Denso 234-4021 Oxygen Sensor

Buyer fitment guide only intended as reference. Please use catalogue search by vehicle to ensure proper fitment.

• Delphi ES20048
• Chrysler 4686622
• Bosch 13149
• ACDelco 2131376
• Delphi ES20045
• Chrysler 4727225AB
• Chrysler 4727225
• Delphi ES20321
• Chrysler 4686621
• NTK 23002
• NTK 23105
• Walker Products 25024081
• Borg Warner OS197
• Walker Products 25024942
• Walker Products 35034439
• Walker Products 35034342
• Standard Ignition SG1822
• ACDelco 2131376
• Walker Products 25024081
• Walker Products 25024942
• NAPA Mileage Plus 2344021

• DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
• Aluminum-Oxide Trap Layer €“ Keeps silicone and lead outside the ceramic elient through DENSO€™s exclusive design, preventing damage to the platinum electrode.
• Double Protection Cover €“ Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
• Porous PTFE Filter €“ Allows atmospheric oxygen to enter the sensor without permitting water or engine contaminants to seep into the casing.
• Robotic Laser Weld
• Stainless Steel Housing €“ Resists corrosion and contamination with a rugged, watertight body.