WenmarOpen by Wenmar Pro

Service bulletin 9804-1559

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 id601941
Published by NHTSA1998-08-31
Manufacturer's number9804-1559
Manufacturer's date1998-08-31
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

CONCERN OF MAGNETIZATION OF THE HYDRAULIC VALVE TAPPETS ( LIFTERS ) CAN RESULT IN FAILURE. *YC

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

Vehicles listed
PORSCHE CARRERA1998

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