67% under what the other stores charge
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The Denso 234-4805 is a direct-fit oxygen sensor for the 2003–2004 Toyota 4Runner. It is an OE-style replacement built to the same standards Denso supplies to Toyota, with a factory-style connector and an aluminum oxide trap layer that shields the ceramic element from silicone and lead contamination. It suits 4Runner owners chasing a check-engine light, rough idle or failed emissions test who want a plug-and-play part rather than a universal splice-in sensor. Against generic universal sensors it costs more effort to fit and is less likely to need wiring work, which is why independent shops and DIYers tend to favor it.
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Lowest price we've seen: $23.99 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
Owners and mechanics generally rate the Denso 234-4805 as a reliable OE-quality replacement that clears oxygen sensor codes and restores smooth running. Complaints center on the narrow application and the effort of reaching the sensor.
This DENSO oxygen sensor (part number 234-4805) is a replacement part for select Toyota vehicles. It is manufactured and tested to OE standards, and each component is built as an exact replacement for a first-time fit.
The sensor has DENSO's aluminum oxide trap layer. This layer protects the ceramic element from silicone and lead poisoning. It is designed to support engine performance, fuel efficiency and longevity.
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