Ford bulletin TSB 24-2408
What it saysSome 2021-2024 Bronco vehicles equipped with a 2.3L/2.7L engine may exhibit a loud front end clink/clunk noise that leads to the identification of a cracked or broken front differential frame mount bracket. NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Dec 10, 2024, received Dec 18, 2024. It names 4 model years (2021–2024). 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 communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
Some 2021-2024 Bronco vehicles equipped with a 2.3L/2.7L engine may exhibit a loud front end clink/clunk noise that leads to the identification of a cracked or broken front differential frame mount bracket.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB 24-2408 | Service bulletin | Dec 10, 2024 | 11011954 | PDF, 427 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| NB3Z-3D171-P | Frame Bracket Repair Kit | — | eBay Motors → |
| W720940-S440 | Stabilizer Bar Link Nut | — | eBay Motors → |
| W719869-S439 | Stabilizer Bar Undershield Bolt | — | eBay Motors → |
| W721449-S439 | Stabilizer Bar Bolt | — | eBay Motors → |
| W520214-S440 | Stabilizer Bar Nut | — | eBay Motors → |
| W721041-S439 | Stabilizer Bar Stud | — | eBay Motors → |
| JB3Z-4B496-B | Cup Bolt And Retaining Straps | — | eBay Motors → |
| KB3Z-3B477-B | Axle Nut (Vehicles Built On Or After 23-Aug-2023) | — | eBay Motors → |
| KB3Z-3B477-A | Axle Nut | — | eBay Motors → |
| W717938-S439 | Caliper Bracket Bolts | — | eBay Motors → |
| W719491-S439 | Hub Bolts | — | eBay Motors → |
| W720861-S439 | Hub Bolts | — | eBay Motors → |
| W716883-S440 | Tie Rod Nut | — | eBay Motors → |
| W720110-S440 | Upper Ball Joint Nut | — | eBay Motors → |
| JB3Z-3B498-A | CV Shaft Retainer | — | eBay Motors → |
| E8UZ-4N282-A | Drain Plug | — | eBay Motors → |
| W500590-S439 | Front Axle Mount Bolt | — | eBay Motors → |
| W716126-S442 | Axle Extension Bolt And Washer | — | eBay Motors → |
| KB3Z-7A443-A | Front Axle Mount Bolt | — | eBay Motors → |
| W717969-S440 | Ball Joint Nut | — | eBay Motors → |
| W717376-S439B | Shield Bolt | — | eBay Motors → |
| MB3Z-5482-B | Stabilizer Bar | 1 | eBay Motors → |
| MB3Z-5484-A | Stabilizer Bar Bushing | 2 | eBay Motors → |
| MB3Z-4B416-A | Axle Seal | — | eBay Motors → |
| YL8Z-4B413-AA | Thrust Bearing | — | eBay Motors → |
| XY-75W85-QL | Motorcraft® SAE 75W-85 Premium | — | eBay Motors → |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 242408A | 2021-2024 Bronco: Inspect (PASS), Program The AWD Module, Includes Road Test (Do Not… | 0.6 hrs |
| 242408B | 2021-2024 Bronco Equipped Without Part Time Engagement: Inspect (FAIL), Repair The… | 5.5 hrs |
| 242408C | 2021-2024 Bronco Equipped Without Part Time Engagement And With Sway Bar Disconnect… | 6.1 hrs |
| 242408D | 2021-2024 Bronco Equipped With Part Time Engagement: Inspect (FAIL), Repair The… | 5.6 hrs |
| 242408E | 2021-2024 Bronco Equipped With Part Time Engagement And With Sway Bar Disconnect… | 6.2 hrs |
| 242408F | Additional Time To Adjust Front Camber And Front Toe (Can Be Claimed With Operation… | 1.1 hrs |
| 242408G | Additional Time To Adjust Front Camber And Front Toe Equipped With Lane Departure… | 1.2 hrs |
Read by machine from the document NHTSA serves (4 pages), read Sep 30, 2026. A part number is shown only where it matches Ford’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 themA 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 4 model years this bulletin names have filed 932 complaints with NHTSA since 2015.
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.
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Ford, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ford TSB 24-2408 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 TSB 24-2408 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.
Which vehicles does TSB 24-2408 cover?
The manufacturer filed it against 4 model years: 2024 Ford Bronco, 2023 Ford Bronco, 2022 Ford Bronco, 2021 Ford Bronco. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built on or before 22 Aug 2023; built on or before 16 May 2022; built on or after 17 May 2022 — the build date is on the certification label in the driver’s door jamb.