SKU: DUI106882
MPN: 106882
The Wiring Harness HEI/DUI 3 Wire Terminal Block from Performance Distributors is a precision replacement ignition harness engineered for GM vehicles using HEI (High Energy Ignition) or DUI (Dual Universal Ignition) distributor systems. This distributor-to-coil harness restores reliable electrical connectivity in classic and modern muscle cars, hot rods, and street vehicles where original factory wiring has deteriorated, corroded, or failed. Designed by technicians who understand the critical role clean signal transmission plays in engine performance, this harness eliminates the weak spark and hard starts that plague aging ignition systems.
The three-wire terminal block configuration interfaces directly between your distributor output and ignition coil, carrying the high-voltage switching signal that fires your spark plugs with precision timing. Performance Distributors engineered this harness with proper gauge wire and secure terminal crimping to minimize voltage drop and eliminate the intermittent misfires and ignition noise common in OEM-style connections. The compact 4 x 1.5 x 7 inch profile fits tight engine bays without requiring extensive rerouting, and the lightweight 0.17 lb construction means zero parasitic weight penalty while delivering bulletproof durability under underhood heat and vibration.
Restoration builders, street performance enthusiasts, and mechanics upgrading aging GM ignition systems will find this harness essential for reliability—whether you're retrofitting a new aftermarket distributor or restoring an original-style setup to factory-plus condition. Installation is straightforward: simply disconnect your existing harness and plug the three-terminal block into your distributor and coil posts. This harness is the ideal upgrade for any GM small-block or big-block engine platform running HEI or DUI ignition technology, delivering the electrical integrity your engine demands for consistent starting, smooth idle, and predictable performance across the RPM range.
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