Bosch 18273 Premium OE Fitment Oxygen Sensor

The Bosch 18273 is a premium oxygen sensor engineered to deliver precise air-fuel ratio monitoring for optimal engine performance and emissions control. As a direct-fit replacement sensor, it features OE-quality construction and comes ready to install with the factory connector for hassle-free installation.

Key Features:

• 4-wire heated oxygen sensor with narrow band technology
• M18 x 1.5 thread size with 22mm hex for easy installation
• Overall length of 14-9/16 inches
• Stainless steel body is fully submersible and sealed against exhaust emissions
• Fast-acting integrated heater reaches operating temperature in seconds
• Oval blade-type connector with male terminals for direct OE fitment
• Threads pre-coated with anti-seize compound
• 100% factory tested for full functionality

OE Replacement Numbers: 12659516, 12666612

Bosch invented the automotive oxygen sensor in the late 1960s and continues to lead the industry in sensor technology and innovation. Every Bosch oxygen sensor benefits from decades of original equipment manufacturing experience, ensuring reliable performance and long service life. Replacing a worn oxygen sensor helps restore fuel economy, improve engine performance, and reduce harmful emissions.