This bulletin applies to 2018-2022 Jeep Wrangler vehicles built on or before March 10, 2022, and equipped with a 2.0L I4 turbo PHEV, 2.0L I4 turbo E-torque or 2.0L I4 turbo engine.
Remove, apply thread sealant and reinstall both water inlet tube fasteners one at a time.
This bulletin applies to 2018-2022 Jeep Wrangler vehicles built on or before March 10, 2022, and equipped with a 2.0L I4 turbo PHEV, 2.0L I4 turbo E-torque or 2.0L I4 turbo engine. A coolant leak and/or low coolant level may be found.
Pressure check the cooling system. If a leak at the water pump inlet tube is found, remove one fastener and apply Mopar 04318031AC or equivalent to one of the fastener’s threads. Install the water pump inlet tube fastener and tighten to 97 in-lb. Remove the other water pump inlet tube fastener and apply the thread sealant to that fastener and tighten to 97 in-lb.
Wait 10 minutes after the last fastener was installed prior to pressure testing again, or run the engine to allow for the blue locking adhesive to cure.
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety ofspecialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
