Holley EFI Transmission Control Harness - 1998+ Ford 4R70W/4R75W
Type: Harness Kit | Fits: Ford
Ford 4R70W/4R75W Transmission Harness - Complete terminated harness with j4 connector to operate 1998+ Ford electronic transmissions, for Dominator EFI and Terminator X Max only!
Features:
- Complete terminated harness with J4 connector
- 1998+ Ford 4R70W/4R75W
- Plug and play fully terminated harness
- Extra pressure transducer connector for optional Line pressure sensor (554-136)
Specs:
- Brand: Holley EFI
- Category: Transmission
- Connector Quantity: 8
- Emission Code: 5
- Grade Type: Performance
- Harness Application: Ford
- Harness Type: Transmission
- Make: Ford
- Part Type: Automatic Transmission Wiring Harness
- Product Type: Harness Kit
- Sub Category: Automatic Transmission Components
Tech Resources:
Requires software version 4.0 build 32 or higher and ECU firmware 4.0 build 110 or higher
***Dominator ECU Required P/N 554-114***
All 10 pins are terminated at the transmission connector. Not all of these pins are utilized however, there is no need to remove them prior to installation.
Instructions - 558-470_ford_4r70w_transmission_harness_diagram.pdf
Hurry Up! Only 46 items left in stock!
Copy link:
Share:
Ask a question
Shipping
We strive to provide fast and reliable shipping options for all our customers. For detailed information about our shipping rates, delivery times, and policies, please visit our Shipping Page.
Return Policies
Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
