Thermostat, Removing And Installing: Removing

NOTE: Always replace seals and gaskets

Drain coolant. See Draining .
Pull coolant hose off union -3-.
Unbolt securing bolts -4- of union -3- and remove union -3- together with thermostat -1-.

Fig 1: Thermostat & Thermostat Housing Location

Courtesy of VOLKSWAGEN UNITED STATES, INC.