Holley EFI Dual Sync BBC Tall Deck Distributor, Black - 565-204BK
SKU: 74782423392

Holley EFI Dual Sync BBC Tall Deck Distributor, Black - 565-204BK

$304.18 $337.98
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Description

Holley EFI Dual Sync BBC Tall Deck Distributor, Black - 565-204BKOverview: 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 ensures accurate timing, even at very high engine

Overview:

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 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 hardened steel 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

Application:

Year Make Model Submodel Engine Size
1970 - 1972 Chevrolet Kingswood 402/6.6 V8
1970 - 1972 Chevrolet Kingswood 454/7.4 V8
1973 - 1975 Chevrolet Laguna 454/7.4 V8
1991 - 1995 Chevrolet K2500 454/7.4 V8
1992 - 1995 Chevrolet K2500 Suburban 454/7.4 V8
1977 - 1986 Chevrolet K30 454/7.4 V8
1988 - 1995 Chevrolet K3500 454/7.4 V8
1975 Chevrolet Malibu Classic 454/7.4 V8
1970 - 1975 Chevrolet Monte Carlo 454/7.4 V8
1988 Chevrolet R20 Cheyenne 454/7.4 V8
1988 Chevrolet R20 Custom Deluxe 454/7.4 V8
1988 Chevrolet R20 Scottsdale 454/7.4 V8
1988 Chevrolet R20 Silverado 454/7.4 V8
1987 Chevrolet R20 454/7.4 V8
1987 - 1988 Chevrolet R20 Suburban 454/7.4 V8
1989 Chevrolet R2500 454/7.4 V8
1989 - 1991 Chevrolet R2500 Suburban 454/7.4 V8
1987 - 1988 Chevrolet R30 454/7.4 V8
1989 - 1991 Chevrolet R3500 454/7.4 V8
1987 - 1988 Chevrolet V20 Suburban 454/7.4 V8
1990 Chevrolet V2500 Suburban 454/7.4 V8
1987 - 1988 Chevrolet V30 454/7.4 V8
1989 - 1991 Chevrolet V3500 454/7.4 V8
1993 GMC K2500 Suburban SLE 454/7.4 V8
1963 - 1969 Chevrolet Bel Air 427/7 V8
1965 - 1969 Chevrolet Bel Air 396/6.5 V8
1970 - 1975 Chevrolet Bel Air 454/7.4 V8
1970 - 1972 Chevrolet Bel Air 402/6.6 V8
1973 - 1974 Chevrolet K30 Pickup 454/7.4 V8
1969 Chevrolet Kingswood 396/6.5 V8
1969 Chevrolet Kingswood 427/7 V8
1966 - 1969 Chevrolet Caprice 427/7 V8
1966 - 1969 Chevrolet Caprice 396/6.5 V8
1968 Chevrolet Chevelle Malibu 396/6.5 V8
1968 Chevrolet Chevelle Nomad 396/6.5 V8
1969 - 1970 Chevrolet Chevelle 396/6.5 V8
1970 - 1973 Chevrolet Chevelle 454/7.4 V8
1970 - 1972 Chevrolet Chevelle 402/6.6 V8
1968 Chevrolet Chevy II 396/6.5 V8
1965 Chevrolet Corvette 396/6.5 V8
1966 - 1969 Chevrolet Corvette 427/7 V8
1970 - 1974 Chevrolet Corvette 454/7.4 V8
1970 Chevrolet Estate 454/7.4 V8
1971 - 1972 Chevrolet Camaro Base 402/6.6 V8
1970 - 1972 Chevrolet Camaro SS 402/6.6 V8
1972 Chevrolet Camaro Z28 402/6.6 V8
1973 - 1980 Chevrolet C10 Suburban 454/7.4 V8
1968 - 1969 Chevrolet C20 Pickup 396/6.5 V8
1970 - 1972 Chevrolet C20 Pickup 402/6.6 V8
1973 - 1974 Chevrolet C20 Pickup 454/7.4 V8
1968 - 1969 Chevrolet C20 Suburban 396/6.5 V8
1970 - 1972 Chevrolet C20 Suburban 402/6.6 V8
1976 - 1978 Chevrolet K5 Blazer 454/7.4 V8
1975 - 1980 Chevrolet C10 454/7.4 V8
1973 - 1986 Chevrolet C20 Suburban 454/7.4 V8
1968 - 1969 Chevrolet C30 Pickup 396/6.5 V8
1970 - 1972 Chevrolet C30 Pickup 402/6.6 V8
1973 - 1974 Chevrolet C30 Pickup 454/7.4 V8
1967 Chevrolet Camaro Base 396/6.5 V8
1967 Chevrolet Camaro RS 396/6.5 V8
1967 - 1969 Chevrolet Camaro SS 396/6.5 V8
1969 Chevrolet Camaro Base 427/7 V8
1969 Chevrolet Camaro RS 427/7 V8
1966 - 1970 Chevrolet El Camino 396/6.5 V8
1970 - 1974 Chevrolet El Camino 454/7.4 V8
1970 - 1972 Chevrolet El Camino 402/6.6 V8
1973 - 1974 Chevrolet G10 Van Base 454/7.4 V8
1973 - 1974 Chevrolet G20 Van 454/7.4 V8
1973 - 1974 Chevrolet G30 Van Base 454/7.4 V8
1963 - 1969 Chevrolet Impala 427/7 V8
1965 - 1969 Chevrolet Impala 396/6.5 V8
1966 - 1967 Chevrolet Impala Base 396/6.5 V8
1966 - 1967 Chevrolet Impala Base 427/7 V8
1966 - 1967 Chevrolet Impala SS 396/6.5 V8
1966 - 1967 Chevrolet Impala SS
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 74782423392

