Genuine GM Oxygen Sensor 12617332 – Suits Holden/VF Commodore & HSV V8 6.2L LS3/LSA Upstream

Genuine GM Oxygen Sensor 12617332 is a factory-original heated four-wire wide-band O₂ sensor, designed for upstream (pre-catalytic converter) placement on high-output V8 engines. It supplies the engine control system with precise exhaust-oxygen readings, enabling accurate fuel-trim control, optimum performance and emissions compliance.

Fitment & Compatibility (Australia):

• Holden VF Commodore V8 6.2 L LS3 (Sedan/Wagon) – 2013-2017
• HSV VF / WN V8 6.2 L LSA Supercharged (Sedan/Wagon/Ute) – 2013-2017
• Position: Upstream sensor (pre-cat) for GM V8 exhaust systems

Specifications:

• OEM Part Number: 12617332
• Sensor Type: Heated wide-band oxygen sensor (4-wire connector)
• Location: Front (pre-catalytic converter) exhaust manifold/header on LS3/LSA style V8
• Function: Monitors oxygen levels in exhaust gases to enable the ECU to maintain proper air-fuel ratio and maximise engine efficiency
• Direct OEM replacement – compatible with original wiring harness and engine ECU settings for the listed fitment

Key Features:

• Genuine GM component – ensures factory-level calibration and durability for high-performance V8 applications
• Wide-band design is ideal for performance or tuned engines requiring accurate fuel-monitoring and advanced tuning flexibility
• Essential for maintaining fuel economy, correct mixture control and smooth drivability in the Holden/HSV V8 platforms

Installation Tip: Before installation, inspect the wiring harness for heat or corrosion damage and clean the sensor port before fitting. Apply a high-temperature anti-seize compound to the sensor threads (avoiding the sensor tip) and tighten to GM OEM torque specification. After installation, reset the ECU fuel trims and clear any logged fault codes to ensure correct sensor operation.