This Spectra Premium Oxygen Sensor fits your 2003 2002 2001 2000 1999 1998 1997 1996 Buick Regal (Downstream) and is perfect for a tune up or performance upgrade. Search Our store Contact Us Spectra Premium Downstream Oxygen Sensor for 1996-2003 Buick Regal - Exhaust as Status: In Stock Condition: New REDUCE COLD START EMISSIONS: This Oxygen Sensor features a protective coating to prevent contamination and has one of the fastest activation times in the industry. The sensing element with integrated heater reaches optimum operating temperature in a matter of seconds for quicker closed-loop activation and reduced cold start emissionsRESTORE YOUR EMISSION CONTROL SYSTEM: The Emission Control system in your vehicle is an essential part of a well-timed machine. If anything in this system breaks or starts to malfunction, your engine will start to exhibit a poor fuel mixture and could even fail a smog test. With this Emission Control part, restore your vehicle to run as good as newRELY ON QUALITY AUTO PARTS: Spectra Premium manufactures exceptional aftermarket cooling system, fuel delivery, engine management, and climate control parts, including the first and only CAPA-Certified radiators. Their products are designed for drop-in fit and easy installationTRUST IN SPECTRA PREMIUM: Spectra Premium is the largest North American aftermarket radiator manufacturer and the world leader in aftermarket steel fuel tank production. They use the highest grade material in production, and all products are performance, endurance, and leak tested. Their manufacturing meets or exceeds OE specifications for fit, form, and function Confirm Your Vehicle Compatibility Year To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table. Many of the parts we sell at Sixity Auto Direct only work with specific vehicles. Please double-check the accuracy of your order before purchasing. Check that the reference number, size, and placement are correct. Contact Sixity Auto Direct If you have any questions, you may reach us via our Contact Form. One of our outstanding customer service representatives from our US-based service centers will respond to your questions or response. Shipping Your order will be processed within one business day. We strive to ship every order promptly. We will email you a tracking number when your order ships. Items will ship via major shipping carriers including USPS, FedEx, and UPS. Some items offer faster shipping for a small fee. Please see the Shipping and payments tab for more details on shipping rates and delivery times. Sorry, no local pickups available. We participate in the global shipping program. Please see the Shipping and payments tab for details on the countries we ship to outside of the U.S. Customer Satisfaction Sixity Auto Direct stands for value, selection, and quality. Our goal is to provide a 5-star shopping experience. We give all our customers positive response. Please work with us by contacting us here if you have a problem before leaving negative response. Returns If you would like to return your new, unopened, and uninstalled part: Go to your My page. Click [Buy] > [Purchase History] on the left sidebar. Find the item you ordered. Below the Leave response button, click [More Actions] > [Return This Item]. Select a reason. The most common reason is Doesn't Fit. Add details like I tried to install this part, and it didn't fit. Click [Request a Return]. Returned parts will be inspected, and a refund given within 5 business days if the part is new, unopened, and uninstalled. Original shipping costs and a restocking fee may be deducted from your refund. If the item has been opened, installed, or used, we are unable to accept a return due to safety concerns. WARNING: This product may contain chemicals 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 WARNING: This product may contain chemicals 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 © 2021 Sixity, Inc. All Rights Reserved.