HOLLEY
Wiring Harness - EFI Digital Dash I/O Adapter
$357.95
SKU: 558-433 · Ignition & Electrical
Universal fit — chosen by specification, works with any build. Check the specs against your setup, or ask us which one your combo needs.
Free Build Consultation
Request A Build Quote
Tell us your platform and power goal — our team specs the right combination of parts, tuning and machine work, then quotes it. No guesswork, dyno-proven.
- ✓ Free, no-obligation build quote
- ✓ Dyno-proven part recommendations
- ✓ Reply within 1 business day
Prefer to talk? Call our build team
(313) 561-5500