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Service bulletin M1583

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10232453
Published by NHTSA2023-03-04
Manufacturer's numberM1583
Manufacturer's date2023-02-16
NHTSA componentENGINE AND ENGINE COOLING; POWER TRAIN

NHTSA's summary

SERVICE BULLETIN M1583: 2023 PAN AM RADIATOR IMPROVEMENTS. PURPOSE: The purpose of this bulletin is to notify about the revised component on the 2023 Pan Am radiator. The old part number has been superseded to a new part number. For Pan America models built on January 31, 2023 and later, a clamp was added to the lower radiator assembly to support the hose.

The document

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

Vehicles listed
HARLEY-DAVIDSON RA12502021 to 2023
HARLEY-DAVIDSON RA1250S2021 to 2023

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