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Jeep Gladiator JT (Modern Gladiator)

2020–2026 · JT · truck

Built alongside the Wrangler JL at Toledo on a stretched JL frame — same removable doors, fold-down windshield, and removable top, with a 60.3-inch steel bed grafted on. Engines: 3.6L Pentastar V6 (285hp) standard, 3.0L EcoDiesel V6 (260hp) available 2021-2023, and a 2.0L Hurricane turbo I4 coming for 2027. Standard 4WD with Command-Trac, Selec-Trac, or Rock-Trac depending on trim. European sales ended 2023; remains the only midsize pickup with a solid front axle.

Watch out: Death wobble — Gladiator inherits the JL's front-axle steering-shimmy issue. Front-end vibration under braking or over expansion joints (especially on lifted trucks or with larger tires) is well-documented; Mopar TSB 22-002-19 covers steering-damper replacement on JL, and the same fix applies to Gladiator. The EcoDiesel V6 also had documented EGR cooler and high-pressure-fuel-pump failures during its short 2021-2023 run.

What your Gladiator takes

The parts and fluids that fit this generation. Specs we publish are confirmed against two independent sources; the rest fill in as we verify them.

  • Tire size245/75R17✓ VerifiedView
  • Wiper blades16" driver · 16" passenger✓ VerifiedView
  • CoolantMopar OAT MS.90032 · ~11.2 qtFrom owner's manualShop
  • BatteryNot catalogued yetFind yours soon
  • Engine oilNot catalogued yetFind yours soon
  • Oil filterNot catalogued yetFind yours
  • Engine air filterNot catalogued yetFind yours
  • Cabin air filterNot catalogued yetFind yours
  • Spark plugsNot catalogued yetFind yours soon
  • Headlight bulbsNot catalogued yetFind yours soon
  • Brake fluidNot catalogued yetFind yours soon
  • Transmission fluidNot catalogued yetFind yours soon
  • Tire pressureNot catalogued yetFind yours soon
  • Key fob batteryNot catalogued yetFind yours soon
  • Power steering fluidNot catalogued yetFind yours soon
  • Differential fluidNot catalogued yetFind yours soon
  • Serpentine beltNot catalogued yetFind yours soon
  • Brake padsNot catalogued yetFind yours soon
  • Wheel fitmentNot catalogued yetFind yours soon
  • Brake rotorsNot catalogued yetFind yours soon
  • ThermostatNot catalogued yetFind yours soon
  • A/C refrigerantNot catalogued yetFind yours soon
  • Fuel filterNot catalogued yetFind yours soon

Floor mats

Our top custom-fit pick for the Jeep Gladiator is the WeatherTech Custom Fit FloorLiners 1st & 2nd rows.

Floor mats for the Jeep Gladiator →

Full clubhouse — owner Garage Lineage, common problems, year-by-year notes, and product picks — is on the build list.

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