TSB 9100839 — Ram Service bulletin
9100839 is a service bulletin on file with NHTSA for the Ram 1500, 2019–2021 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. 3-way valves are available in STAR Parts as two distinct components and must be selected correctly based on application. The High Temp 3-way valve (68309834AC) is located between the engine and the bulkhead at the rear of the engine compartment. The Low Temp 3-way valve…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 9100839 names
Every document filed under 9100839
| Document ID | Filed | Type |
|---|---|---|
| 9100839 | June 9, 2026 | Service bulletin |
What 9100839 covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 9100839?
9100839 is a service bulletin filed with NHTSA by Ram, covering the Ram 1500 across the 2019–2021 model years. NHTSA's summary reads: 3-way valves are available in STAR Parts as two distinct components and must be selected correctly based on application. The High Temp 3-way valve (68309834AC) is located between the engine and the bulkhead at the rear of the engine compartment. The Low Temp 3-way valve…
Which vehicles does 9100839 cover?
NHTSA's file names Ram 1500 (2019–2021). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 9100839 a recall, and is the repair free?
No. 9100839 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 9100839?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 9100839, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 9100839. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.