NHTSA service bulletin

NHTSA Service Bulletin 10254115: 2006-2024 Harley-davidson Fld

Official manufacturer communication context for 2006-2024 Harley-davidson Fld, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10254115 summary graphic for 2006-2024 Harley-davidson Fld
10254115NHTSA document ID
Technical service bulletincommunication type
173affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

SERVICE BULLETIN M1612 (REV A): MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: Revision. Update: Notes for Table 3 and 4. * Updated: Part Numbers. This bulletin informs dealers that all: Twin Cam gear packs on CVO, Dyna, Police, Softail, Touring & Trike models and Milwaukee-Eight gear packs on CVO, Police, Softail, Touring & Trike models ordered after December 04, 2023 will not come with the shift drum, forks, shafts and related hardware. Models Affected: 2006-2017 Twin Cams: Dyna models 2007-2016 Twin Cams: CVO, Police, Touring and Trike models 2007-2017 Twin Cams: Softail models 2017-2024 Milwaukee-Eight: CVO, Police, Touring and Trike models 2018-2024 Milwaukee-Eight: Softail models

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
Harley-davidsonFld2012, 2014, 2015, 2016Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlde2017-2020Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfb2018, 2019Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs2018-2024Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs Anv2018Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs Anx2018Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbsanv2020, 2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlh2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhc2017-2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhcs2018-2024Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhcs Anv2018, 2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhfb2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhp2007-2024Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhpe2007-2011Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhpei2006Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhpi2006Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhr / Road King2017Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhr2006-2022Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 10254115?

SERVICE BULLETIN M1612 (REV A): MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: Revision. Update: Notes for Table 3 and 4. * Updated: Part Numbers. This bulletin informs dealers that all: Twin Cam gear packs on CVO, Dyna, Police, Softail, Touring & Trike models and Milwaukee-Eight gear packs on CVO, Police, Softail, Touring & Trike models ordered after December 04, 2023 will not come with the shift.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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