Walker 250-241265 Oxygen Sensor - Downstream Rear, Downstream Right or Upstream Right

Walker OE Base Oxygen Sensor for Jeep and Ram

Walker OE Base Sensor 250-241265 is a specific-fit, heated narrow-band oxygen sensor built for direct replacement in select Jeep Wrangler and Ram ProMaster applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring.

Key Features

• Heated narrow-band oxygen sensor for OE-style signal response
• Specific fit application for confirmed vehicle positions
• 4-wire design with oblong female connector
• M18 x 1.5 thread size and 22 mm wrench size
• Walker OE Base Sensor line for application-matched replacement parts

Application Details

This Walker oxygen sensor is built for select 2018-2026 Jeep Wrangler and 2022-2025 Ram ProMaster 1500, ProMaster 2500, and ProMaster 3500 models. Fitment includes Wrangler upstream right, ProMaster downstream right, and ProMaster downstream rear positions, depending on year and model. Part number 250-241265 is intended for direct replacement where the original sensor location and connector style match.

The OE Base Sensor line focuses on application-specific coverage, so the sensor, harness, and connector layout are matched to the listed vehicle position. For Jeep Wrangler and Ram ProMaster oxygen sensor replacement, this helps maintain the diagnostic feedback the ECU expects from the emissions system.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect air-fuel feedback
• Rough engine operation from inaccurate exhaust readings
• Elevated exhaust emissions from a failing sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes

Verify the vehicle year, model, and sensor position before ordering. Confirm the connector shape, 4-wire configuration, and M18 x 1.5 thread size against the original part. Inspect the wiring harness and connector for heat damage, corrosion, or physical wear before installation, since damaged related components can shorten sensor life.

Quality Assurance

Walker Products has produced engine management and oxygen/air-fuel sensors since 1946 and operates under ISO 9001/TS 16949 quality systems. Part number 250-241265 is manufactured as an OE replacement for the listed applications and is backed by Walker’s application-focused cataloging and manufacturing standards.