RAM 2500 2021 — technical service bulletin
Bulletin 9004245 · NHTSA communication 10221373 · issued Jun 22, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021
model years
4
vehicle entries
Official summary
GASKET, Timing Case Cover, Rear Gear Housing For 2021 Model Year only. If you are replacing the timing gear housing gasket due to an oil leak, please be sure to also replace all outer timing gear housing bolts (PN# 04638665 and 04882109). Do not discard these bolts as engineering will be requesting them to be returned for analysis.
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.