SKU: HLY556-173
UPC: 090127470688
MPN: 556-173
The 7IN12-1X Crank Trigger Kit Coyote Hall Effect by HOLLEY is an essential ignition upgrade for Ford Coyote engine swaps and modern restorations. Designed for builders and enthusiasts working with Coyote powerplants, this crank trigger system replaces OEM distributor-dependent ignition with a precise, hall effect sensor-based solution. Whether you're converting a classic chassis to Coyote power or tuning a modern 5.0L platform, this kit eliminates timing uncertainty and unlocks full potential from your EFI tune.
Hall effect sensor technology delivers reliable, noise-immune ignition triggering compared to traditional magnetic pickup designs. The 7-inch trigger wheel mounts directly to your crankshaft, providing 12 individual trigger points that enable sequential spark and fuel delivery across eight cylinders. HOLLEY's proven engineering ensures accurate RPM sensing from idle through redline, critical for proper fuel mapping and knock control in forced-induction applications. The compact 1X configuration simplifies wiring harness integration while maintaining the resolution needed for street and strip duty.
This crank trigger kit is ideal for engine builders implementing Coyote swaps in Fox-body Mustangs, C4 Corvettes, and custom hot rods where factory ignition systems must be bypassed. Installation pairs seamlessly with HOLLEY EFI controllers and aftermarket ECUs that require external crank input signals. Verify your application uses a compatible crankshaft snout configuration before ordering; this kit delivers the ignition accuracy demanded by modern tuning platforms and ensures consistent cold-start and transient response on turbocharged or supercharged builds.
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