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AEM Bosch LSU 4.9 UEGO Replacement Sensor - 30-2004

Marsoni M251S
Sale price$186.65
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Get it in 3 business days with 1 day shipping. Friday, May 29
AEM Bosch LSU 4.9 UEGO Replacement Sensor - 30-2004These sensors have a laser etched, calibrated resistor in the sensor's connector body. This resistor is specifically created for the exact sensor that it is attached to. Modifying this will invalidate the sensor's output. The wideband sensor is laboratory calibrated at the Bosch factory, accurate to 0. 1 AFR and never requires free air calibration when used with an AEM wideband AFR controller.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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Lisa Boudreaux
Phoenix, US
★★★★★ 4
CUTE
Size: 15.7", Color: Rustic Brown
Shelves are great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
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Nikki Shoemate
San Leandro, US
★★★★★ 5
Looks vintage and so gorgeous 😍
Size: 15.7", Color: Rustic Brown, Size: 15.7", Color: Rustic Brown
Very easy to put together and mount. Perfect size for over toliet. Love everything about this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
S
Verified Purchase
Stephen Stone
Belleville, US
★★★★★ 5
Love
Size: 15.7", Color: Black
I really like this. They're built well and looks beautiful. Very happy.😊
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Reviewed in the United States on March 18, 2026
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Amazon Customer
Waukegan, US
★★★★★ 5
Amazing
Size: 15.7", Color: Rustic Brown, Size: 15.7", Color: Rustic Brown
Easy to install and sturdy
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Reviewed in the United States on December 27, 2025
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Audretta
Bozeman, US
★★★★★ 5
Perfect.
Size: 15.7", Color: Black
Exactly as pictured.
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Reviewed in the United States on December 31, 2025

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