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Service bulletin 1HD-K3K5Z-01

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 id10096305
Published by NHTSA2017-03-24
Manufacturer's number1HD-K3K5Z-01
Manufacturer's date2016-12-12
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

NHTSA's summary

INSPECTION OF SPECIFIC COMPONENT: HEADER ASSEMBLY, PART NUMBER 65600176, MAY BEEN INTERNALLY DAMAGED (DAMAGE IS NOT VISIBLE).

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Exhaust and emissions, Exhaust manifold, pipes and muffler

Vehicles listed
HARLEY-DAVIDSON FLHTCU2017
HARLEY-DAVIDSON FLHXS2017

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