1998-2000 Lexus GS 400 Water Pump Torque Specs

4.0L V8

Applies to 1998, 1999, and 2000 Lexus GS 400

Labor Time:2.5 hours

🔧 Torque Values6 specifications

Component	lb-ft	Nm	Notes
Coolant Hose Clamps	3	4	Spring clamps preferred
⚠️ Housing Bolts	12	16	—
⚠️ Pump Bolts	21	28	—
Thermostat Housing Bolts	10	14	—
⚠️ Timing Cover Bolts	15	20	If accessed
⚠️ Water Pump Bolts	18	24	Torque in sequence

⚠️ = Critical torque value | Always verify with vehicle-specific service manual

⚠️ Some critical specs are estimated. Please verify sequence.

1990-1997 4.6L V8 Modular

2007-2012 3.7L I5

2011-2016 6.7L V8 Power Stroke Diesel

1992-1995 1.5L I4 D15

2016-2023 2.0L Turbo I4

1995-1999 2.0L Turbo I4

The primary torque specification for water pump on a 1998-2000 Lexus GS 400 is 4 Nm (3 lb-ft). Note: Spring clamps preferred

There are 6 torque specifications for water pump on the 1998-2000 Lexus GS 400 4.0L V8, covering all related fasteners and components.