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Description
S&S Diesel CP4-6.7F-BP-G2.1 Gen2.1 CP4 Disaster Prevention Bypass KitKeep the fuel system in your Ford 6. 7L Powerstroke protected from potential CP4 pump failure by installing the S&S Diesel Gen2. 1 CP4 Disaster Prevention Bypass Kit CP4 6. 7F BP G2. 1 from Guaranteed Auto Parts. S&S Diesel Motorsport, creator of the original Disaster Prevention Kit for the 6. 7 Powerstroke, is at it again with a much improved second generation kit. Since its debut in 2016, the original S&S 6. 7L Powerstroke CP4 Bypass Kit (Disaster
Keep the fuel system in your Ford 6.7L Powerstroke protected from potential CP4 pump failure by installing the S&S Diesel Gen2.1 CP4 Disaster Prevention Bypass Kit CP4-6.7F-BP-G2.1 from Guaranteed Auto Parts. S&S Diesel Motorsport, creator of the original Disaster Prevention Kit for the 6.7 Powerstroke, is at it again with a much-improved second generation kit. Since its debut in 2016, the original S&S 6.7L Powerstroke CP4 Bypass Kit (Disaster Prevention Kit) has safeguarded thousands of injectors from CP4 debris. Being a company founded by fuel system engineers, S&S Diesel Motorsport has the ability, and responsibility, to offer the best solutions to fuel system problems. While the original bypass kit offers really good protection from a CP4 failure, the last four years have given the S&S engineers plenty of time to discover and eliminate potential problems.
The S&S Diesel Motorsport Gen2.1 6.7L Power Stroke CP4 Bypass Kit features all quick connect lines that eliminates the need for cutting the factory supply line, which is a debris introduction point, especially if the cut is not thoroughly deburred. It also eliminates the need to use a compression fitting, which is a potential leak point. The OE-style quick connect lines also eliminate any threaded joints that are further leak points and have the potential of generating debris during install.
The main task of both kits is to supply the CP4 case and the metering unit/plungers independently with clean, filtered fuel, and to reroute case fuel back to the tank. There are two major improvements in how the Gen2.1 kit accomplishes this. The Gen2.1 fuel supply is split off into two separate lines 25-inches from the CP4, which will eliminate the chance of contaminated case fuel back-feeding into the clean fuel supply line. The original bypass kit splits off within an inch of the pump, and is more susceptible to debris back-feeding, if the CP4 failure produces enough debris to clog the fuel return system. The other improvement is what happens to the debris when it exits the pump case. The Gen2.1 kit features a billet return filter head that accepts a readily available Donaldson P550943 spin-on fuel filter which prevents debris from reaching the tank, fuel lines, and supply pump. Previously, victims of a CP4 failure, with the good fortune of having an original bypass kit installed, would still need to drop the tank and deal with all of the debris created by the failed CP4.
One would think that major improvements would come at a major price increase. Having a clear understanding of common rail diesel fuel systems, and decades of OE engineering experience, enabled the engineers at S&S to make improvements without increasing production costs. Thanks to efficient design and use of material, the S&S Diesel Motorsport Gen2.1 6.7L Power Stroke CP4 Bypass Kit delivers even more value than the original. Best of all, there is no longer a need to distinguish what year the truck was made, the new Gen2.1 Bypass Kit will fit the Ford F250/F350/F450/F550 Super Duty pickup trucks with the 6.7 Powerstroke Diesel engine.
WARRANTY INFO:
2 Year / Unlimited Mileage
The S&S Diesel Motorsport Gen2.1 6.7L Power Stroke CP4 Bypass Kit features all quick connect lines that eliminates the need for cutting the factory supply line, which is a debris introduction point, especially if the cut is not thoroughly deburred. It also eliminates the need to use a compression fitting, which is a potential leak point. The OE-style quick connect lines also eliminate any threaded joints that are further leak points and have the potential of generating debris during install.
The main task of both kits is to supply the CP4 case and the metering unit/plungers independently with clean, filtered fuel, and to reroute case fuel back to the tank. There are two major improvements in how the Gen2.1 kit accomplishes this. The Gen2.1 fuel supply is split off into two separate lines 25-inches from the CP4, which will eliminate the chance of contaminated case fuel back-feeding into the clean fuel supply line. The original bypass kit splits off within an inch of the pump, and is more susceptible to debris back-feeding, if the CP4 failure produces enough debris to clog the fuel return system. The other improvement is what happens to the debris when it exits the pump case. The Gen2.1 kit features a billet return filter head that accepts a readily available Donaldson P550943 spin-on fuel filter which prevents debris from reaching the tank, fuel lines, and supply pump. Previously, victims of a CP4 failure, with the good fortune of having an original bypass kit installed, would still need to drop the tank and deal with all of the debris created by the failed CP4.
One would think that major improvements would come at a major price increase. Having a clear understanding of common rail diesel fuel systems, and decades of OE engineering experience, enabled the engineers at S&S to make improvements without increasing production costs. Thanks to efficient design and use of material, the S&S Diesel Motorsport Gen2.1 6.7L Power Stroke CP4 Bypass Kit delivers even more value than the original. Best of all, there is no longer a need to distinguish what year the truck was made, the new Gen2.1 Bypass Kit will fit the Ford F250/F350/F450/F550 Super Duty pickup trucks with the 6.7 Powerstroke Diesel engine.
