- Double Protection Cover— Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
- Aluminum-Oxide Trap Layer— Keeps silicone and lead outside the ceramic element through DENSO's exclusive design, preventing damage to the platinum electrode.
- Stainless Steel Housing— Resists corrosion and contamination with a rugged, watertight body.
- Porous PTFE Filter— Allows atmospheric oxygen to enter the sensor without permitting water or engine contaminants to seep into the casing.
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