RAM 2500 2019–2022 — technical service bulletin
Bulletin 9100021 · NHTSA communication 10225301 · issued Aug 3, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2022
model years
16
vehicle entries
Official summary
Seal, Crankshaft Oil, Rear,Retainer, Crankshaft Oil Seal US dealers only: If you are replacing the rear main seal due to an oil leak, do NOT remove the seal from the retainer. Replace the seal and retainer (pn# 05086755A$) as a complete unit. Engineering needs to obtain the seals and retainers back for analysis without them having been disassembled. Once repairs are complete, please contact FCA Redacted Content to return the parts.
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.