Bosch 13736 Premium OE Oxygen Sensor 4-Wire Heated Upstream

The Bosch 13736 is a premium original equipment-type heated oxygen sensor designed as a direct-fit upstream (pre-catalytic converter) replacement. Built to OE specifications by the company that invented the automotive oxygen sensor, this 4-wire heated O2 sensor restores accurate air-fuel mixture monitoring to protect engine performance, fuel economy, and emissions compliance.

Key Features:

• Dual-Layer Contamination Protection: Patented catalytically activated fine particle filter prevents exhaust contaminants from reaching the sensing element, while a second filter layer doubles protection for extended service life.
• Premium Ceramic Sensing Element: Constructed with advanced ceramic technology incorporating Zirconium and Yttrium for superior resistance to mechanical and thermal shock.
• Fast-Acting Heater Element: Integrated heating element brings the sensor to operating temperature within seconds, enabling accurate readings shortly after cold starts.
• Exclusive Double Laser-Welded Stainless Steel Body: Totally submersible and sealed tight against exhaust contamination for maximum durability and long sensor life.
• True Direct-Fit Installation: OE-style connector and harness with threads pre-coated in anti-seize compound — no cutting, splicing, or adapters required.
• OE-Style Silicone Boots: Snug-fitting boots ensure proper fit, function, and a factory appearance.
• Factory Tested: Every sensor undergoes 100% fully functional quality testing to meet Bosch's rigorous performance standards.
• Catalytic Converter Protection: Accurate oxygen readings help prevent the rich-running conditions that lead to premature catalytic converter failure.

Specifications:

• Wire Configuration: 4-Wire
• Sensor Type: Heated (Thimble Type)
• Wire Length: 24 inches
• Mounting Location: Upstream / Before Catalytic Converter
• Product Fit: OE Replacement
• Quantity: Sold individually
• OEM Cross Reference: 021906265AH / 0258003736

Bosch is the world's leading original equipment supplier of oxygen sensors and the top choice of automakers worldwide. The Bosch 13736 delivers the same quality and precision as the factory sensor it replaces, helping your engine maintain the ideal air-fuel ratio for optimal combustion efficiency and reduced emissions.