Bosch 13680 Oxygen Sensor - Upstream

Bosch Wideband O2 Sensor for Honda and Acura

Bosch Validated Oxygen Sensor 13680 is a specific-fit wideband air-fuel ratio sensor built for precise upstream monitoring. It delivers fast, continuous feedback to the ECU, helping maintain accurate mixture control in Honda Civic, Acura RSX, and Honda CR-V applications.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement
• Heated design for faster light-off and stable operation
• Specific-fit replacement with included wiring harness
• 4-wire configuration with blade terminals and rectangular male connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing with robust ceramic sensor construction
• Overall length: 15.0 in; harness length: 11.5 in

Detailed Description

Bosch 13680 is part of the Bosch Validated Oxygen Sensor line, a product line focused on OE-style replacement coverage and application-specific fitment. This wideband sensor measures the air-fuel ratio across the full lambda range, giving the engine control unit detailed input for fuel delivery and emissions management. Bosch pioneered the planar pump-cell wideband design used in modern engine management, and this sensor reflects that OE development background in a standard replacement format.

Fits 2001-2005 Honda Civic, upstream. Fits 2003-2005 Honda Civic, upstream, with California Emission System. Fits 2002-2004 Acura RSX, upstream. Fits 2002-2004 Honda CR-V, upstream. Bosch 13680 is a direct-fit option for drivers searching for an upstream wideband oxygen sensor for Honda Civic, Acura RSX, or Honda CR-V models.

This part cross-references Honda/Acura OE numbers such as 36531PLE305 and 36531PLM306 for the same application.

What It Helps Address

• Incorrect air-fuel ratio readings from a worn upstream sensor
• Check engine lights related to oxygen sensor performance
• Rough idle or hesitation caused by inaccurate mixture feedback
• Reduced fuel economy from poor fuel control
• Higher emissions from delayed or unstable sensor response

Installation Notes and Tips

Install this sensor in the upstream position only for the listed applications. Verify the connector shape, 4-wire layout, and 18 mm threaded mounting before installation. Because this is a wideband sensor, handle the sensing tip carefully and avoid contaminating it with oil, coolant, or anti-seize on the sensing element. Confirm the vehicle’s emission package and model year match the listed fitment before ordering.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience and aftermarket coverage built around OE-proven design principles. The sensor uses fast warm-up control, durable construction, and application-specific fitment to support reliable operation in demanding thermal conditions.