BMW bulletin B110326
What it saysThis Service Bulletin provides instructions to clean the intake valves using the BMW Carbon Blaster Tool P/N 81 29 2 208 034 and the S68T / XB1T Kit P/N 83 30 5 BAD 3D5. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Aug 12, 2026, received Jul 31, 2026, about the engine — 2 documents under this number. It names 7 model years (2025). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Service Bulletin provides instructions to clean the intake valves using the BMW Carbon Blaster Tool P/N 81 29 2 208 034 and the S68T / XB1T Kit P/N 83 30 5 BAD 3D5. Refer to SI B04 12 11 for existing documentation about the carbon blaster tool and SI B04 02 26 for the S68T /XB1T tool kit.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B110326 | Service bulletin | Aug 12, 2026 | 11036376 | PDF, 3,597 KB |
| B110326 | Service bulletin | Jul 16, 2026 | 11035392 | PDF, 2,813 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 81 29 2 208 034 | — | — | |
| 83 19 2 446 563 | — | — | |
| 83 22 2 339 920 | Refrigerant oil Sanden SP-A2 (DN = 250 ml) Top up as needed | — | eBay Motors → |
Read by machine from the document NHTSA serves (44 pages), read Sep 30, 2026. A part number is shown only where it matches BMW’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2025 BMW M5 Sportswagon.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 6 model years this bulletin names have filed 100 complaints with NHTSA since 2015.
Subject: Formal Complaint – Safety Issue, Repeated Repair Failure, and Dealer Negligence (BMW X7) To Whom It May Concern, I am filing a formal complaint regarding a serious and ongoing safety issue involving my BMW X7 (VIN: ), as well as repeated failure by an authorized BMW dealership (Fields BMW Winter Park, Florida) to properly…
2025 BMW X7 · Engine · filed with NHTSA Apr 23, 2026 · ODI 11733270
Multiple issues with the software. 1. Since yesterday, car failed to start with the message "software upgrade failed". Sitting like a brick now - engine doesn't start and can't get the car off parking mode. 2, Last week, the remote functions of the software as well as emergency call system stopped working.
2025 BMW X5 · Engine · filed with NHTSA Jun 28, 2025 · ODI 11669880
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group75 other manufacturer communications filed against these BMW models under the same component group (engine), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 0011320800 | Service campaign | Oct 21, 2026 | The cylinder head cover was not installed correctly at the assembly plant. |
| 0012870600 | Service campaign | Oct 10, 2026 | Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases itmay happen that stored fault… |
| 1171901000 | Warranty extension | Sep 22, 2026 | The Exhaust Gas Recirculation (EGR) Cooler (with EGR Valve) and the Auxiliary Exhaust Gas Recirculation (EGR) Cooler limited warranty for de… |
| B121126 | Service bulletin | Sep 9, 2026 | Potential customer complaints with no fault codes stored / No MIL displayed. 1. “Rough idle after idling for a longer period of time” 2. “Ve… |
| B064526 | Other | Sep 9, 2026 | Intake Muffler Return |
| 0011460700 | Emissions | Aug 26, 2026 | The return springs on the exhaust camshaft followers (switchable rocker arm) may break. |
| B064426 | Other | Aug 22, 2026 | Air Flap Return |
| B130126 | Service campaign | Aug 14, 2026 | Delivery Stop - Exhaust System Gasket |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for BMW, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is BMW B110326 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the B110326 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every BMW warranty extension on file lists the ones BMW has filed.
Which vehicles does B110326 cover?
The manufacturer filed it against 7 model years: 2025 BMW 7 Series, 2025 BMW M, 2025 BMW X5, 2025 BMW X6, 2025 BMW X7, 2025 BMW XM and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.