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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 36

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

Part Number: CEI-109289-24

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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

Part Number: CEI-109226

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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

Part Number: CEI-109014

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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

Part Number: CEI-109015

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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

Part Number: CEI-109016

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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

Part Number: CEI-109004

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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

Part Number: CEI-109006

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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

Part Number: CEI-109209

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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

Part Number: CEI-109007

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Dec 31, 2025 if ordered today

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Estimated Ship Date: Dec 31, 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 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

Toyota O2 Extension 12"

Part Number: CEI-109206

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

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

Part Number: CEI-109210

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

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: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 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: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

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 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 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

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

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

Part Number: CEI-109033

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

Oxygen Sensor Wire Extension, 36 in. Length, for use on Acura®/Honda®, Each

Part Number: CEI-109202

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

Oxygen Sensor Extension Harness, 24 in., 4-Terminal Flat Connector, Mitsubishi, Each

Part Number: CEI-109221

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

Oxygen Sensor Extension Harness, 36 in., 4-Terminal Flat Connector, Mitsubishi, Each

Part Number: CEI-109222

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

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

Part Number: CEI-109236

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

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

Part Number: CEI-109237

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

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