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Description
Holley EFI Low Profile 351W Dual Sync Distributor - 565-111Overview: Specifically designed for use with the Holley 351w Hi Ram intake manifold, this compact unit shares all of the same great features of our other Holley EFI Dual Sync distributors. The design includes dual Hall Effect sensors for the crankshaft and camshaft signals. It can be used as just a crank speed input, as well as providing a cam sync signal for sequential fueling operation. It is also perfect providing the needed crank and cam signals
Overview:
Specifically designed for use with the Holley 351w Hi-Ram intake manifold, this compact unit shares all of the same great features of our other Holley EFI Dual Sync distributors. The design includes dual Hall Effect sensors for the crankshaft and camshaft signals. It can be used as just a crank speed input, as well as providing a cam sync signal for sequential fueling operation. It is also perfect providing the needed crank and cam signals for Coil-On-Plug applications. The precision-machined shutter wheel design ensures accurate timing, even at very high engine speeds. Holley EFI Dual Sync Distributors are compatible with other EFI systems that support Hall Effect crank and cam sensors.
Features:
- Plug and Play with Holley EFI
- Includes both crank and cam sensors to support sequential EFI operation
- Hall Effect sensor design provides precise timing control and noise immunity
- CNC machined billet aluminum housing
- Integrated LEDs allow for easy setup
- Comes with hardened steel distributor gear
- Precision machined shutter wheel designed for improved accuracy at extreme engine RPM
- Billet Blank Cap also available for Coil On Plug Applications P/N 566-103
- Designed specifically for the Holley 351W Hi-Ram Manifold P/N 300-242 or 300-241
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1969 - 1981 | Ford | LTD | 351/5.8 V8 | |
| 1969 - 1972 | Ford | Mustang | Base | 351/5.8 V8 |
| 1969 - 1970 | Ford | Mustang | Shelby GT-350 | 351/5.8 V8 |
| 1970 - 1972 | Ford | Mustang | Mach 1 | 351/5.8 V8 |
| 1970 - 1972 | Ford | Mustang | Grande | 351/5.8 V8 |
| 1970 - 1971 | Ford | Torino | Brougham | 351/5.8 V8 |
| 1969 - 1971 | Ford | Torino | Squire | 351/5.8 V8 |
| 1969 - 1971 | Ford | Torino | Base | 351/5.8 V8 |
| 1969 - 1971 | Ford | Torino | GT | 351/5.8 V8 |
| 1969 - 1974 | Ford | Country Squire | 351/5.8 V8 | |
| 1969 - 1974 | Ford | Custom 500 | 351/5.8 V8 | |
| 1969 - 1970 | Ford | Fairlane | 351/5.8 V8 | |
| 1969 - 1970 | Ford | Falcon | 351/5.8 V8 | |
| 1969 - 1974 | Ford | Galaxie 500 | 351/5.8 V8 | |
| 1972 - 1976 | Ford | Gran Torino | 351/5.8 V8 | |
| 1971 | Ford | Mustang | Boss 351 | 351/5.8 V8 |
| 1973 | Ford | Mustang | 351/5.8 V8 | |
| 1969 - 1974 | Ford | Ranch Wagon | 351/5.8 V8 | |
| 1969 - 1979 | Ford | Ranchero | 351/5.8 V8 | |
| 1982 | Ford | LTD | S | 351/5.8 V8 |
| 1975 - 1982 | Ford | LTD | Base | 351/5.8 V8 |
| 1982 - 1984 | Ford | LTD | Crown Victoria | 351/5.8 V8 |
| 1983 - 1984 | Ford | LTD | Country Squire | 351/5.8 V8 |
| 1977 | Ford | LTD II | S | 351/5.8 V8 |
| 1977 - 1987 | Ford | E-350 Econoline Club Wagon | 351/5.8 V8 | |
| 1975 - 1976 | Ford | Elite | 351/5.8 V8 | |
| 1977 - 1979 | Ford | F-100 | 351/5.8 V8 | |
| 1977 - 1987 | Ford | F-150 | 351/5.8 V8 | |
| 1977 - 1987 | Ford | F-250 | 351/5.8 V8 | |
| 1977 - 1987 | Ford | F-350 | 351/5.8 V8 | |
| 1975 - 1977 | Ford | Granada | 351/5.8 V8 | |
| 1975 - 1978 | Ford | LTD | Landau | 351/5.8 V8 |
