MB1099-42

Skid Plate System for Jeep JL 4-Door 3.6L 2021-2022

$1,429.00
Shipping calculated at checkout.

Compatible With:

JLJLU
Heavy duty flush belly skid plate system for 2021-2022 Jeep JLU 3.6L with smooth underbody protection, recessed hardware, and 4 piece drivetrain armor.

Builders pushing the newer Jeep JLU platforms in rocks quickly find the factory underbody still leaves critical drivetrain components exposed. The transmission, transfer case, fuel tank, and exhaust all sit in areas that take abuse on difficult trails, and factory protection often creates edges and drop points that can hang up on obstacles. With the engine mount changes on the 2021-2022 3.6L platform, underbody packaging changed as well, which is why this skid system was developed specifically for these model years.

The Motobilt MB1099-42 Skid Plate System was designed to solve that with a true flush belly approach built specifically for the 2021-2022 Jeep JLU 3.6L. This 4 piece skid system uses keyed overlapping panels and recessed hardware to create a smooth underside with no exposed bolt heads or lips to catch on rocks. The boat side design improves how the Jeep transitions across obstacles while the integrated crossmember adds strength and rigidity to the chassis layout.


Designed from a builder’s perspective, this is more than armor. It is part of the underbody structure. Heavy 3/16 inch steel construction protects critical components while maintaining serviceability with a dedicated oil pan access panel, removable skid sections, and a removable transmission skid access panel for direct access to the front driveshaft yoke at the transfer case. That access is especially useful for trail repairs if a front driveshaft u-joint fails, and it makes routine maintenance much easier without pulling the skid system apart. Notched ends allow a vehicle lift to still be used for repairs, something often overlooked in skid system design.

For builders running the updated JLU platform, this system delivers underbody protection, smooth belly clearance, and serviceability for serious trail use and rock crawling.

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Important Information
  • Designed for 2021-2022 Jeep Wrangler JLU 4 Door with 3.6L
  • Specifically designed around 2021-2022 engine mount configuration
  • Does not fit earlier JL 3.6L models. Use original JL skid system for 2018-2020 applications MB1099-41
  • No drilling required
  • Removable transmission skid access panel allows access to front driveshaft yoke at transfer case
  • Designed for easier trail repairs and front driveshaft u-joint maintenance
  • No need to drop or empty fuel tank during installation
  • Ships as complete 4 skid system with hardware
Product Specifications

Vehicle Fitment

2021-2022 Jeep Wrangler JLU 4 Door 3.6L

Material

3/16 inch steel

Design

4 piece flush belly skid system

Boat side profile

Recessed self-centering hardware

Built-in crossmember

Large oil pan access panel


Removable front driveshaft yoke access panel in transmission skid

Lift-compatible notched ends

Weight

Approximately 200 lbs

Included Components

Transmission / Transfer Case Skid Plate

Engine Skid Plate

Fuel Tank Skid Plate

Exhaust Skid Plate

Hardware

Manufactured

Made in the USA

Notes
  • Test fit all skid sections before final torque.
  • Individual skid panels can be removed for service and maintenance.
  • Designed to maintain serviceability while improving underbody protection.
  • Front edge trimming may be required with some long arm suspension systems.
Frequently Asked Questions

What makes a flush belly skid system different from standard skid plates?

A flush belly system removes exposed edges, bolt heads, and drop points that can hang up on rocks. It creates a smoother underside that slides over obstacles more effectively.

Does this Jeep JLU skid plate system improve rock crawling clearance?

It improves how the Jeep moves across obstacles by reducing snag points and using a boat side design, which helps with obstacle transition.

Can I service my Jeep without removing the full skid system?

Yes. The system includes an oil pan access panel and individual skids can be removed separately for maintenance and repairs.

Will my rocker guards fit with this skid plate?

Yes. This skid system works with all body mounted rocker guards and with Motobilt frame mounted rocker guards as well.

Will this work with a long arm kit?

Yes. Most long arm kits will not require modifications at the rear. Up front, most applications only require trimming the front edge of the skid plate to clear the front lower control arms.

What is the removable driveshaft access panel for?

The transmission skid includes a removable access panel that provides access to the front driveshaft yoke at the transfer case. This is especially useful if you need to service the driveshaft, replace a damaged u-joint after trail failure, or perform maintenance without removing the full skid system.

Can I service the front driveshaft without removing the skid plate?

Yes. The removable access panel was added specifically so the front driveshaft yoke can be accessed without removing the full transmission skid, making both maintenance and trail repairs much easier.

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