Jeep Wrangler 2018–2020 — technical service bulletin
Bulletin 9004219 · NHTSA communication 10225955 · issued Sep 28, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018–2020
model years
3
vehicle entries
Official summary
PUMP, Water (Water Pump Inlet Tube) For concern of leak at water pump, please check and re-torque water pump inlet tube fasteners as described in Service Bulletin 07-001-20 before replacing the water pump. Please also check the gasket from the block to the water pump. This gasket can be serviced separately.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.