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Vehicle Info NeededHOLLEYPART NUMBER: 510-556-181
556-181 EFI Crank Trigger Wheel for Universal Applications (7 in.)
$31895
Ships on 09/09/2026
Lowest Price GuaranteeUniversal
- Hall-Effect 7 in. Crank Trigger Wheel
- Universal Applications
- Most Accurate way to Trigger EFI
- Can be Installed as 12-1X or 12X
- 3/8 in. Thick Billet 6061-T6 Aluminum
- Silver
- Sold Individually
This Holley EFI 556-181 Hall-Effect Crank Trigger Wheel has powerful magnets embedded in thick billet aluminum for accurate triggering and to eliminate timing fluctuation.
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeIgnition Crank Trigger Wheel
BrandHOLLEY
Package Height0.6
Package Width9.0
Package Length12.1
Weight0.95 PG
Hardware IncludedNo
QuantitySold individually
Crankshaft Wheel MaterialAluminum
Vendor Part Number556-181
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
