★★★★★ 4
Happy happy
Not bad kind of pricey that's all definitely would buy from them again
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Reviewed in the United States on February 4, 2026
GM LS O2 Oxygen Sensor Flat 4-Wire Female Connector Component Kit
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
GM LS O2 Oxygen Sensor Flat 4-Wire Female Connector Component KitLS Oxygen Sensor Connector Component Kit Female Flat 4 Wire Compatible with: 1997 and newer GM LS Series engines Replaces broken, worn out, or missing harness connectors for the Oxygen Sensor Compatible with 1997 and newer GM LS series engines with Flat 4 Female Terminal connector oxygen (O2) sensors Includes: Includes Connector, Retainer, terminals, and seals Includes additional seals and terminals as shown For the highest quality, most reliable
Quick Dispatch:
Your GM LS O2 Oxygen Sensor Flat 4-Wire Female Connector Component Kit orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your GM LS O2 Oxygen Sensor Flat 4-Wire Female Connector Component Kit ships.
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.4 ★★★★★
Based on 61 reviews
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Product Reviews
★★★★★ 5
Look good.
Seem to be good quality. Happy with them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 6, 2025
★★★★★ 5
Nice unit
Using this for deterring my hot rod being stolen. Good price for this. Installation was no surprises and just let them try to steal my hot rod now. First one that was ordered arrived damaged, went through the process of getting a replacement which was simple and received the replacement in a couple of days.
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Reviewed in the United States on September 20, 2024
★★★★★ 3
Does what it does
Does what it does
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Reviewed in the United States on November 10, 2025
★★★★★ 1
Failed after 2 months
Failed after about 2 months of being used as a battery isolator. When activated, only passes about 2 volts though the contacts on a 12 volt circuit now. Wasted my time and money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 26, 2025
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