BDFHYK Oxygen Sensor Upstream Downstream O2, Compatible with Dodge Neon Caravan Charger, Compatible with Chrysler Sebring 300, 18126, 56029050AA Replacement 1PCS

This BDFHYK 18126 O2 sensor is an OE-style aftermarket replacement for listed Dodge Neon, Caravan, Charger and Chrysler Sebring, 300 applications that cross-reference 56029050AA or 68090640AB. The exact upstream or downstream location is application-dependent. Before ordering, match the original sensor number and confirm year, engine, emissions configuration, connector, wiring, lead length and exhaust position. A Check Engine Light or stored diagnostic code alone does not confirm oxygen sensor failure.

18126 O2 Sensor Fitment for Dodge and Chrysler Applications

• Dodge Neon
• Dodge Caravan
• Dodge Charger
• Chrysler Sebring
• Chrysler 300

Fitment is application-specific. Confirm the exact year, engine and emissions calibration before installation rather than selecting by model name alone.

18126 O2 Sensor Interchange References

Replacement references include 18126, 56029050AA and 68090640AB. Confirm the interchange number together with the connector, harness and original exhaust location.

18126 Upstream and Downstream Position Check

This sensor is listed for different upstream or downstream positions depending on application. Do not assign a universal Bank 1 Sensor 1, Bank 1 Sensor 2, Bank 2 Sensor 1 or Bank 2 Sensor 2 position without vehicle-specific service information.

18126 O2 Sensor Diagnosis Before Replacement

Inspect the connector, wiring, heater circuit, related fuse, power and ground, exhaust leaks, intake or vacuum leaks, fuel pressure, injector operation, misfires and catalyst condition before replacing parts. Fuel-trim and catalyst-efficiency codes require system diagnosis rather than automatic sensor replacement.

18126 O2 Sensor Installation Notes

• Allow the exhaust system to cool before service.
• Use an O2 sensor socket or suitable wrench.
• Compare the connector, lead length and reference number with the removed sensor.
• Inspect bung threads and start the sensor by hand.
• Use anti-seize only when permitted by the sensor instructions.
• Tighten to the applicable vehicle service specification and route the harness away from heat and moving parts.

18126 O2 Sensor Package Contents

• 1 × BDFHYK oxygen sensor

Important: This is an OE-style aftermarket replacement, not a factory-branded part.