34% under what the other stores charge
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The DENSO 234-4343 is a direct-fit oxygen sensor for a range of mid-2000s GM vehicles, including Buick Century and Rendezvous, Chevrolet Blazer, Impala and Monte Carlo, and related GMC and Pontiac models. It is built to OE specifications with DENSO's aluminum oxide trap layer, which shields the ceramic element from silicone and lead contamination. That protection is the main selling point over generic sensors, and DENSO is a common OE supplier, so fit and connector match are usually right the first time. It suits owners chasing a check-engine light or poor fuel economy on a listed vehicle who want an OEM-grade replacement rather than the cheapest universal sensor.
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Lowest price we've seen: $29.89 on Nov 12 at eBay. Tracked across 16 stores since Nov 12.
Owners of these GM vehicles generally report the sensor fits and plugs in as expected and clears oxygen sensor codes. Most praise centers on the OE-style fit and the brand's reputation; complaints are rare and tend to involve ordering the wrong position or a vehicle not on the fitment list.
This is a DENSO oxygen sensor, part number 234-4343. It is built as an exact-fit replacement part and is manufactured and tested to OE standards.
The sensor has an aluminum oxide trap layer. The layer is designed to protect the ceramic element from silicone and lead poisoning, which supports engine performance, fuel efficiency and longevity.
