O2 Oxygen Sensor Upstream Downstream for Ram 1500 (2011-2023) 3.6L 3.7L 4.7L 5.7L

Direct-Fit Upstream & Downstream O2 Sensor Kit for 2011-2023 Ram 1500 (DS)

What it Does: This 4-piece oxygen sensor kit restores closed-loop air-fuel ratio feedback and catalytic converter efficiency monitoring across upstream and downstream exhaust banks on the 2011-2023 Ram 1500 (DS).

The Stock Ram 1500 Sensor Degradation

Factory zirconia sensing elements on the DS chassis suffer thermal shock, carbon fouling, and internal heater circuit burnout over extended towing and exhaust heat cycles. Whether equipped with the ERB 3.6L, EKG 3.7L, EVA 4.7L, or EZH 5.7L engine, a sluggish upstream sensor skews PCM fuel trim calculations. Silicone and oil-ash deposits coat the porous platinum electrodes, delaying millivolt switching response and triggering persistent fuel trim and heater fault codes.

Common Symptoms of a Failing OEM O2 Sensor

• Check Engine Light / DTCs: Triggers heater circuit and slow-response codes like P0131, P0135, P0151, and P0155, or downstream catalyst codes P0420/P0430.
• Rich/Lean Mixture Oscillations: Delayed voltage transitions cause rough idle, exhaust fuel odor, and erratic short-term fuel trims.
• Drivability & Emissions Failure: Forces open-loop limp fueling, increasing fuel consumption and causing OBD-II readiness monitor failures.

The Direct-Fit Stainless Oxygen Sensor Solution

This matched 4-piece oxygen sensor kit replaces Bank 1 and Bank 2 upstream and downstream units simultaneously on DS Ram 1500 V6 and V8 exhausts. Each sensor features a fast-light-off internal heater, double laser-welded stainless steel housing, and calibrated zirconia ceramic element for crisp voltage transitions. Factory-style weather-pack connectors and pre-threaded bungs ensure plug-and-play electrical output without harness splicing or exhaust modifications.

What's Included

• 2x Upstream Oxygen Sensors
• 2x Downstream Oxygen Sensors

Technical Specifications

Compatibility

• 2013-2018 Ram 1500 3.6L (Naturally Aspirated)
• 2019-2023 Ram 1500 Classic 3.6L (Naturally Aspirated)
• 2011-2013 Ram 1500 3.7L (Naturally Aspirated)
• 2011-2013 Ram 1500 4.7L (Naturally Aspirated)
• 2019-2023 Ram 1500 Classic 5.7L (Naturally Aspirated)

Frequently Asked Questions & Fitment Warnings

Does this fit the DS 1500?

Yes. This kit fits the listed naturally aspirated DS 2011-2023 Ram 1500 models with ERB 3.6L, EKG 3.7L, EVA 4.7L, and EZH 5.7L engines. Excludes 2011-2018 5.7L models, 2002-2010 Dodge Ram 1500 models, and non-Classic DT body trucks.

Will this clear O2 heater and P0420/P0430 codes?

Yes, if caused by sensor failure. Replacing all four sensors resolves P0135/P0155 heater faults and false P0420/P0430 catalyst efficiency triggers from lazy downstream sensors, though a physically melted catalytic substrate still requires converter replacement.

Are connectors and thread prep included for installation?

Yes. All four sensors ship with OEM-style plug-in connectors for direct harness mating; chase exhaust bung threads before torquing to factory spec and clear PCM adaptive memory after installation.

The Ram Heavy-Duty Standard

Engineered to handle sustained towing EGTs and moisture exposure without signal drift, this matched sensor set restores factory fuel trim accuracy across both exhaust banks. Keep your V6 or V8 Ram 1500 operating cleanly in closed-loop control under heavy payload demands.