3000GT AWD V6-2972cc 3.0L DOHC Turbo (1991)
Thermostat: All Technical Service Bulletins
Cooling System - New Design Thermostat Installation
NO.
TSB-91-14-001
DATE
February, 1991
MODEL
3000GT
SUBJECT:
THERMOSTAT INSTALLATION
PURPOSE
1991 3000GT models built after October 2, 1990 incorporate a new cooling system thermostat design. The new design thermostat incorporates a rubber
ring around the mounting flange. This rubber ring replaces the conventional thermostat gasket. The thermostat case has been machined with a 4.1 mm
recess which allows clearance for the rubber ring and provides the correct sealing surface.
CAUTION: Do not use a gasket with thermostats equipped with a rubber ring.
When replacing the thermostat it is important to determine the type of thermostat (with ring vs. without ring) before installation. Use of the wrong
thermostat may cause damage to the case, thermostat, or engine.
PARTS INFORMATION
Thermostats, cases and gaskets are not interchangeable.
PARTS INFORMATION continued
PART NAME
NEW DESIGN
EARLIER DESIGN
PART NUMBER
PART NUMBER
THERMOSTAT
MD174234
MD997679
GASKET
NOT REQUIRED
MD146834
CASE, NON-TURBO
MD174229
MD146830
CASE, TURBO
MD174231
MD160379
