Bosch 13257 Oxygen Sensor Heated Universal - 4-Wire

The Bosch 13257 Oxygen Sensor is engineered with premium ceramic technology to deliver precise emissions monitoring and optimal engine performance. This heated 4-wire universal oxygen sensor is designed for post-catalytic converter installation and features advanced filtration technology to ensure extended service life.

Key Features:

• Premium ceramic construction incorporating Zirconium or Titania and Yttrium for superior protection against mechanical and thermal shock
• Patented catalytically activated fine particle filter prevents contamination and ensures precise voltage signal to the engine's emission control computer
• Dual-filter design provides double protection against exhaust gas contamination for extended sensor life
• 50-inch wire harness with direct plug-in connection—no cutting or splicing required
• OE-style silicone boots ensure proper fit, function, and appearance
• Heated sensor design for faster response time and improved cold-start performance
• Helps prevent premature catalytic converter failure by maintaining optimal air-fuel ratios

Specifications:

• Sensor Type: Heated 4-wire
• Wire Length: 50 inches
• Location: After catalytic converter (driver or passenger side)
• Product Fit: OE replacement
• Quantity: Sold individually

This Bosch oxygen sensor is rigorously tested to deliver reliable performance while helping improve fuel efficiency and reduce emissions. The universal design with extended wire length provides flexible installation options for a wide range of vehicle applications.