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LS Gen 3 - O2 Sensor Wire Adapter - Gray/Black

Marsoni M251S
Sale price$32.95
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LS Gen 3 - O2 Sensor Wire Adapter - Gray/BlackGen 3 Gray (2 Keyway) Harness to Gen 3 Black (1 Keyway) O2 Sensor Adapter Reverse Adapter for Gen 3 LS Sensor Harness Mismatch This adapter connects a Gen 3 gray two keyway harness to a black one keyway oxygen sensor. Perfect for engine swaps or emissions upgrades where sensor and harness generations dont match. Adapts 2 keyway Gen 3 harness to 1 keyway oxygen sensor OEM quality plug and play design No wiring modification required Assembled with OEM
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4.7 ★★★★★
Based on 1437 reviews
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scott laser
Grantham, US
★★★★★ 5
Works as expected in polluted phoenix AZ
Size: 7.5" x 8.7" x 1.4"
these work great for me and the dealr charges $60 to replace one
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
C
Verified Purchase
Cesar S.
Draper, US
★★★★★ 4
Needs modification to fit Lexus TX 350
Size: 7.5" x 8.7" x 1.4"
Does not have a proper fit on a 2024 Lexus TX 350 without some minor modification. The filter casing has a guide that it's supposed fall into one of the pleats like a notch, however, notice this filter has the white strips which I guess are added structural support. I simply cut the 2 strips on the pleat the guide falls into. The filter will not fall apart by doing this. It's a minor inconvenience that can be easily corrected yourself or simply find another filter that does not have anything blocking the pleats the entire width of the filter.
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Reviewed in the United States on January 26, 2026
A
Verified Purchase
Apacs1
New York, US
★★★★★ 5
Fits perfectly
Size: 7.5" x 8.7" x 1.4"
easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
S
Verified Purchase
ShakeAndBake
Alexandria, US
★★★★★ 5
bosch never disappoints
Size: 7.5" x 8.7" x 1.4"
good product+fair price=value for money
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Reviewed in the United States on January 12, 2026
B
Verified Purchase
Blunt Bunny
Dallas, US
★★★★★ 5
First Rate Quality
Size: 7.5" x 8.7" x 1.4"
Easy installation; design of filter made installation mistake-proof.
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Reviewed in the United States on March 31, 2026

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