NTK 25146 Oxygen Sensor Heated Narrowband Zirconia 4-Wire

The NTK 25146 is an OE-type replacement oxygen sensor designed to restore proper closed-loop feedback between your vehicle's exhaust system and engine control unit. As a narrowband switching zirconia sensor, it continuously monitors exhaust oxygen content and signals the ECU to maintain the correct air-fuel ratio, supporting optimal engine performance, fuel efficiency, and emissions control. NTK is the world's largest OEM oxygen sensor manufacturer, and their expertise in advanced ceramics means each sensor is engineered with full control over the zirconia ceramic element from raw material through finished product.

Key Features:

• OE-type replacement for direct-fit, specific application accuracy
• Heated narrowband switching zirconia sensor technology
• 4-wire construction with a 16.75-inch wiring harness
• Male blade-terminal rectangular connector
• M18 x 1.5 metric threaded mount; 7/8" (22mm) wrench size
• Standard replacement grade

Engineered to meet original equipment specifications, the NTK 25146 supports OBDII diagnostic systems and helps detect issues with fuel delivery or catalytic converter efficiency before they become costly problems. Fits select 2003 Saab models. California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov.