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Caspers Electronics Oxygen Sensor Extension Harnesses

4.7 out of 5 stars 56 Customer Reviews

Casper Electronics oxygen sensor extension harnesses prevent cutting and safely extend your O2 sensor wires during relocation. They are available in several styles to suit your application.

Results 1 - 25 of 38

Oxygen Sensor Extension Harness, 4 Wire, Flat, 24 in. Long, Chevy, GMC, Each

Part Number: CEI-109289-24

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Wiring Harness, O2 Sensor Extention, 4-Wire, Chevy, 24 in. Length, Chevy, Each

Part Number: CEI-109226

5.0 out of 5 stars ( 5 )

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Oxygen Sensor Harness, Extension, 4-wire, 12.00 in. Length, Chevy, 6.0L, 7.0L, Each

Part Number: CEI-109225

5.0 out of 5 stars ( 1 )

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Oxygen Sensor Harness, Extension, 4-wire, 36.00 in. Length, Chevy, 6.0L, 7.0L, Each

Part Number: CEI-109227

4.0 out of 5 stars ( 2 )

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Oxygen Sensor Extension Harness, 36 in., 4-Terminal Round Connector, Ford, Each

Part Number: CEI-109016

5.0 out of 5 stars ( 2 )

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Oxygen Sensor Extension Harness, 12 in., 4-Terminal Round Connector, Ford, Each

Part Number: CEI-109014

5.0 out of 5 stars ( 1 )

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Oxygen Sensor Wire Extension, 12 in. Length, 4-Wire, Square Gray Plugs, Each

Part Number: CEI-109004

5.0 out of 5 stars ( 3 )

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Oxygen Sensor Extension Harness, 24 in., 4-Terminal Round Connector, Ford, Each

Part Number: CEI-109015

5.0 out of 5 stars ( 2 )

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Oxygen Sensor Extension Harness, 12 in., 4-Terminal Square Connector, Dodge, Each

Part Number: CEI-109209

4.67 out of 5 stars ( 3 )

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Oxygen Sensor Extension Harness, 36 in., 4-Terminal Square Connector, Universal, Each

Part Number: CEI-109008

5.0 out of 5 stars ( 1 )

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Oxygen Sensor Extension Harness, 24 in., 4-Terminal Square Connector, Universal, Each

Part Number: CEI-109007

4.5 out of 5 stars ( 2 )

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Oxygen Sensor Extension Harness, 36 in., 4-Terminal Flat In-line Connector, Universal, Each

Part Number: CEI-109012

5.0 out of 5 stars ( 1 )

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Oxygen Sensor Extension Harness, 12 in., 4-Terminal Square Connector, Universal, Each

Part Number: CEI-109006

4.43 out of 5 stars ( 7 )

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Toyota O2 Extension 12"

Part Number: CEI-109206

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Jul 28, 2025 if ordered today

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Estimated Ship Date: Jul 28, 2025 if ordered today

Oxygen Sensor Extension Harness, 24 in., 4-Terminal Flat In-line Connector, Universal, Each

Part Number: CEI-109011

5.0 out of 5 stars ( 4 )

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Oxygen Sensor Wire Extension, 24 in. Length, Dodge, Each

Part Number: CEI-109210

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow if ordered today

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Oxygen Sensor Wire Extension, 24 in. Length, 4-Wire, Square Gray Plugs, Each

Part Number: CEI-109005

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jul 24, 2025 if ordered today

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Estimated Ship Date: Jul 24, 2025 if ordered today

Oxygen Sensor Extension Harness, 24 in., 4-Terminal Round Connector, Dodge, Each

Part Number: CEI-109034

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Aug 8, 2025 if ordered today

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Estimated Ship Date: Aug 8, 2025 if ordered today

Oxygen Sensor Extension Harness, 6 Wires, 12.00 in. Length, Fits 2.8 Bosch 6-pin Wide Band, Each

Part Number: CEI-109296

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Oxygen Sensor Extension Harness, 24.00 in. Length, 3 Male and 3 Female Round Terminals, Universal, Each

Part Number: CEI-109099

3.0 out of 5 stars ( 2 )

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Oxygen Sensor Extension Harness, 24 in., 1-Terminal Round Connector, Universal, Each

Part Number: CEI-109002

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Estimated Ship Date: Jul 24, 2025 if ordered today

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Oxygen Sensor Extension Harness, 12 in., 4-Terminal Round Connector, Dodge, Each

Part Number: CEI-109033

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Oxygen Sensor Extension Harness, 12 in., 2-Terminal Square Connector, GT Series, Each

Part Number: CEI-109090

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Oxygen Sensor Wire Extension, 12 in. Length, Subaru, Toyota, Each

Part Number: CEI-109236

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Oxygen Sensor Wire Extension, 24 in. Length, Subaru, Toyota, Each

Part Number: CEI-109237

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