1998-2000 Lexus GS 400 Piston Rings - All Torque Specs

4.0L V8

Applies to 1998, 1999, and 2000 Lexus GS 400

Labor Time:20 hours

🔧 Torque Values5 specifications

Component	lb-ft	Nm	Notes
Cover Bolts	14	19	—
⚠️ Gasket Bolts	17	23	—
Mounting Bolts	23	31	—
⚠️ Mounting Bolts	40	55	—
Sensor Bolts	9	12	—

⚠️ = 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 piston rings - all on a 1998-2000 Lexus GS 400 is 19 Nm (14 lb-ft).

There are 5 torque specifications for piston rings - all on the 1998-2000 Lexus GS 400 4.0L V8, covering all related fasteners and components.