Spectra OS6201 Premium Heated Oxygen Sensor Thimble Type - 4-Wire

The Spectra Premium OS6201 is a direct-fit, heated replacement oxygen sensor (O2 sensor) engineered to restore proper exhaust gas monitoring and fuel management to your vehicle. Featuring a thimble-type sensing element, a 4-terminal rectangular female connector, and an overall wire length of 36 inches, this sensor installs with an M18x1.5 thread using a standard 7/8-inch wrench.

Key Features:

• Heated sensor design for faster warm-up and accurate readings across a wide range of operating conditions
• Thimble-type sensing element built with a robust manufacturing process to ensure consistent performance and specification compliance
• 4-wire, rectangular female connector — an exact electrical match to the vehicle's mating harness for a plug-and-play installation
• Waterproof connector resistant to car wash spray, puddle splash, dust, and other environmental exposure
• Anti-seize coating applied to threads from the factory; includes a protective transport cap to prevent contamination before installation
• Spectra part number engraved directly on the sensor body for easy identification; trilingual branded packaging included
• Manufactured under ISO 9001 and TS16949 quality management standards covering raw materials, in-process controls, final inspection, and shipment
• 100% performance and quality tested — all accessories required for installation are included
• Completely new unit — no core charge required

The oxygen sensor plays a critical role in engine management by detecting oxygen concentration in the exhaust stream and communicating that data back to the ECU, enabling the onboard computer to optimize fuel delivery and efficiency. A failing O2 sensor can reduce fuel economy, cause rough idle, and disrupt ignition timing. The Spectra Premium OS6201 meets or exceeds OE performance specifications, making it a reliable direct replacement.