Bosch 13444 Oxygen Sensor

Bosch Oxygen Sensor for OE-Style Emissions Control

Bosch Engineered Oxygen Sensor 13444 is a narrow-band heated O2 sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management across changing engine loads, temperatures, and driving conditions.

Compatible With select Buick, Chevrolet, Cadillac, Oldsmobile, Pontiac, GMC, and Isuzu applications, this Bosch Engineered Oxygen Sensor line draws on Bosch OE development dating back to the original oxygen sensor designs introduced in 1976. Part number 13444 uses a threaded mount, 4-wire harness, and square connector layout for direct replacement service.

Key Features

• Narrow-band heated oxygen sensor for closed-loop fuel control
• Specific-fit design with 4-wire harness and included wiring harness
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Square connector, male connector gender, female terminal gender
• Standard replacement grade for OE-style service
• Metal housing with high-temperature-resistant construction
• Part number 13444 for catalog and service matching

Product Details

Bosch uses advanced ceramic sensing elements, optimized heater control, and durable materials to maintain consistent signal output under heat and vibration. This narrow-band heated oxygen sensor is intended for downstream and selected upstream positions across a wide range of GM and Isuzu platforms, including Buick LeSabre, Chevrolet Impala, Pontiac Grand Prix, Cadillac DeVille, and Chevrolet S10 applications. Bosch Engineered Oxygen Sensor 13444 is built to deliver accurate lambda feedback so the engine control module can adjust fueling with confidence.

This part cross-references GM OE numbers 19178747 and 19178922 for the same application.

What This Sensor Helps Address

• Check engine light caused by oxygen sensor signal faults
• Rich or lean fuel trim conditions from inaccurate exhaust feedback
• Slow closed-loop response after start-up or during warm operation
• Emissions test failures related to sensor performance
• Rough idle or drivability issues tied to air-fuel control

Installation Notes and Tips

Verify the sensor position before ordering, since this part is listed for downstream, upstream left, upstream right, downstream left, and downstream right applications depending on vehicle. Confirm connector shape, wire count, and thread size against the original sensor before installation. For best results, inspect the harness routing and exhaust threads, and apply proper torque during installation to avoid damage to the sensor or bung.

Fits 1996-2004 Buick Century, downstream. Fits 2002-2004 Buick Rendezvous, downstream. Fits 2000-2004 Chevrolet Impala, downstream. Fits 1996-2004 Chevrolet Monte Carlo, downstream. Fits 1996-2004 Oldsmobile Silhouette, downstream. Fits 2001-2004 Pontiac Aztek, downstream. Fits 1999-2004 Pontiac Montana, downstream. Fits 1996-2003 Buick LeSabre, downstream. Fits 1996-2003 Buick Park Avenue, downstream. Fits 1996-2003 Buick Regal, downstream. Fits 1997-2003 Chevrolet S10, downstream. Fits 1997-2003 GMC Sonoma, downstream. Fits 1996-2003 Pontiac Bonneville, downstream. Fits 1996-2003 Pontiac Grand Prix, downstream. Fits 1998-2002 Chevrolet Camaro, upstream left. Fits 1998-2002 Chevrolet Camaro, upstream right. Fits 1996-2002 Chevrolet Camaro, downstream. Fits 1998-2002 Pontiac Firebird, upstream left. Fits 1998-2002 Pontiac Firebird, upstream right. Fits 1996-2002 Pontiac Firebird, downstream. Fits 1996-2001 Chevrolet Lumina, downstream. Fits 1997-2000 Isuzu Hombre, downstream. Fits 1996-1999 Buick Riviera, downstream. Fits 1994-1999 Cadillac DeVille, downstream. Fits 1996-1999 Cadillac Eldorado, downstream. Fits 1996-1999 Cadillac Seville, downstream. Fits 1998-1999 Chevrolet Camaro, downstream left. Fits 1998-1999 Chevrolet Camaro, downstream right. Fits 1996-1999 Oldsmobile 88, downstream. Fits 1996-1999 Oldsmobile Aurora, downstream. Fits 1998-1999 Oldsmobile Intrigue, downstream. Fits 1996-1999 Oldsmobile LSS, downstream. Fits 1998-1999 Pontiac Firebird, downstream left. Fits 1998-1999 Pontiac Firebird, downstream right. Fits 1996-1999 Pontiac Trans Sport, downstream. Fits 1997-1998 Oldsmobile Regency, downstream. Fits 1996-1997 Oldsmobile Cutlass Supreme, downstream. Fits 1996 Chevrolet Lumina APV, downstream. Fits 1996 Oldsmobile 98, downstream. Fits 1996 Oldsmobile Cutlass Ciera, downstream. Fits 1990-1993 Chevrolet S10, downstream. Fits 1990 GMC S15, downstream.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience and a long history of supplying sensors to vehicle manufacturers. The Bosch Engineered Oxygen Sensor line is built to OE-proven standards for accurate signal control, durability, and consistent operation in demanding exhaust environments.