TeraFlex Differential Cover Dana 30/ M186 Black Jeep Wrangler JL 2018-2021/ Jeep Gladiator 2020-2021



  • Offroad-Ready Design
  • Several Fluid Ports
  • Simple Installation
  • Ductile Iron Construction

TeraFlex Black Dana 30 and M186 Differential Cover for 2018, 2019, 2020 and 2021 Jeep JL Wranglers and 2020-2021 Jeep Gladiators.

Servicing and protecting your Jeep's Dana 30 axles is crucial. The right differential cover can help you do both! Prevent damage and improve ease of maintenance with this Differential Cover (3990731) from Teraflex.

Features and Benefits:
- New Dana HD Differential Covers for the new AdvanTEK axles
- Cast from the same high-strength, 3/8”-thick ductile-iron as HD axle housings
- Top fill tube/inspection port accommodates a funnel or gear oil bottle pour spout
- Fluid level port doubles as a mid-height inspection port
- All required hardware included
- Red TeraFlex logo

Beef up your axle housings with this Dana HD Differential Cover! TeraFlex heavy-duty differential covers withstand trail carnage caused by rocks, debris, and other obstacles. They also have convenient features like a top-fill fluid port and a mid-height fluid level port.

Vehicle Fitment:
- JL Wrangler (2-door)
- JL Wrangler Unlimited (4-door)
- JT Gladiator (pickup)
- Dana 30 AdvanTEK (M186) Front Axle Housings

California Residents: Proposition 65 Warning

Installation Difficulty


Novice skill is required for this installation.

Vehicle Fitment

This product will fit the following Gladiator years:

  • 2020,
  • 2021,

This product will fit the following Wrangler years:

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