Holley Tax Return Season Sale Going On Now--Ends February 29th!
No coupon code required--all discounts are already applied.
10% off on many items, including Sniper and Terminator X EFI Systems,
many HyperSpark distributors, MSD Superconductor Spark Plug Wires,
as well as Holley EFI and Terminator X Fuel Injectors!
-10% Drive-By-Wire Harness, GM DBW Throttle Body, Early Truck Engine

The Holley Dominator ECU has the capability to control drive-by-wire throttle-bodies built in. This harness makes the installation of GM's PN 12570800 fairly plug-and play. They have been precision made with an EMI-protective shielding to ensure proper operation.  Works with GM Throttle Pedal 10379038.

Note! See the Holley 558-411 for dual drive-by-wire throttle body installations.

Looking for a Drive-By-Wire Harness that works with the LS Engine?  Find that here.

Not Sure? Review this product documentation before you buy!

Installation Instructions
Holley Drive By Wire Throttle Body Installation Instructions

ApplicationAllows plug-and-play control between the Holley Dominator ECU and GM 12570800 DBW throttle body and GM 10379038 DBW gas pedals (Single DBW Throttle Body Control)
OEM ReplacementNo
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Drive-By-Wire Harness, GM DBW Throttle Body, Early Truck Engine

  • Views: 10273
  • Brand: Holley EFI
  • Product Code: 558-429
  • Availability: In Stock
  • $246.00
  • $220.95