Service bulletin M1641

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

SERVICE BULLETIN M1641: TOURING COOLING SYSTEMS IDENTIFICATION. PURPOSE: This bulletin informs dealers of a new naming convention for the cooling system on the redesigned 2023 and 2024 Harley-Davidson Touring models. Harley-Davidson is communicating that there is a new naming convention for the 2023 CVO Street Glide (FLHXSE), CVO Road Glide (FLTRXSE) and 2024 Street Glide (FLHX), Road Glide (FLTRX), CVO Street Glide (FLHXSE), CVO Road Glide (FLTRXSE) and CVO Road Glide ST (FLTRXSTSE) cooling system design. This cooling system will be referred to as Center-Cooled, based on the radiator mounting location. All communications moving forward, will identify this cooling system and use the naming convention of Center-Cooled. This will aid the dealer network in quick identification as we have for the other cooling systems.

The document

• NHTSA's copy of the document (PDF)
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The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Transmission and driveline

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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