Have Questions?
Holley 570-104 Hemi Main Harness Connector Kit
Guaranteed Fitment
Always the correct part
Added Value
Performance matched parts
In-House Experts
We know our products
Nationwide Delivery
Economy shipping
Body, Exterior & Accessories ❯
Brakes ❯
Tools, Hardware & Consumables ❯
Towing, Trailer & Truck Accessories ❯
Always the correct part
Performance matched parts
We know our products
Economy shipping
Introducing EFI Engine Connector Kits - From Holley EFI. With the latest addition to our ever-expanding Wiring Shop, our 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.
Description_DEF | Fuel Injection Harness Connector |
Description_DES | Hemi Main Harness Connector Kit |
Description_KEY | Connector kit; engine connectors; wiring connectors; connector; |
Description_FAB | OEM Quality Connectors - Pins, seals, and TPA's for every engine sensor |
Description_FAB | Pairs perfectly with flying lead harness (part number 558-126) when building a custom engine main harness |
Description_EXT | EFI Main Harness Connector Kit; Fits w/HEMI Engines; |
Description_INV | CONNECTOR KIT, HEMI MAIN HARNESS |
Description_SHO | FuelInjHrnsConnKit |
Description_MKT | Introducing EFI Engine Connector Kits - From Holley EFI. With the latest addition to our ever-expanding Wiring Shop, our 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. |
Product Type | Connector Kit |
Discount Percentage | 26-50% |
Emission Code | 4, 5 |
WARNING CA Proposition 65 Message | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
Clearance Category | Air and Fuel Delivery |
Sale Category | Air and Fuel Delivery |
Warning | California Proposition 65 |
WARNING CA Proposition 65 | Yes |
Brand | Holley EFI |
Length | 5.0000 |
Width | 6.0000 |
Height | 10.0000 |
Weight | 1.0000 |
Adding product to your cart
Solid hitch with serious strength and clean powder coat, heavy to lift, but installs easy and tows perfectly!!
Shipping was quick and on time - exactly what I needed for my small-block build - would buy again for sure
Weatherbeater mats fit my work truck perfectly. Dropped them in and nothing moves. Truly a great upgrade
Window visors look incredible and feel durable, install was simple. Zero wind noise on the highway!
Leveling kit components were well packed. Instructions lacking, but online videos helped. Rides level now and feels planted.
Found single lifter pairs in stock here when others required full sets, fast shipping got me racing again, hell yeah!!
Rear bumper upgrade looks better than factory plastic. Install was easy, and functionality is miles ahead. Highly recommended.
Tonneau cover fit is excellent. Clear instructions and a smooth install. Delivery to my door was super convenient
Turbo arrived next morning and matched description. Bolted up cleanly and truck is back to full power.
Husband’s birthday grille guard is rock solid, looks sharp he loves it so much!!! Thanks again
Customer service handled a damaged shipment immediately. Refund was painless. I’ll shop here again.
Exhaust system installed in two hours on my first try. Perfect fit and the sound is pure joy.
Need help? We're available at (877) 743-7862 or email us at: sales@shdp.ca
Ship To Your Home or Pick Up In Store
Cash, Debit, Credit, PayPal, and Financing
Shop With Confidence
Get the Help You Need