| 1975 - 1976 | Ford | LTD | Brougham | 351/5.8 V8 |
| 1975 - 1977 | Ford | Custom 500 | Base | 351/5.8 V8 |
| 1975 - 1983 | Ford | E-100 Econoline | 351/5.8 V8 | |
| 1975 - 1983 | Ford | E-100 Econoline Club Wagon | 351/5.8 V8 | |
| 1975 - 1987 | Ford | E-150 Econoline | 351/5.8 V8 | |
| 1971 | Ford | Torino | 500 | 351/5.8 V8 |
| 1971 | Ford | Torino | Cobra | 351/5.8 V8 |
| 1972 - 1976 | Ford | Torino | 351/5.8 V8 | |
| 1969 - 1974 | Mercury | Colony Park | 351/5.8 V8 | |
| 1969 | Mercury | Comet | 351/5.8 V8 | |
| 1969 - 1977 | Mercury | Cougar | Base | 351/5.8 V8 |
| 1969 - 1977 | Mercury | Cougar | XR-7 | 351/5.8 V8 |
| 1971 - 1979 | Mercury | Cougar | 351/5.8 V8 | |
| 1969 - 1971 | Mercury | Cyclone | 351/5.8 V8 | |
| 1971 - 1981 | Mercury | Marquis | 351/5.8 V8 | |
| 1977 | Ford | LTD II | Base | 351/5.8 V8 |
| 1977 | Ford | LTD II | Brougham | 351/5.8 V8 |
| 1977 | Ford | LTD II | Squire | 351/5.8 V8 |
| 1978 - 1979 | Ford | LTD II | 351/5.8 V8 | |
| 1977 | Ford | Ranchero | GT | 351/5.8 V8 |
| 1977 | Ford | Ranchero | 500 | 351/5.8 V8 |
| 1977 | Ford | Ranchero | Squire | 351/5.8 V8 |
| 1977 - 1979 | Ford | Thunderbird | 351/5.8 V8 | |
| 1980 | Lincoln | Continental | 351/5.8 V8 | |
| 1980 | Lincoln | Mark VI | 351/5.8 V8 | |
| 1977 | Lincoln | Versailles | 351/5.8 V8 | |
| 1978 - 1981 | Mercury | Grand Marquis | 351/5.8 V8 | |
| 1983 - 1989 | Mercury | Grand Marquis | Base | 351/5.8 V8 |
| 1986 | Mercury | Grand Marquis | Colony Park | 351/5.8 V8 |
| 1977 | Mercury | Cougar | Brougham | 351/5.8 V8 |
| 1977 | Mercury | Cougar | Villager | 351/5.8 V8 |
| 1975 - 1977 | Mercury | Monarch | 351/5.8 V8 | |
| 1975 | Mercury | Montego | Base | 351/5.8 V8 |
| 1975 | Mercury | Montego | Brougham | 351/5.8 V8 |
| 1975 | Mercury | Montego | Villager | 351/5.8 V8 |
| 1975 | Mercury | Montego | MX | 351/5.8 V8 |
| 1969 - 1976 | Mercury | Montego | 351/5.8 V8 | |
| 1969 - 1974 | Ford | Country Sedan | 351/5.8 V8 | |
| 1975 - 1987 | Ford | E-150 Econoline Club Wagon | 351/5.8 V8 | |
| 1975 - 1987 | Ford | E-250 Econoline | 351/5.8 V8 | |
| 1975 - 1987 | Ford | E-250 Econoline Club Wagon | 351/5.8 V8 | |
| 1975 - 1987 | Ford | E-350 Econoline | 351/5.8 V8 | |
| 1970 - 1974 | Mercury | Monterey | 351/5.8 V8 | |
| 1987 - 1991 | Ford | LTD Crown Victoria | Base | 351/5.8 V8 |
| 1969 - 1972 | Ford | Custom | 351/5.8 V8 | |
| 1978 - 1987 | Ford | Bronco | 351/5.8 V8 |
Specs:
| Application | Ford 351W |
|---|---|
| Brand | Holley EFI |
| Color | Black |
| Emission Code | 3 |
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Exchange/Return Notes
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4.7 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Good Replacement Set
Style: 19 Pack
Good replacement set for the price. Parts are basically like the originals and are easily installed for a perfect fit for the 25C.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 11, 2025
★★★★★ 5
Rejuvenates your Robovac, but one caution
I was a little wary buying third-party aftermarket parts for my Eufy Robovac 30c, however, all the parts in this kit are virtually identical to OEM parts. I replaced all three brushes and all three filters and let it loose on my Golden Retriever-inhabited living room. I can honestly say the result was a 50% increase in the amount of fur collected. I suspect that over time there is a loss of performance so gradual that it's easy to not notice. I assume the new filters returned the vacuum power to it's original level of suction was a big factor.
