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Holley EFI 570-103 EFI Main Harness Connector Kit
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Key item features
- OEM Connectors: Includes OEM quality connectors, pins, seals, and TPAs for every engine sensor.
- Custom Harnesses: Designed for building custom engine main harnesses, eliminating the need to sort individual components.
- Flying Lead: Pairs with the flying lead harness (part number 558-126) for custom harness construction.
- GM Compatibility: Specifically compatible with GM LSX Engines.
- V8 Engine: Available for common domestic V8 engines, including LS, Coyote, 2V and 4V Modular, and GEN III HEMI engines.
- Holley EFI: Part of Holley EFI's expanding Wiring Shop, providing comprehensive engine connector kits.
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Specs
- Vehicle makeChevrolet
- Vehicle modelLSX
- Automotive electrical part & accessory typeConnectors
- CompatibilityGM LSX Engines
- Compatible carsGM LSX Engines
- Vehicle fitment typeSpecific
Current price is USD$161.95
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Columbus, 43215
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| Product | Viewing this itemHolley EFI 570-103 EFI Main Harness Connector Kit ![]() $161.95 current price $161.95 | Holley EFI 558-220 GDI Sub Harness - Early LTx Engine ![]() $152.95 current price $152.95 | Holley EFI 558-221 GDI Sub Harness - Late LTx Engine ![]() $152.95 current price $152.95 | Holley EFI 558-446 Pro Dash Service Harness ![]() $152.95 current price $152.95 | Holley EFI 554-137 Fuel Injection Pressure Sensor ![]() $204.95 current price $204.95 | Holley EFI 534-10 Engine Coolant Temperature Sensor ![]() $53.05 current price $53.05 | NTK Fuel Injection Pressure Sensor compatible with Chevrolet Traverse 3.6L V6 2009-2011 ![]() $97.91 current price $97.91 |
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| Vehicle make | ChevroletHolley EFI 570-103 EFI Main Harness Connector Kit | GMHolley EFI 558-220 GDI Sub Harness - Early LTx Engine | GMHolley EFI 558-221 GDI Sub Harness - Late LTx Engine | -Holley EFI 558-446 Pro Dash Service Harness | -Holley EFI 554-137 Fuel Injection Pressure Sensor | HolleyHolley EFI 534-10 Engine Coolant Temperature Sensor | ChevroletNTK Fuel Injection Pressure Sensor compatible with Chevrolet Traverse 3.6L V6 2009-2011 |
|---|---|---|---|---|---|---|---|
| Vehicle model | LSXHolley EFI 570-103 EFI Main Harness Connector Kit | LTxHolley EFI 558-220 GDI Sub Harness - Early LTx Engine | LTxHolley EFI 558-221 GDI Sub Harness - Late LTx Engine | -Holley EFI 558-446 Pro Dash Service Harness | 554-137Holley EFI 554-137 Fuel Injection Pressure Sensor | 534-10Holley EFI 534-10 Engine Coolant Temperature Sensor | TraverseNTK Fuel Injection Pressure Sensor compatible with Chevrolet Traverse 3.6L V6 2009-2011 |
| Automotive electrical part & accessory type | ConnectorsHolley EFI 570-103 EFI Main Harness Connector Kit | WiresHolley EFI 558-220 GDI Sub Harness - Early LTx Engine | WiresHolley EFI 558-221 GDI Sub Harness - Late LTx Engine | WiresHolley EFI 558-446 Pro Dash Service Harness | ConnectorsHolley EFI 554-137 Fuel Injection Pressure Sensor | -Holley EFI 534-10 Engine Coolant Temperature Sensor | -NTK Fuel Injection Pressure Sensor compatible with Chevrolet Traverse 3.6L V6 2009-2011 |
| Compatibility | GM LSX EnginesHolley EFI 570-103 EFI Main Harness Connector Kit | Early GM Gen V LTx EnginesHolley EFI 558-220 GDI Sub Harness - Early LTx Engine | Late GM Gen V LTx EnginesHolley EFI 558-221 GDI Sub Harness - Late LTx Engine | 553-111 and 553-112Holley EFI 558-446 Pro Dash Service Harness | -Holley EFI 554-137 Fuel Injection Pressure Sensor | -Holley EFI 534-10 Engine Coolant Temperature Sensor | -NTK Fuel Injection Pressure Sensor compatible with Chevrolet Traverse 3.6L V6 2009-2011 |
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About this item
Product details
Compatible with GM LSX Engines;
Introducing EFI Engine Connector Kits - From Holley EFI. With the latest addition to Holley's ever-expanding Wiring Shop, Holley's goal was to provide you with every engine connector used on the Holley EFI main harnesses. If you are building a custom engine harnesses for your ride, but you do not have the time to hassle with sorting out every connector, pin, seal and tpa, then these kits are for you! Kits are available for most common domestic V8's, such as; LS, Coyote, 2V and 4V Modular, and GEN III HEMI engines.;
Introducing EFI Engine Connector Kits - From Holley EFI. With the latest addition to Holley's ever-expanding Wiring Shop, Holley's goal was to provide you with every engine connector used on the Holley EFI main harnesses. If you are building a custom engine harnesses for your ride, but you do not have the time to hassle with sorting out every connector, pin, seal and tpa, then these kits are for you! Kits are available for most common domestic V8's, such as; LS, Coyote, 2V and 4V Modular, and GEN III HEMI engines.;
- OEM Quality Connectors â€" Pins, seals, and TPA’s for every engine sensor
- Pairs perfectly with flying lead harness (part number 558-126) when building a custom engine main harness
info:
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Specifications
Vehicle make
Chevrolet
Vehicle model
LSX
Automotive electrical part & accessory type
Connectors
Compatibility
GM LSX Engines
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warnings
Warning Text
California Proposition 65
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