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4.7 ★★★★★
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Product Reviews
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Verified Purchase
breezob
Massapequa, US
★★★★★ 1
Not strong
Style: Updated 3.46in Magnet L Red Hooks 2PCS
The magnets are not strong enough to hold garden tools!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
H
HAW
West Palm Beach, US
★★★★★ 5
Awesome product!!!
Style: Updated 3.46in Magnet L Red Hooks 2PCS, Style: Updated 3.46in Magnet L Red Hooks 2PCS
Wow when they describe these magnets as “super string” they are not joking! Magnets are so strong you must be careful when placing them on your metal cabinet, lest it pinch your finger when the magnet grabs the metal! This is an awesome product. The hooks have a hole in their base that fits over a threaded post / bolt coming out of the center of the magnet and the kit comes with two washers, lock washers, and bolts to attach the hooks to the magnets. Takes about one minute per magnet to assemble. Once on the wall they feel like they will hold a lot of weight though I did not try to test the upper limit. No problem at all holding yard tools and the like. The hooks or arms have a nice rubberized coating and extend about 4.5” out from the wall. At $15 each these seemed a little pricy but wow what a great solution for hanging things on metal walls. They work so well I will be buying more of these! I actually have some other similar very strong round magnets made for a similar purpose … but they do not have the “built-in” hooks like these do and it makes a big difference for the usefulness! Considering all of that I think they are a great value. Item reviewed: MUTUACTOR Updated Super Strong Magnetic Hooks,40lbs, 2-pack
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2026
L
Leslie McMillen
Bozeman, US
★★★★★ 5
These are great to have
Style: Updated 3.46in Magnet L Red Hooks 2PCS
These are so strong and bigger than I thought they would be in a positive way the price is good for the product. You can take them and put them wherever you need to. They can go on a fridge or transfer to anything magnetic, can go anywhere. These are a need in the home.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
M
Verified Purchase
Michael
Massapequa, US
★★★★★ 5
Awesome -- they work perfectly
Style: Updated 3.46in Magnet L Red Hooks 2PCS
Got these to store a DeWalt cordless drill and impact driver on the side of a Gladiator garage cabinet -- and they work perfectly for that. The magnet is incredibly strong, easily supporting the bare tools, and seems even to work perfectly well with an 8ah XR battery on the tool -- not that it's necessary since I don't store them like that. I like that the magnet is padded with rubber. Very nice units, I will get more for sure to store other items.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
B
Bluesman
Dallas, US
★★★★★ 5
Incredibly strong magnets and thick, robust hooks. Excellent combination!
Style: Updated 3.46in Magnet L Red Hooks 2PCS
These magnetic hooks are really strong. Seriously! Each part is made to carry weight and last. The hooks are built out of thick steel stock. They bolt up to large magnets that grab onto steel surfaces and won't let go. The cabinets in my shop are all steel so these worked perfectly on the sides of the lower units. I have a few #12 AWG extension cords that are bulky and heavy. Truthfully, I didn't think these hooks would handle them. They do without any issue. Another application is a 30' long #10/4 AWG SO cable that powers my powder coating oven. It's usually unplugged and wrapped up. It would often end up on the floor where it was constantly in the way. The outside of the oven is all steel but I didn't want to make holes in it for cable hangers. Again, I didn't think that these magnetic hooks could possibly be strong enough to handle the weight of that cable but they do. And once they're attached, it takes a lot of effort to remove them! Amazing performance!! I'm thrilled with these magnetic hooks. They are super strong and, obviously, simple to use. Importantly, they stay in place as they should. I wholeheartedly recommend these hooks to anyone. Great product! Incredibly strong magnets and thick, robust hooks. Excellent combination!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026

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