Jeep Wrangler 2020–2021 — technical service bulletin
Bulletin 9004333 · NHTSA communication 10223999 · issued Nov 18, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2021
model years
2
vehicle entries
Official summary
ADAPTER, Engine Oil Filter If you are replacing the oil cooler/filter housing for an oil leak that appears to be between the cooler, and the engine block, please refer to all published service information regarding proper diagnosis of oil leaks in this area before proceeding. If all proper diagnosis has been performed, and there is still an active leak, please replace the oil cooler/filter housing gasket (pn# 68505111A$) first before replacing the housing.
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.