Upstream Oxygen Sensor, Zirconia Heated, 12.99-Inch Harness

The Denso 234-4123 is an upstream oxygen sensor engineered for exact replacement and optimal performance in your vehicle's emission control system. It features a Zirconia sensor type and is heated for quicker response times critical to fuel efficiency. The durable construction includes a rugged stainless steel housing, a porous PTFE filter to prevent contamination, and an aluminum oxide trap layer to protect the ceramic element from silicone and lead poisoning. This OE-identical sensor comes with a 12.99-inch wiring harness, a threaded mounting type, and an OE-type connector, ensuring a first-time fit. It is specifically designed to meet the increasing demands of today's engines and is 100 percent checked for high temperature signal output, air tightness, continuity, and heat resistance.