2003 Wiring Harness Adapters and Extensions

Throttle Body Adapter Harness, LS2 Throttle Body to LS1 Vehicle, Each

Part Number: SUM-890106

Not Yet Reviewed

Estimated Ship Date: Today

Throttle Body Adapter Harness, 8-Pin LS1 Harness to 6-Pin LS2 Throttle Body Plug, Each

Part Number: TSN-81032

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today

Wiring Connectors, Coolant Temperature Sensor Extension, 36 in., 2 Pin, Each

Part Number: ICB-WECTS30-36

Not Yet Reviewed

Estimated Ship Date: Today

Wire Extension 24" LS Gen 3 MAP Manifold Absolute Pressure Sensor Connector

Part Number: ICB-WEMAP30-24

Not Yet Reviewed

Estimated Ship Date: Today

Wire Extension LS Gen 3 White 3-Wire CKP Crankshaft Position Sensor Connector

Part Number: ICB-WECKP30-36

Not Yet Reviewed

Estimated Ship Date: Today

Harness Extension, MAP Sensor, 26 in. Length, Chevy, Each

Part Number: CEI-109080

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

Wiring Pigtail, Alternator, Male and Female, 4-pin, 36 in. Long, Chevy, Each

Part Number: ICB-WEALT30-36

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Wire Extension 12" LS Purge Valve EVAP Solenoid

Part Number: ICB-WEPUR30-12

Not Yet Reviewed

Estimated Ship Date: Today

LS Gen 3 Throttle Body Wire Extension DBW 8 Wire Vortec 4.8 5.3 6.0 LQ4 LQ9 LM7

Part Number: ICB-WETHB30-12

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 15, 2026 if ordered today

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• Special Order