Denso Upstream O2 Oxygen Sensor for GMC Syclone 4.3L V6 1991 OBDII Direct tg

The DENSO Oxygen Sensor, also known as an O2 sensor, showcases superior engineering for optimal performance. The oxygen sensor, located either upstream or downstream of the catalytic converter, is designed to monitor the air-fuel mixture under idle, moderate acceleration, and cruise conditions. Symptoms of a faulty or bad oxygen sensor include bad gas mileage, rough idle, reduced drivability, and an illuminated check-engine light. If you experience similar problems, you may need an oxygen sensor replacement. Rely on DENSO and their decades of engineering expertise to provide you with a high-quality component.

• MAXIMIZE ENGINE PERFORMANCE AND FUEL EFFICIENCY: the superior design of the oxygen sensor maximizes engine performance while reducing fuel consumption and harmful emissions
• ENSURE SMOG TEST COMPLIANCE: the DENSO Oxygen sensors are designed to adhere to OE standards within incredibly close tolerances
• SELECT A LONG-LASTING PART: the stainless steel housing is corrosion resistant, and the double protection cover protects the ceramic element against silicone and lead poisoning
• TRUST IN TROUBLE-FREE PERFORMANCE: the porous PTFE filter allows atmospheric oxygen to enter the sensor without permitting water or engine contaminants to seep into the casing
• CHOOSE A PRECISION-MADE PART: due to the sensitive and critical nature of the oxygen sensor, DENSO uses an aluminum-oxide trap layer to prevent damage to the platinum electrode

Year Range	Make	Model	Notes
1991	GMC	Syclone	4.3L V6;Upstream;O.E. Quality Universal Replacement Sensor

• To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim, and Engine in the eBay 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.

• If you have any questions, you may reach us via our eBay Contact Form.
• One of our outstanding customer service representatives from our US-based service centers will respond to your questions or feedback.

• 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.
• Once the tracking number is generated, please allow 24-48 hours for tracking movement to appear.
• 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 eBay tab for more details on shipping rates and delivery times.
• Sorry, no local pickups available.
• We participate in the eBay global shipping program. Please see the Shipping and payments eBay tab for details on the countries we ship to outside of the U.S.

• 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 eBay feedback. Please work with us by contacting us here if you have a problem before leaving negative feedback.

• If you would like to return your new, unopened, and uninstalled part:


1. From within My eBay, click Purchases.
2. Find the item you ordered.
3. Below the Leave Feedback button, click [More Actions] > [Return This Item].
4. Select a reason. The most common reason is Doesn't Fit.
5. Add details like I tried to install this part, and it didn't fit.
6. 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.

Sixity Auto Direct helps DIY mechanics and everyday drivers find their exact OEM auto part from our extensive collection of 2 million OEM-quality automotive part listings. We feature parts manufactured by hundreds of top global brands, all at affordable prices delivered to your door.

Our goal is to provide you with the best possible shopping experience through unsurpassed value, convenience, and selection. We are a U.S.-based company with a U.S. Customer Service Center ready to help with your questions. Plus all orders are processed within one-business day for fast shipping. Give us a try today - and thanks for shopping with us!

• 1-Day Order Processing
• US-Based Customer Service Team
• Always Genuine OEM-Replacement Parts from the Best Brands
• All Parts Ship from the United States
• Over 30,000 eBay Feedback and A+ Rated by the BBB