
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
For Your Every Summer RSVP, with Code: SUMMER15
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
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
4.2 ★★★★★
Based on 1345 reviews
Sort
Product Reviews
★★★★★ 5
My Go-To Toner After Trying Many Others
Scent: Unscented, Size: 12 Fl Oz (Pack of 1)
I’ve tried many toners over the years, including higher-end brands, and this one continues to stand out for both performance and price. It does exactly what I need without unnecessary extras.
The formula feels gentle and effective, and I really appreciate that it’s alcohol free and fragrance free. Those two things are especially important to me, and this has been the only toner I’ve felt comfortable using during pregnancy. It doesn’t irritate my skin and fits easily into my daily routine.
Despite the affordable price, it performs just as well—if not better—than many more expensive options I’ve used in the past. My skin feels clean and refreshed after using it, without any tightness or residue.
Overall, this is a reliable, no-nonsense toner that delivers great results at a very reasonable price. If you’re looking for a simple, fragrance-free option that works well without breaking the bank, this is an easy recommendation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
★★★★★ 5
Liquid facial magic!
Scent: Coconut Water, Size: 12 Fl Oz (Pack of 1)
I love this stuff. I use it daily as part of my facial routine and it has become one of those products I don’t even think about anymore because it just works.
It smells good without being overpowering and does a great job of helping control excessive oil buildup on my face. Nothing harsh, nothing drying, just clean and refreshed skin. Right after using this, I follow up with a facial moisturizer and the combo works beautifully. My skin feels balanced instead of tight or angry, which is exactly what I’m going for.
I know the label says men can use this as an aftershave, but that’s a hard pass for me. I stick to soothing, purpose-built post-shave products, specifically from Wholly Kaw. That stuff smells like it was handcrafted by skincare deities who truly care about your face. This toner is staying firmly in the “daily skincare” lane, where it shines.
Another big plus is how gentle it is. No burning, no weird tingling, no regret. Just a calm, refreshing step that makes my skin feel like it’s being treated with respect.
And the price? Under $10. That alone keeps me coming back. Honestly, I think they could charge a few dollars more for how well this performs, but I won’t complain about paying less for fantastic facial liquid magic.
Simple, effective, affordable, and a permanent part of my routine. My face approves.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
★★★★★ 5
THAYERS Lavender Witch Hazel Toner: Time-Tested Elegance in a Bottle!
Scent: Lavender, Size: 12 Fl Oz (Pack of 1)
Embarking on a journey down memory lane with THAYERS Lavender Witch Hazel Facial Toner has been nothing short of a delightful reunion. This timeless brand, known since my youth, has proven its mettle yet again. Let's dive into the aromatic, moisturizing wonder that is the Lavender Witch Hazel Toner:
Quality Infused with Elegance (5/5): THAYERS brings a touch of timeless elegance to skincare, and this lavender-infused toner is no exception. The quality is unmistakable, leaving my skin feeling pampered and rejuvenated after each use.
Cleansliness at its Best (5/5): The toner's prowess in cleansing is unparalleled. It effortlessly removes dirt and impurities, unveiling a refreshed and squeaky-clean complexion. My skin thanks me for this daily ritual of cleanliness.
Moisturizing Magic (5/5): The moisturizing effect is like a gentle caress for the skin. Unlike some toners that leave your face feeling parched, THAYERS Lavender Toner ensures that my skin is not just clean but incredibly moisturized after every application.
Refreshing Elixir (5/5): Ah, the refreshing burst of lavender! While opinions on the strength of the scent may vary, I find the lavender notes to be a delightful touch. The toner rejuvenates not just my skin but also my senses, making each application a mini spa moment.
Better than the Expensive Competitors (5/5): Sometimes the best things come in unassuming packages. Users have attested that this toner outshines even pricier competitors, proving that quality doesn't always have to break the bank.
Mixed Durability Verdict (4/5): Opinions are divided on durability, but for me, the overall benefits outweigh any minor considerations. The toner's efficacy in daily use makes it a staple in my skincare routine.
Generations-Long Trust (5/5): THAYERS is a brand that has stood the test of time, transcending generations. Its legacy of trustworthiness extends beyond my own experience, connecting with others who have relied on its skincare wonders.
Lavender Scent Aspiration (4/5): While I had hoped for a stronger lavender scent, the subtle notes are still a pleasant addition to my skincare ritual. The product's efficacy compensates for any scent expectations.
In conclusion, THAYERS Lavender Witch Hazel Facial Toner is a testament to the enduring charm of a trusted brand. Its quality, cleanliness, and moisturizing benefits make it a staple in my skincare routine and a connection to the past. Whether you're a longtime fan or a newcomer, this toner is a timeless treasure for your skin. Cheers to THAYERS for continuing to deliver skincare excellence!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2024
★★★★★ 5
Lasts awhile! Good product
Scent: Rose Petal, Size: 12 Fl Oz (Pack of 1)
Cleans without overdrying. Leave skin feeling clean, no stickiness. Pleasant light scent that doesn't linger. I get my moister from other products so this one idk if it moisturizes by itself. Good value for the money, you get a lot so it lasts awhile.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
★★★★★ 4
Love! Smell is nice, helps with dry skin
Scent: Cucumber, Size: 12 Fl Oz (Pack of 1)
I have been using Thayers for years. My skin is sooo dry and tight post shower. I put this in a small mister bottle, and Mist my face.
Scalp- my scalp gets itchy, I use this, witch hazel, apple Cider Vinegar and water in a dropper. Works amazing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
recommand products
Birreria
46.80
Haussmann Style
52.40
Halloween Cat Cosplay Accessories Set Cat Ear Headband With Leopard Print Masquerade Mask For Women Halloween Cat Costume Access
12.59
Vintage Purple White Stripe Winter Ski Hat Beanie
24.99
500 Pack Cotton Swabs, Individually Wrapped Cotton Swab, Individually Wrapped Double Tipped Wooden Sticks For Ear, Make-Up(4Pcs
31.38