Features:
- Made In The USA
- Improves CP4 Output Past 3,000 RPM
- Uses OE-Style Quick Connects (Easy Install)
- One Part Number Fits All Years (2011 and Newer)
- New And Improved Gen2.1 Disaster Prevention Kit
- Fuel Supply Split-Off 25-Inches Away From The CP4 Pump
- Return Filter Isolates CP4 Debris Before It Goes To The Tank
- Thoroughly Validated & Proven To Work In Real-World Testing
- Gen2.1 Billet Filter Head Accepts Standard Spin-On Fuel Filters
- Safeguards Fuel Injectors, Rails, Lines, And Tank From CP4 Debris
- Includes Donaldson P550943 Fuel Filter (9-Micron At 99% Efficiency)
- Can Extend The Range Of A Truck In The Event Of A CP4 Failure
WARRANTY INFO:
2 Year / Unlimited Mileage
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4.7 ★★★★★
Based on 2116 reviews
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Product Reviews
★★★★★ 5
My Dogs Love This!
As a dog mom to two pups, I’m always looking for toys that encourage interactive play, and this one has been a hit.
✨ What stood out:
✔ Easy-to-grab handles
✔ Great for tug-of-war
✔ Flexible but sturdy design
✔ Floats in water
✔ Fun sensory scent
✔ Perfect size for medium dogs
The dual-handle design makes it comfortable for both me and my dogs during tug games, and it feels much safer than trying to grab random rope toys.
The material has enough flexibility to be comfortable while still feeling durable enough for active play.
My dogs immediately took interest in it, and we’ve used it both indoors and outdoors. It’s made from a thick material that is extremely durable as well as chew resistant. My dogs go crazy over it!
If your dog enjoys tug-of-war, fetch, or interactive play with their humans, this is a really fun option!
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Quality materials, durable, and fun to play with.
This Pupstages Flex-Force tug toy is perfect for people who have two large dogs, like I do.
The two-handle design is a great feature. It gives you a comfortable, secure grip during tug-of-war, which makes playtime feel more controlled. It’s also helpful if you have two dogs who want to play at the same time, because each can grab a side and get into the game. Another fun thing about the design is that the irregular shape gives it an unpredictable bounce that’s exciting for my dog who loves to fetch. The material is rubbery enough that it bounces well too.
The material has a bit of flex to it, which helps absorb some of the pulling force instead of feeling rigid. That slight give makes tugging feel smoother and a little easier on both your hands and your dog’s mouth. It’s also more fun for my dogs. It’s sturdy enough for regular play, though as with most toys, extremely aggressive chewers may still wear it down over time. So far, I’ve been impressed by how sturdy it is.
The material feels high-quality to me, like it’s made from very good materials. I’ve owned probably a hundred different dog toys, and this feels like one of the better made ones.
One fun detail is the blueberry-apple scent. It’s not overpowering, but it’s noticeable enough to make the toy more interesting to dogs. I can smell it if I hold it up to my nose. Whether they think it smells like a gourmet treat or just “intriguing mystery object” is up to them, but it definitely adds to the appeal.
The fact that it floats is a nice bonus. It opens up the option for water play, like tugging at the edge of a pool, lake, or even just retrieving it from shallow water. I have a tiny pond in my backyard, so most dog toys end up wet at some point.
Size-wise, it works well for a range of breeds. It’s big enough to feel substantial but not so large that it becomes awkward to handle. It has some nice weight to it, while still being manageable for smaller dogs to carry.
This is a fun, well-designed tug toy that encourages interactive play. It’s comfortable to hold, engaging for my dogs, and versatile enough for both land and water adventures. I think it’s a very good value at the current price.
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Reviewed in the United States on March 26, 2026
★★★★★ 4
Not for aggressive chewers but fun otherwise!
This flex tug toy is great for pups who loves tug of war! It is a softer material than I thought it would be, which does make it more likely to be ripped by aggressive chewers. I have a pitbull who would easily destroy this toy.
Luckily, I have a smaller puppy as well, and he loves playing tug of war with it. The soft material makes it more comfortable to be held when playing.
It also smells much better than most dog toys lol! The blueberry scent is great and definitely makes it more enjoyable for me to play with my dog, and he loves it too!
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Reviewed in the United States on March 31, 2026
★★★★★ 5
Durable + Fun Design + Smells Good Too
I chose this flex-force dog tug toy from Pupstages for my two Pitbulls. They like to wrestle and this seemed like a good option that would keep them from wrestling throat to throat. This sounds scary, but they never bring blood or even have slobber on their neck when they’re playing.
I was extremely pleased with the quality of this dog boy and also the scent was bright and fun. I asked my husband to smell it before I told him what it was, he said it smelled fruity. The blueberry apple scent is pleasant and might keep it long-term from smelling like dog slobber.
The materials used to make this feels very durable and it stretches easily. It’s also a fun way to play with each dog one on one or sometimes play with both of them while I pull on the other end.
Even though my dogs are aggressive chewers, I don’t have any concerns about the durability of this toy. It will not be something that I leave for them to chew on when we are not playing since it was not designed for that purpose. If they accidentally get a hold of it, I don’t think it will be an issue short term if they chew on it. For the sake of comparison, I had a dog pull toy that I would have said was similar to this one.
When this pull toy from Pupstages arrived, I realized there was a difference compared to a similar toy we have had a couple years. Our previous toy’s design - connected the two loops without any angle - that toy lays flat on the counter. This toy connects the two looped areas at a 90° angle to each other. I like this design. This new angle feels different when tugging for me and the dogs. I can hold the old toy and the new toy and offer to play…at least now, they are choosing this one.
I hope my details, thoughts and photos help someone.
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Reviewed in the United States on March 25, 2026
★★★★★ 1
Broke Within Moments
My two medium sized dogs played tug of war ONE time and it ripped in half. Not durable at all. Did not hold up well.
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Reviewed in the United States on April 6, 2026