DENSO 234-4656 OE Oxygen Sensor Direct Fit 4-Wire Heated

The DENSO 234-4656 is a premium OE-quality oxygen sensor designed to monitor exhaust gas oxygen content and ensure optimal air/fuel mixture control. This sensor is manufactured and tested to the strictest OE standards for unparalleled performance, with each component precision-built for exact replacement and a first-time fit.

Advanced Protection Technology:

• Aluminum-oxide trap layer protects the ceramic from silicone and lead poisoning, preventing damage to the platinum electrode
• Double protection cover maintains proper unit temperature for quicker response times and protects the ceramic element from contamination
• Stainless steel housing resists corrosion and contamination with a rugged, watertight body
• Porous PTFE filter allows atmospheric oxygen to enter the sensor without permitting water or engine contaminants to seep into the casing

Technical Specifications:

• 4-wire design with direct-fit heated element
• Wire length: 29.53 inches
• Male connector with threaded mounting
• Narrowband sensor designed for downstream/rear position (located after catalytic converter)

This DENSO oxygen sensor meets or exceeds OE specifications, maximizing engine performance and fuel efficiency while reducing harmful emissions. OEM interchange numbers include: MN158916, MN163492, MR507387, MR578113, ensuring proper compatibility with factory specifications.