Bosch 13450 Oxygen Sensor - Downstream or Upstream

Bosch Oxygen Sensor 13450 Overview

Bosch 13450 is a specific-fit, narrow-band heated oxygen sensor built for precise air-fuel-ratio feedback to the ECU. It is used on select Chevrolet, Pontiac, Oldsmobile, and Buick applications, including downstream and upstream locations across 1995-2004 model years.

Key Features

• Specific-fit Bosch Engineered Oxygen Sensor for direct application matching
• Narrow-band heated O2 sensor for closed-loop fuel control
• 4-wire design with square connector, pin terminals, and male connector / female terminal layout
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included with a 70.1 in harness length
• Metal housing and steel finish for high-temperature underbody service
• Overall length: 73.8 in; sealing surface to connector end: 72.6 in

Product Details

Bosch Engineered Oxygen Sensor 13450 uses a switching-type narrow-band design to report exhaust oxygen content to the engine control unit. Bosch developed this sensor family from its long-running OE oxygen sensor engineering, including later planar narrowband designs that improve warm-up response and closed-loop operation. For drivers searching for a Bosch 13450 oxygen sensor for Chevrolet Cavalier, Pontiac Sunfire, or Chevrolet Malibu downstream service, this part provides the sensor format and connector style required by the listed applications.

This part cross-references GM OE numbers 12569553 and 19178929 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the ECU
• Rough idle or unstable combustion control caused by aging sensor response
• Failed emissions inspection tied to O2 sensor faults
• Slow closed-loop transition after startup on heated sensor applications

Installation Notes

Verify connector shape, wire count, thread size, and sensor position before installation. This Bosch 13450 oxygen sensor is a threaded, heated narrow-band unit with a specific-fit harness, so the vehicle-side connector and exhaust bung must match the listed application. Use proper oxygen sensor service tools and inspect the exhaust threads and wiring routing during replacement.

Quality Assurance

Bosch backs this oxygen sensor line with more than five decades of OE development and aftermarket supply experience. The design uses ceramic sensing elements, controlled heating, and heat-resistant materials to maintain stable operation under thermal and vibration load.

Compatible Vehicles

• Fits 1999-2004 Oldsmobile Alero, Downstream
• Fits 1999-2004 Pontiac Grand Am, Downstream
• Fits 1997-2003 Chevrolet Corvette, Downstream
• Fits 1997-2003 Chevrolet Malibu, Downstream
• Fits 2002 Chevrolet Cavalier, Upstream
• Fits 1995-2002 Pontiac Sunfire, Downstream
• Fits 1998-2001 Chevrolet Cavalier, Downstream
• Fits 1998-2001 Pontiac Sunfire, Downstream
• Fits 1995-2001 Chevrolet Cavalier, Downstream
• Fits 1999 Chevrolet Malibu, Downstream
• Fits 1997-1999 Oldsmobile Cutlass, Downstream
• Fits 1999 Pontiac Grand Am, Downstream
• Fits 1996-1998 Buick Skylark, Downstream
• Fits 1996-1998 Oldsmobile Achieva, Downstream
• Fits 1996-1998 Pontiac Grand Am, Downstream
• Fits 1996 Chevrolet Corsica, Downstream