the right to modify product specifications without notice. Confirm unibody rail version, crossmember installation, and exhaust routing before ordering. OFAS is not responsible for incompatibility resulting from incorrect rail version, stock suspension configuration, or exhaust conflicts.
Prop 65 Warning
⚠ WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Non-Returnable Notice
This item is non-returnable once installed. Bare metal cosmetic marks from shipping are not defects per Clayton Off Road's stated shipping policy. Verify rail version, crossmember installation, and exhaust routing before ordering. Questions before ordering? Text (469) 407-7538.