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Holley EFI Dual-Sync Distributors 565-204 Distributors, EFI, Dual-Sync, Hall Effect, Computer-controlled Advance, Male/HEI, Black Cap, Steel Gear, Shiny Housing, Chevy, 6.0L, 7.0L, Each

SKU: HLY565-204

Distributors

Holley EFI Dual-Sync Distributors 565-204 Distributors, EFI, Dual-Sync, Hall Effect, Computer-controlled Advance, Male/HEI, Black Cap, Steel Gear, Shiny Housing, Chevy, 6.0L, 7.0L, Each

SKU: HLY565-204

Distributors
A$1,390.79
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Precise timing control—Holley EFI dual-sync distributors are built with two Hall effect sensors for crankshaft and camshaft signals. The distributors can be used as just a crankshaft speed input or provide a camshaft sync signal for sequential fueling operation. They're also useful for crank and cam signals when running coil-on-plug applications. Dozens of models are available; order the one recommended for your vehicle/engine application.

Some features of Holley EFI dual-sync distributors include:

* CNC-machined billet aluminum housings with integrated LEDs for easy setup
* Hardened steel distributor gear
* Precision-machined shutter wheels that ensure accurate timing—even at very high RPM
* Designed to be plug-and-play with Holley systems, but may be used with other EFI systems that support Hall effect crankshaft and camshaft sensors
* Housings are available in a variety of finishes

Part Type

Distributors

Data: v4.2 - Upd: 2026-10-17 02:05:29

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
565-204
Product Attributes - Part Type
Distributors
Product Attributes - Product Line
Holley EFI Dual-Sync Distributors
Product Attributes - UPC
090127038413
Product Attributes - Distributor Cap Included
Yes
Product Attributes - Distributor Cap Style
Male/HEI
Product Attributes - Distributor Cap Type
Small cap
Product Attributes - Ignition Coil Included
No
Product Attributes - Ignition Module Included
Yes
Product Attributes - Computer-Controlled Compatible
Yes
Product Attributes - Trigger Style
Hall effect
Product Attributes - Advance Type
Computer-controlled
Product Attributes - Ignition Box Required
No
Product Attributes - Mechanical Tach Drive
No
Product Attributes - Slip Collar
No
Product Attributes - Distributor Gear Material
Steel
Product Attributes - Distributor Gear Rotation
Standard
Product Attributes - Distributor Cap Color
Black
Product Attributes - Housing Material
Aluminum
Product Attributes - Housing Finish
Polished
Product Attributes - Marine Use
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
For tall deck applications. Designed for use with Holley EFI systems. May fit other systems requiring Hall effect sensors. Compatible with bronze gears.
Product Attributes - Special Attention
When utilized with Sniper EFI, ignition adapter 558-493 is required.

Reference Information

Brand Name/s Holley
StreetFX SKU hly565-204
SFX Item ID 4783400
Supplier Item Code 4783400
Manufacturer SKU 565-204
Manufacturer UPC 90127038413
Alternative References HOL565-204, 6.0L, 7.0L

Compatibility

Application Data
  • MakeCHEVROLET
    Engine TypeV8
    Engine Size6.0L/366
    Engine FamilyChevy big block Mark IV
  • MakeCHEVROLET
    Engine TypeV8
    Engine Size7.0L/427
    Engine FamilyChevy big block Mark IV

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