When I was browsing through all the available choices here on Amazon, a plastic "ring" kept appearing in many of the product images, however, people did not know what it is for or simply did not get one in their shipment. If you look at the photos I've attached one can see that I did indeed get one and figured out its purpose, to remove fur and/or hair from the horizontal brush.
The bottom line is that I would definitely buy this item again.
===========
EDIT, four weeks later: Since replacing the main roller brush with the one included with this product, I have experienced several “Roller brush is stuck” shutdowns and alerts. In each case, there has been nothing tangled in the brush and the brush was free to spin. I have to say it’s quite annoying to come home expecting the floor to be cleaned but only to find this error long before the job was finished. Today it gave this error twice in one cleaning cycle. I never experienced this problem with the OEM roller brush.
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Reviewed in the United States on September 8, 2019
★★★★★ 5
Euphy works good as new!
Style: 19 Pack
As soon as I opened the package everything looked the same- pre-filters, filters, main brush, and side brushes. I changed the big brush first;the only issue was the new brush body didn't have the white arrows to help aligning but that didn't affect how the brush worked. I changed filter and pre-filter, and finally the side brushes.
When I turned on my "Goophy" and tried to let her run the side brushes were a little too (Goophy's side brushes sounded a little louder). I trimmed the side brushes a little and all was well. Goophy didn't want to run herself but it didn't take long for me to figure out it wasn't the new brushes ;just the operator pushing the wrong button. My Goophy Euphy did what she was supposed to do- vacuum the carpet and tile floor. Goophy Euphy still wanted to take the long way to her charging station which was nothing new and easily corrected.
Over all the new brushes and filter restored Goophy Euphy back to when we first used her!
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Reviewed in the United States on July 22, 2023
★★★★★ 4
Don't be cheap like me - buy these and save yourself the hassle!
Style: 19 Pack
I made the mistake of going with another, slightly cheaper set of replacement parts for our Eufy RoboVac 11S. I did not heed the cautionary tales which lead me having to find replacement parts for the replacement parts. This brand fits our vacuum perfectly - the corner brushes don't pop off, the filter is the right size and the roller brush gets sufficiently tangled with cat hair so clearly also a good fit. My only concern (and why I only gave four stars) is - surprise! - the corner brushes. Do they stay on? YES! In fact, they is so secure, I had difficulty swapping one out. Here's the peculiarity of the brand - the "whiskers" on the spinner fell out. I found them all over the floor, on different surface types and under various conditions; they were not getting caught on any one thing. Not all at once, but over two or three uses, one of the corner brushes had become devoid of almost two entire spokes! Ironically, the little guy can't seem to pick up his own mess but I digress. Without the whiskers to grasp, removing the part was difficult. I ended up using a small flathead screwdriver for leverage to pop it off. While the other corner brush appeared to have shed some whiskers as well, it was not in need of replacement. Despite the shedding, this will be my first go-to for replacement parts next go round.
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Reviewed in the United States on September 24, 2022
★★★★★ 5
Nothing.
Style: 19 Pack
It’s as shown & working properly for now.
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Reviewed in the United States on January 1, 2026