Common-failure engine parts for the Wrangler JK (2007–2018). 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 |
|---|---|---|
| Oil Filter Housing / Oil Cooler Assembly (3.6 Pentastar) | 68596317AB | Current Mopar number for 2014-and-later JK 3.6. The Dorman 926-959 aluminum kit is also cataloged for JL 3.6... |
| Spark Plug (JK 3.6 Pentastar) | SP149125AF | 2012–2017 Wrangler and 2018 Wrangler JK, 3.6 Pentastar. The 2007–2011 3.8 uses a different plug (Champion... |
| Ignition Coil (JK 3.6 Pentastar) | 5149168AJ | 2012–2018 Wrangler JK with the 3.6 Pentastar. One coil per cylinder (six total). |
| Camshaft Position Sensor (3.6 Pentastar) | 5149141AF | 2012–2018 Wrangler JK with the 3.6 Pentastar. Mopar's listing includes the mounting screw. |