Dominator EFI Auxiliary Harness
Used when adding a second wide band oxygen sensor to a Dominator EFI installation.
Features:
- J2A Connector
- #2 Wide band oxygen sensor harness (Fully Terminated)
- 23 user programmable input wires with pre-crimped ECU pins
Specs:
- Brand: Holley EFI
- Category: Ignition
- Emission Code: 3
- Harness Type: Auxiliary
- Part Type: Ignition Harness
- Product Type: J2 Auxiliary Input/ Output Harness - Connector
- Sub Category: Ignition Wire and Related Components
Tech Resources:
Hurry Up! Only 29 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.

