


O2 Sensor Wire Harness Extension 24" LS Oxygen Sensor Square 4 Wire 1Key Plug
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
O2 Sensor Wire Harness Extension 24" LS Oxygen Sensor Square 4 Wire 1Key PlugLS O2 Sensor Square 4 Wire 1 Keyway Wire Harness 24" Extension Sealed, crimped and assembled in Wichita Kansas, with USA made, OEM grade, TXL wire Every assembly is individually hand tested to ensure it exceeds OEM standards Compatible with GM LS series engines with Square 4 Wire 1 Keyway style connectors (see photos) Includes: 1pc wire extension harness Assembled with OEM tooling, OEM Delphi (connector, lock, seals, and terminals),(uses OEM harness
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Your O2 Sensor Wire Harness Extension 24" LS Oxygen Sensor Square 4 Wire 1Key Plug orders ship within 1-2 business days.
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- Fast: 2-3 business days
- Express: 1-2 business days
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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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★★★★★ 5
Great quality!
Model: 36 Sqft
Works amazing!! Same quality as the name brand stuff but significantly cheaper.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Good inexpensive sound deadening
Model: 36 Sqft
This stuff works great, it's easy to apply, sticky, easy to cut. 36 ft.² was enough to do the inside and outside of my doors the roof, the wheel wells and rear fenders. Plus, it's a lot cheaper than others.
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Reviewed in the United States on February 8, 2026
★★★★★ 5
Very good quality
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Very good quality, noticeable difference after installation. The sound deadening effect is clear, with a great reduction in road noise and vibrations. Installation was quick and easy.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
just as good as twice price ones
Model: 36 Sqft
super sticky and work phenomenal just as good as name brand ones.just get these and save money for emblem stamps
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Reviewed in the United States on February 18, 2026
★★★★★ 4
Good quality
Model: 36 Sqft
Got it to deaden noisy furnace. Thin galvanized metal sheet feels sturdier and not flexing when blow fan started and stopped. Heavy duty and feel like real butyl material.
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Reviewed in the United States on May 3, 2026