Question 1

What is the torque spec for o2 sensor - downstream on a 1992-2000 Lexus SC 300?

Accepted Answer

The primary torque specification for o2 sensor - downstream on a 1992-2000 Lexus SC 300 is 45 Nm (33 lb-ft). Note: Apply anti-seize

Question 2

How many torque specs are there for Lexus SC 300 o2 sensor - downstream?

Accepted Answer

There are 9 torque specifications for o2 sensor - downstream on the 1992-2000 Lexus SC 300 3.0L I6, covering all related fasteners and components.

Component	Nm	lb-ft	Notes
⚠️ Exhaust Flange Bolts	45	33	Apply anti-seize
⚠️ Flange Bolts	50	37	—
⚠️ Flange Bolts	50	37	Apply anti-seize
Hanger Bolts	21	16	—
Hanger Bolts	22	16	—
Heat Shield Bolts	10	7	—
⚠️ Manifold Nuts	35	26	Apply anti-seize
Mounting Bolts	28	21	—
⚠️ O2 Sensor	45	33	Apply anti-seize to threads only

O2 Sensor - Downstream Torque Specifications

Torque Values (9 specifications)