1990-2000 Lexus LS 400 Spark Plug Wires Torque Specs

4.0L V8

Applies to 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, and 2000 Lexus LS 400

Labor Time:0.8 hours

🔧 Torque Values7 specifications

Component	lb-ft	Nm	Notes
Cover Screws	9	12	—
Engine Cover Clips	2	3	—
Ignition Coil Bolt	9	12	—
Ignition Coil Bolts	6	8	—
Mounting Bolts	23	31	—
⚠️ Spark Plug	17	23	Gap before install
⚠️ Spark Plugs - Aluminum Head	15	20	Apply anti-seize to threads

⚠️ = 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 spark plug wires on a 1990-2000 Lexus LS 400 is 12 Nm (9 lb-ft).

There are 7 torque specifications for spark plug wires on the 1990-2000 Lexus LS 400 4.0L V8, covering all related fasteners and components.