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HOLLEY EFI · HL558-504Holley EFI · HL558-504Holley EFI Mpfi Main Harness Kit, Universal V8, Holley HP, Dominator,
$1,840
incl. GST · ships AU-wide● Made to orderWe confirm availability with our supplier when you order.
Holley EFI Mpfi Main Harness Kit, Univ…$1839.71
Made to order · availability confirmed when you order
“Power means nothing until the rest of the car can use it.”
Specifications
On the spec sheet.
Spec sheet coming — contact support for full spec details. Fitment
Will this fit?
Fitment data still being indexed for this product. Ask BuildBot for a fit-check against your vehicle.
Pairs well with
Other parts in this build.
© 2026 TrackTheory · ABN 33 689 482 504Built in Adelaide · Shipping AU-wide
