Walker 250-241343 Oxygen Sensor - Upstream Left

Walker OE Base Oxygen Sensor for Jeep

Walker OE Base Sensor 250-241343 is a heated narrow-band oxygen sensor built for direct replacement in specific Jeep applications. It is engineered for the upstream left position and provides the ECU with the feedback needed to monitor air-fuel control and emissions performance.

Key Features

• Heated narrow-band oxygen sensor for faster operating response
• 4-wire design with 4 terminals for the specified vehicle application
• Oblong connector with male connector gender and female terminal gender
• M18 x 1.5 thread size for the listed fitment
• OE Base Sensor line focused on application-specific replacement fitment
• Fits 2021-2026 Jeep Wrangler, upstream left
• Fits 2022-2023 Jeep Grand Wagoneer, upstream left

Product Details

The Walker OE Base Sensor line is built as an OE-style replacement for vehicle-specific engine management needs. Part number 250-241343 is matched to the upstream left location on the Jeep Wrangler and Jeep Grand Wagoneer applications listed here, helping maintain the diagnostic feedback the ECU expects from the oxygen sensor circuit. Walker Products has long focused on engine management and fuel system components, and this sensor reflects that application-specific approach.

For shoppers searching for a 2021-2026 Jeep Wrangler upstream left oxygen sensor or a 2022-2023 Jeep Grand Wagoneer upstream left O2 sensor, 250-241343 is the listed replacement. This part cross-references no additional part numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate sensor readings
• Higher exhaust emissions from a failing upstream sensor
• Damaged sensor circuit concerns involving the sensor, wiring harness, or connector

Installation Notes

Confirm the upstream left position before ordering and verify connector shape, wire count, and thread size against the original part. Inspect the sensor, harness, and connector for physical damage before installation, since damage in these areas can shorten service life and affect ECU feedback. Use the vehicle’s service information for proper removal and installation procedures.

Quality Assurance

Walker Products manufactures engine management sensors as OE replacement parts for specific applications and operates as an ISO 9001/TS 16949 certified company. Part number 250-241343 is built to support the diagnostic requirements of the listed Jeep applications.