Wiring Harness Adapters and Extensions

Harness Adaptors, Holley EFI, LS3 MAP Sensor Adapter, Plug-and-Play, Pre-Terminated, Adapts to LS1/LS2 Engine, Chevy, 5.7L, 6.0L, Each

Part Number: HLY-558-416

4.88 out of 5 stars ( 17 )

Estimated Ship Date: Monday 10/6/2025

Throttle Body Adapter Harness, 6-Wire, Chevy, LS, 5.3, 6.2 Gen IV Engines, Each

Part Number: ICB-WETHB40-12

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/6/2025

Adapter Harnesses, Holley EFI, MAP Sensor Adapter, 3-pin Delphi GT to 3-pin Delphi M/P 150 Connector, Plug-and-Play, LS Engine Harness, Each

Part Number: HLY-558-467

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

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

Part Number: CEI-108115

4.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 10/6/2025

Adapter Harnesses, Holley EFI, MAP Sensor Adapter, MPFI Weatherpack 2-pin to 3-pin Delphi GT Connector, Plug-and-Play, LS Engine Harness, Each

Part Number: HLY-558-466

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/6/2025

Map Sensor Adapter, Convert LS1/LS2 Map Sensor Harness to LS3 Sensor, Chevrolet, Each

Part Number: CEI-109103

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

Throttle Body Adapter Harness, 24 in. Long, Each

Part Number: CEI-109133

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

Wiring Harness Adapters and Extensions, MAF/IAT Breakout Harnesses, Extension with Splitter, Delphi/GM, Metri-pack GT Series, Chevrolet, 6.2L LS, Each

Part Number: ICB-WAMAF42-36

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Wiring Harness Adapters and Extensions, MAF Harness Extensions, Delphi/GM, Metri-pack GT Series, 5-pin, 6.00 in. Length, Chevy, Small Block LS, Each

Part Number: ICB-WAMAF33-6

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Extension Harness, MAF/IAT Breakout, Chevy, Pontiac, Each

Part Number: CEI-108165

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 10/6/2025

Wiring Harness, MAF/IAT Breakout-GT Series Dense, Each

Part Number: CEI-108136

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 10/6/2025

Harness Extension, MAF Sensor, 48 in. Length, Chevrolet, 5-Wire, Each

Part Number: ICB-WEMAF31-48

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Wiring Pigtail, Fuel Injector, Early to Late GM TPS, Each

Part Number: FST-308030

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

Map Sensor Extension Harness, 24 in. Length, Each

Part Number: TSN-81034

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/6/2025

Harness Extension, 60 in. MAF Sensor Harness, 40 in. IAT Sensor Harness, Chevrolet, LS3, Each

Part Number: ICB-WAMAF30-60

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Map Sensor Adapter, Convert LS Gen III Map Sensor Harness to Gen IV LS Bosch Style Sensor, Nexus Rebel, Chevrolet, Each

Part Number: HTH-HT-186511

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/6/2025

Map Sensor Adapter, Convert LS1/LS2 Map Sensor to LS3 Sensor, Harness Adapter, Chevy, LS, Each

Part Number: TSN-81033

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Mass Air Meter Wiring Extension/Adapter -- GM LS1 conversion to LS3/LS7 MAF Sensor with IAT

Part Number: JMS-JLS1LS3AD

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 14, 2025 if ordered today

• Drop Ship
• Special Order

Mass Air Meter Wiring Extension -- LS3 and LS7 MAF

Part Number: JMS-JLS3EXT

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Mass Air Meter Wiring Extension/Adapter, LS2 conversion to LS3/LS7 MAF Sensor, Each

Part Number: JMS-JLS2LS3ADX

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025 if ordered today

• Drop Ship
• Special Order

Throttle Body Adapter Harness, Position Sensor, GM, LS2, LS3, LS7, LS9, LSA, Each

Part Number: LPE-CE105454

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

Wire Extension Harness 24" LS Gen 3 MAF Mass Air Flow Sensor Wiring LS1 5.7L

Part Number: ICB-WEMAF30-24

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Harness Adapter, MAF, 9.5 in. Wire Length, LS1 MAF To LT1 Engine, Each

Part Number: CEI-108100

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

Mass Air Wiring Adapter, 5-PIN to Slot Style, Each

Part Number: GRN-130108

Not Yet Reviewed

Estimated Ship Date: Oct 28, 2025 if ordered today

• Drop Ship
• Special Order