NHTSA service bulletin

NHTSA Service Bulletin 10164794: 1995, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Harley-davidson Flstc

Official manufacturer communication context for 1995, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Harley-davidson Flstc, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10164794 summary graphic for 1995, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Harley-davidson Flstc
10164794NHTSA document ID
Technical service bulletincommunication type
11affected 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 M1493: FUEL CAPS AND CUP CHANGE. REVISION. PURPOSE: This bulletin informs dealers that Harley-Davidson is making a fuel tank running change on side fill Touring, Police Touring, Touring CVO, Trike and all Softail and Sportster platforms. This running change is starting May 22, 2019. Service parts for Dyna tanks and fuel caps are also covered by this bulletin. The running change is to the thread pitch in the fuel cap and in the fuel cup. The running change will affect OE (Original equipment) and P&A (Parts and Accessories) parts. All new fuel tanks and caps are retrofittable to previous years. Fuel caps from previous years will not fit on a new fuel tank.

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-davidsonFlstc2017Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlstn2017, 2018Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxdb2007-2018Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxdbc 1032016Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxdc2005-2014Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxlr2018, 2019Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxr21999Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxr31999Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxr42000Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxrp1995Ask for service records and run the exact VIN before purchase.
Harley-davidsonFxst1999-2011Ask 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 10164794?

SERVICE BULLETIN M1493: FUEL CAPS AND CUP CHANGE. REVISION. PURPOSE: This bulletin informs dealers that Harley-Davidson is making a fuel tank running change on side fill Touring, Police Touring, Touring CVO, Trike and all Softail and Sportster platforms. This running change is starting May 22, 2019. Service parts for Dyna tanks and fuel caps are also covered by this bulletin. The running change is to the thread.

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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