TSB B25-049 — Acura Service bulletin
B25-049 is a service bulletin on file with NHTSA for the Acura RDX, 2019–2026 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Service Bulletin - Oil leak at the cam chain tensioner inspection cover due to and insufficient sealant adhesion on the inspection cover.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years B25-049 names
Every document filed under B25-049
| Document ID | Filed | Type |
|---|---|---|
| B25-049 | September 17, 2025 | Service bulletin |
What B25-049 covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B25-049?
B25-049 is a service bulletin filed with NHTSA by Acura, covering the Acura RDX across the 2019–2026 model years. NHTSA's summary reads: Service Bulletin - Oil leak at the cam chain tensioner inspection cover due to and insufficient sealant adhesion on the inspection cover.
Which vehicles does B25-049 cover?
NHTSA's file names Acura RDX (2019–2026). 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 B25-049 a recall, and is the repair free?
No. B25-049 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 B25-049?
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 B25-049, 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 B25-049. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.