Harley Davidson recall: 2024-2026 milwaukee-eight airbox baseplate
- What's wrong
- The airbox baseplate may have a blocked breather port due to a supplier manufacturing issue. A blocked breather port can result in pressure build-up in the crankcase. If the dipstick is removed while the Version: 3.0 (Jan 2025) crankcase is pressurized oil may be discharged…
- What to do
- Contact a Harley Davidson dealer to book the free repair. Verify that air flows through the hose and into air box backing plate. If the air box backing plate port is blocked rework the breather passage.
What’s wrong
The airbox baseplate may have a blocked breather port due to a supplier manufacturing issue. A blocked breather port can result in pressure build-up in the crankcase. If the dipstick is removed while the Version: 3.0 (Jan 2025) crankcase is pressurized oil may be discharged from the fill spout creating a risk of injury.
The fix
Verify that air flows through the hose and into air box backing plate. If the air box backing plate port is blocked rework the breather passage.
Vehicles affected
| Model | Built from | Built to | Vehicles |
|---|---|---|---|
| Fltrt | 17 Jun 2025 | 11 Feb 2026 | 13 |
| Flhlt | 16 Jun 2025 | 11 Feb 2026 | 6 |
| Fxbr | 3 Oct 2023 | 11 Feb 2023 | 63 |
| Flfb | 4 Oct 2024 | 11 Feb 2026 | 102 |
| Flhx | 3 Oct 2023 | 11 Feb 2026 | 196 |
| Fltrx | 2 Oct 2023 | 11 Feb 2026 | 131 |
| Flhxu | 16 Sep 2024 | 11 Feb 2026 | 50 |
| Flhxl | 5 Nov 2025 | 11 Feb 2026 | 5 |
| Fltrxl | 11 Sep 2025 | 11 Feb 2026 | 2 |
How to check your vehicle
Use the official DVSA checker with your registration number to see if your exact vehicle is included. If it is, the manufacturer should have written to the registered keeper. The repair is free, even if you bought the vehicle second-hand.
Updated 30 April 2026. This page summarises an official notice. Details can change – always follow the official notice.