Bosch 13139 Oxygen Sensor Heated Sensor - 4-Wire O2

The Bosch 13139 Oxygen Sensor delivers precise air-fuel mixture monitoring for optimal engine performance and emissions control. This heated 4-wire oxygen sensor is designed for post-catalytic converter installation and features advanced filtration technology to ensure long-lasting, accurate operation.

Key Features:

• Premium ceramic technology with Zirconium or Titania and Yttrium elements provides superior protection against mechanical and thermal shock
• Patented dual-filter system includes a catalytically activated fine particle filter that prevents exhaust gas contamination and extends sensor life
• 4-wire heated design ensures faster warm-up and more accurate readings in all driving conditions
• 13.9-inch wire length with OE-style silicone boots for proper fit and appearance
• Direct plug-in installation requires no cutting or splicing
• Delivers precise voltage signals to the engine control computer for optimal fuel economy and reduced emissions
• Helps prevent premature catalytic converter failure by maintaining proper air-fuel ratios

This OE replacement oxygen sensor is rigorously tested to meet or exceed original equipment specifications. Sold individually.

Specifications: 4-wire heated sensor | Post-catalytic converter location | 13.9-inch wire length | Not for California emission systems