Bosch Oxygen Sensor P/N:16643
Keep accurate air-fuel-ratio feedback flowing to the engine computer with the Bosch SmartLink™ Universal Oxygen (O2) Sensor 15732, a narrow-band, heated 4-wire sensor with a universal fit that adapts across a wide range of applications — including the 1994-2004 Buick Century, 1994-1999 Cadillac DeVille, 1995-2001 Chevrolet Blazer, 1996-1999 Chevrolet C1500, and many more (see the Buyer's Guide tab for the full list). Because it is a universal design, it can be adapted to upstream, downstream, and left/right sensor positions depending on the application. It threads into the port with an M18 - 1.5 thread and a 22 mm hex.
Solder-free installation: high-temperature Posi-Lock® connectors form secure, weather-resistant electrical connections without soldering, crimping, or specialty tools.
OE-trusted sensing: uses the same zirconia ceramic element and heater design found in Bosch OE applications for dependable lambda-control feedback.
Reusable connection: the Posi-Lock® connectors can be reopened and reused to correct wiring or adjust routing without cutting connectors.
Inclusive kit: ships with long-lead wiring, reusable Posi-Lock® connectors, and a Bosch sensor with pre-applied conductive anti-seize.
A wiring harness is included; a mounting bracket is not. Made in the United States. Backed by a Bosch 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.
What is this oxygen sensor and what does it do?
It is a Bosch SmartLink™ narrow-band, heated 4-wire O2 sensor that measures oxygen in the exhaust and sends air-fuel-ratio feedback to the engine computer for fuel-mixture control.
Will it fit my vehicle?
It is a universal-fit sensor covering many 1990s-2000s GM and other applications. Check the Buyer's Guide tab and match your engine and sensor position before ordering.
Do I need to solder the connections?
No. The high-temperature Posi-Lock® connectors create secure, weather-resistant connections without soldering, crimping, or specialty tools, and can be reopened and reused if adjustments are needed.
Does it include a wiring harness or mounting bracket?
A wiring harness with long-lead wiring is included, along with reusable Posi-Lock® connectors and pre-applied conductive anti-seize. A mounting bracket is not included.
How many sensors does my vehicle use?
Quantity varies by engine and application; some listed applications use two. Confirm the correct quantity for your vehicle in the Buyer's Guide. Package quantity is one.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.