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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
For Your Every Summer RSVP, with Code: SUMMER15
Description
Holley EFI Dual-Sync Distributor Chev 350 454 # HO565-200BKHolley EFI Dual Sync Distributor Chev 350 454 # HO565 200BK Introducing the next generation of Holley EFI Dual Sync Distributors, the new design features an improved shutter wheel, high quality dual Hall Effect sensors, and an MSD cap and rotor! While these distributors are designed to be used primarily in sequentially injected installations, you can easily use them as a crank trigger for TBI system also. The precision machined shutter wheel design
Holley EFI Dual-Sync Distributor Chev 350 454 # HO565-200BKIntroducing the next generation of Holley EFI Dual Sync Distributors, the new design features an improved shutter wheel, high-quality dual Hall Effect sensors, and an MSD cap and rotor! While these distributors are designed to be used primarily in sequentially injected installations, you can easily use them as a crank trigger for TBI system also. The precision machined shutter wheel design ensures accurate timing, even at very high engine speeds. The Black anodized Gen 2 Dual Sync also included a QPQ coated shutter wheel for superior corrosion resistance, and the wheel has been pinned and welded to the shaft for increased reliability. These distributors can also be used with other EFI systems that support Hall Effect crank and cam sensor inputs. Do you need to a bronze gear for your billet cam? No problem, these distributors maintain MSD shaft diameters, making it easy to source a bronze gear!
Features:
Plug and Play with Holley EFI and Sniper EFI with adapter harness part number 558-493
Includes both crank and cam sensors to support sequential EFI operation
Hall Effect sensor design provides precise timing control and noise immunity
Black anodized CNC machined billet aluminum housing provides superior strength and great looks
Integrated LEDs allow for easy setup
Available for popular applications
Comes with iron distributor gear
Precision machined shutter wheel designed for improved accuracy at extreme engine RPM
Shutter wheel is pinned and welded to distributor shaft for superior reliability
Blank cap available for Coil-On-Plug applications
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
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Product Reviews
★★★★★ 5
Soft and perfect fit
Size: Medium, Color: (499) Federal Tan / Federal Tan / Coyote
Perfect fit, comfortable
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Comfortable and Warm!
Size: Large, Color: (390) Marine Od Green / Marine Od Green / Baroque Green
Not as well padded on the bottom as military issue but still a great sock!
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Pricing and fir
Size: Large, Color: (499) Federal Tan / Federal Tan / Coyote
Great fit
pricing is fair
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Reviewed in the United States on November 20, 2025
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
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Reviewed in the United States on October 21, 2025