DENSO 234-4936 Heated Oxygen Sensor Direct Fit Wire - 4-Wire 31.5

The DENSO 234-4936 is a direct-fit, heated oxygen sensor (O2 sensor) engineered to OE standards for reliable exhaust monitoring and emissions performance. Featuring a 4-wire design with a 31.5-inch wire length, this sensor installs without cutting or splicing for a clean, factory-style replacement.

Key Features:

• Direct Fit Design — Plug-and-play replacement engineered to match original equipment specifications exactly
• Heated Element — Built-in heater circuit brings the sensor to operating temperature faster, improving cold-start emissions performance and fuel efficiency
• 4-Wire Construction — Two heater wires and two signal wires with a 31.5-inch pigtail harness for secure, no-splice installation
• Aluminum Oxide Trap Layer — Exclusive protective coating shields the ceramic sensing element from silicone and lead contamination for extended sensor life
• Porous PTFE Filter — Allows atmospheric reference oxygen to enter the sensor while blocking moisture and engine contaminants
• Stainless Steel Housing — Corrosion-resistant construction built to withstand high exhaust temperatures and harsh underhood environments
• 100% Tested — Every sensor is verified for high-temperature signal output, air tightness, continuity, and heat resistance before leaving the factory

DENSO is an original equipment supplier to major automakers worldwide, and the First Time Fit® product line brings that same OE-level precision to the aftermarket. The 234-4936 oxygen sensor monitors exhaust gas oxygen content to help the engine management system optimize the air-fuel mixture, reducing harmful emissions and maximizing fuel economy.