Gen 2 Dual-Sync EFI Distributor for Small Block & Big Block Chevy [Black]

Name: Gen 2 Dual-Sync EFI Distributor for Small Block & Big Block Chevy [Black]
Brand: HOLLEY
SKU: 510-565-200BK
Price: 519.95 USD
Availability: InStock

^$519⁹⁵

3 left in stock

Ships on Nov 02, 2026

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Chevy

Gen 2 Dual-Sync EFI Distributor

Small Block & Big Block Chevy Engines

Dual Hall-Effect Crank & Cam Sensors

CNC-Machined Billet Housing, Steel Gear

QPQ-Coated Shutter Wheel, Pinned & Welded

MSD Cap & Rotor with Integrated LEDs

The Gen 2 Dual-Sync EFI Distributor from Holley delivers precise crank and cam timing signals for sequential EFI on Small Block & Big Block Chevy engines, and can also serve as a crank trigger for throttle-body injection.

Holley 565-200BK Features:

Dual Hall-Effect sensors for crankshaft and camshaft signals.
CNC-machined billet housing with a steel distributor gear.
QPQ-coated shutter wheel pinned and welded to the shaft for reliability.
MSD cap and rotor with integrated setup LEDs.
Black Anodized finish; plug-and-play with Holley EFI and other Hall-Effect systems.

Holley EFI Gen 2 Dual Sync Distributors feature a new design that improves on Holley's original dual sync distributor. Designed specifically with fuel injection in mind, by including both a crank and cam sensor, a Dual Sync distributor will work on both sequential and popular TBI EFI systems. Improvements made on the Gen 2 design over the original include an improved shutter wheel, dual hall effect sensors, and a premium MSD cap and rotor.

Features:

Plug and Play for Holley EFI
Supports sequential EFI using crank and cam sensors (included)
Hall Effect sensor for precision timing control
CNC machined billet aluminum housing.
Integrated LEDs for easy setup
Includes hardened steel distributor gear
QPQ coated shutter wheel for corrosion
Precision machined shutter wheel is pinned and welded to the distributor shaft
Blank cap sold separately for Coil-On-Plug applications

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