Common-failure cooling parts for the Wrangler JL (2018+) & JT. Each page lists the current Mopar number, what it supersedes, aftermarket equivalents, failure symptoms and whether to rebuild or replace, with a source for every number.
| Part | Mopar # | Fits |
|---|---|---|
| Thermostat Housing Assembly (JL 3.6) | 4893926AH | 2018-and-later Wrangler JL with the 3.6 Pentastar, per Mopar parts catalogs. It's a different housing from the... |
| Water Pump (JL 3.6, non-eTorque) | 4893941AD | 2018-and-later JL Wrangler 3.6 without eTorque. Sources disagree on model years: MoparPartsGiant lists the... |