Genuine GM Oxygen Sensor 25326439 – Suits Holden Commodore VT/VX/VY 5.7L LS1 V8

Genuine GM Oxygen Sensor 25326439 is an OEM heated four-wire O₂ sensor designed for GM’s Gen III LS1 V8 engines. It accurately measures oxygen levels in the exhaust gases, allowing the ECU to adjust fuel delivery for maximum efficiency, performance, and emissions control.

Fitment:

• Holden Commodore VT / VX / VY 5.7 L LS1 V8 (Sedan, Wagon, Ute)
• Holden Statesman / Caprice WH / WK 5.7 L LS1 V8
• HSV LS1 models equipped with factory exhaust systems

Specifications:

• OEM Part Number: 25326439
• Sensor Type: Heated (4-wire) oxygen sensor
• Location: Upstream of catalytic converter (pre-cat)
• Function: Measures exhaust oxygen to maintain proper air-fuel ratio
• Direct OEM replacement for factory LS1 sensors – no modifications required

Key Features:

• Genuine GM component for factory-accurate readings and durability
• Restores optimal fuel economy and engine performance
• Ensures smooth idle and correct mixture for EFI control
• Supplied ready to install with pre-terminated connector

Installation Tip: Inspect the old sensor wiring for damage before installation. Apply anti-seize to the threads (avoid the sensor tip) and torque to factory specifications for a secure seal.