2003-2009 Isuzu Ascender Engine R&R Torque Specs

4.2L I6

Applies to 2003, 2004, 2005, 2006, 2007, 2008, and 2009 Isuzu Ascender

Labor Time:10 hours

Torque Values (15 specifications)

Component	Nm	lb-ft	Notes
⚠️ AC Compressor Bolts	25	18	—
⚠️ Alternator Mounting Bolts	50	37	—
Cover Bolts	16	12	—
⚠️ Engine Mount-to-Block Bolts	65	48	—
⚠️ Engine Mount-to-Frame Bolts	75	55	—
⚠️ Exhaust Manifold Nuts	30	22	Apply anti-seize, work hot-to-cold
⚠️ Flywheel Bolts	95	70	Often TTY, tighten in star pattern
⚠️ Gasket Bolts	20	15	—
Mounting Bolts	27	20	—
⚠️ Mounting Bolts	47	35	—
⚠️ Oil Drain Plug	35	26	Use new crush washer
⚠️ Power Steering Pump Bolts	25	18	—
Sensor Bolts	11	8	—
⚠️ Starter Mounting Bolts	50	37	—
⚠️ Transmission-to-Engine Bolts	55	41	—

The primary torque specification for engine r&r on a 2003-2009 Isuzu Ascender is 25 Nm (18 lb-ft).

There are 15 torque specifications for engine r&r on the 2003-2009 Isuzu Ascender 4.2L I6, covering all related fasteners and components.