Keep your engine computer informed about the exhaust leaving the catalytic converter with the DENSO Auto Parts Oxygen Sensor 234-4256, a heated, 4-wire, direct-fit sensor cataloged for the downstream and downstream right positions. It fits many vehicles, among them the 2008-2013 Chevrolet Silverado 1500 4.8L / 5.3L / 6.0L / 6.2L, 2008-2013 GMC Sierra 1500 4.8L / 5.3L / 6.0L / 6.2L and 2008-2014 Chevrolet Tahoe 4.8L / 5.3L / 6.0L / 6.2L. Across the listed applications it covers V8-4.8L, V8-5.3L, V8-6.0L, V8-6.2L and V8-7.0L engines. See the Buyer's Guide tab for the full list.
- Protective housing: a laser-welded stainless housing designed to resist corrosion, paired with a PTFE filter that blocks contaminants under harsh engine conditions.
- Dual-layer protection: shields the ceramic element to help maintain proper conditions for fast, reliable response times.
- Aluminum oxide trap layer: DENSO's exclusive layer is designed to protect the ceramic element from silicone and lead poisoning.
- Built to OE standards: manufactured and tested to strict OE standards, with each component precision-built for an exact replacement fit.
A downstream oxygen sensor reads the oxygen content of the exhaust after the catalytic converter, so the engine computer can monitor how the converter is working. Signs this part may need replacing include a check engine light with oxygen-sensor or catalyst-efficiency codes. Diagnose the cause first, because those codes can have other sources.
Specifications: narrow-band, heated sensor; specific fit; 4 wires; female connector; threaded mounting; 0.708 in thread diameter; 14.80 in wiring harness length. The listed applications use one or two per vehicle, depending on the application. Country of origin: United States.
This part cross-references / interchanges with the following part numbers:
213-4229, 213-4230, 15698, ES20094, ES20320, 12609457, 12611165, 92457789, 21066, 250-24736, 350-34494
