Bosch 13870 Oxygen Sensor Heated Pre-Cat Sensor - 4-Wire O2

The Bosch 13870 Oxygen Sensor is engineered with premium ceramic technology to deliver precise air-fuel mixture readings to your vehicle's engine control computer. This heated 4-wire oxygen sensor is designed for pre-catalytic converter installation, ensuring optimal emissions control and engine performance.

Advanced Protection Technology:

• Patented catalytically activated fine particle filter prevents contamination and ensures extended sensor life
• Dual-filter system provides double protection against exhaust gas contamination
• Premium ceramic construction incorporates Zirconium or Titania and Yttrium for superior resistance to mechanical and thermal shock
• Heated element enables faster sensor activation and accurate readings in all conditions

Key Specifications:

• 4-wire heated design with 9.5-inch wire length
• OE-style silicone boots ensure proper fit, function, and appearance
• Direct plug-in installation—no cutting or splicing required
• Mounting location: Before catalytic converter

Rigorously tested to meet OE performance standards, the Bosch 13870 helps prevent premature catalytic converter failure while optimizing fuel efficiency. Each sensor is sold individually and provides reliable, precise voltage output for accurate emissions control.