NHTSA service bulletin

NHTSA Service Bulletin 10189993: 2021 Harley-davidson Flhp

Official manufacturer communication context for 2021 Harley-davidson Flhp, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10189993 summary graphic for 2021 Harley-davidson Flhp
10189993NHTSA document ID
Manufacturer communicationcommunication type
18affected 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

GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1110: 2021 TOURING & TRIKE - COOLFLOW FAN FITMENT. PURPOSE: Revision. To inform dealers that the CoolFlow Fan is temporarily not a fitment on 2021 Touring, Trike, Custom Vehicle Operations (CVO) Touring and Police Touring motorcycles due to the 2021 Electronic Control Module (ECM) change on Milwaukee-Eight (MKE-8) models. Update: Starting the week of March 15, 2021, Digital Technician II (DT II) will have the updated calibrations for the CoolFlow Fan for vehicles manufactured before February 15, 2021. NOTE: After the DT II release the week of March 15, 2021, the CoolFlow Fan can be enabled on 2021 vehicles built prior to February 15, 2021 after completing an ECM reflash using DT II.

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-davidsonFlhp2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhr2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhrxs2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlht2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhtcutg2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhtcutgse2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhtk2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhtk Shrine2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhtkse2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhtp2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhx2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhxs2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhxse2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlrt2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFltrk2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFltrx2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFltrxs2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFltrxse2021Ask 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 10189993?

GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1110: 2021 TOURING & TRIKE - COOLFLOW FAN FITMENT. PURPOSE: Revision. To inform dealers that the CoolFlow Fan is temporarily not a fitment on 2021 Touring, Trike, Custom Vehicle Operations (CVO) Touring and Police Touring motorcycles due to the 2021 Electronic Control Module (ECM) change on Milwaukee-Eight (MKE-8) models. Update: Starting the week of March 15,.

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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