SKU: 39169025466

Sinister Blue Spring W/Adjustable Spring Housing & Filter Cap 03-07 Ford 6.0L Powerstroke

Sale price$117.00 Regular price$130.00
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Sinister Blue Spring W/Adjustable Spring Housing & Filter Cap 03-07 Ford 6.0L PowerstrokeIncrease your fuel pressure by 10psi and help your 6. 0L Ford Powerstroke run better and longer with the Sinister Diesel Blue Spring Kit with Billet Adjustable Housing and Billet Filter Cap. The blue spring kit is one of the quickest and easiest upgrades you can install on your 6. 0L Ford Powerstroke. This kit not only helps with longevity, it can also quiet the engine down, and rev up faster which in turn helps spool the turbo faster. Maintaining

Increase your fuel pressure by 10psi and help your 6.0L Ford Powerstroke run better and longer with the Sinister Diesel Blue Spring Kit with Billet Adjustable Housing and Billet Filter Cap. The blue spring kit is one of the quickest and easiest upgrades you can install on your 6.0L Ford Powerstroke. This kit not only helps with longevity, it can also quiet the engine down, and rev up faster which in turn helps spool the turbo faster. Maintaining proper fuel pressure prevents the injectors from outflowing the stock fuel pump so no air is introduced into the injection system.

The Adjustable Spring Housing is a major benefit for those individuals that are running much larger injectors as this will give you the ability to raise the pressure with the simple turn of a screw. Also, as miles rack up on your truck with this kit, springs can settle, this housing will allow you to return the truck fuel pressure back to the proper setting. Sinister Diesel suggests running your fuel pressure between 55-68psi. The factory housing is constructed of cast aluminum and is known to leak or "weep" from the sides of the housing. The thicker and stronger billet construction eliminates this issue and also adds a little style under the hood.

The OEM plastic fuel filter cap is notorious for cracking. Leaking fuel in the engine bay is just asking for trouble. The Sinister Diesel replacement cap is constructed from a solid chunk of billet aluminum and is machined for a perfect fit and eliminates the risk of cracking. This cap is anodized Sinister Blue for corrosion resistance and features a 1/8th inch NPT port for testing fuel pressure.

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Exchange/Return Notes
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SKU: 39169025466

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4.6 ★★★★★
Based on 28 reviews
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Taylor Ashley
Lexington, US
★★★★★ 4
Okay serum, not as good as the cream though
I am obsessed with the cream version of this so I thought I’d give this a try. The dropper top allows for easy application. The formula is light and non greasy and absorbs easily. No harsh fragrances. I would use it when I had eczema flares on my face and feel like it didn’t work near as well in helping with skin irritation as the cream does. As of now I don’t use it as part of my regular skin care. Do I think it’s a bad product? No, but it didn’t really work wonders for me. Not sure I would purchase again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
E
Verified Purchase
Elizabeth from Houston
Dallas, US
★★★★★ 5
Helps with redness and softens skin
I have sensitive, mild rosacea skin. Had a facial recently and the aesthetician suggested I get a serum to help with moisturizer as I am almost 40. I’ve tried a lot of serums and either they are sticky and not really hydrating or break my skin out in a rash. This serum is amazing. Helps calm the redness in my cheeks and my skin is moisturized and soft all day. It feels a little sticky at first but it goes away. I apply in this order OSEA sea mineral mist toner to prep the skin, this serum and top off with Chanel La Solution 10 for sensitive skin.
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Reviewed in the United States on December 27, 2025
C
Verified Purchase
carolyn
Alexandria, US
★★★★★ 5
Sensitive skin
Such a good product. I use after micro needling when skin is sensitive. Also a great product to use as a barrier serum when starting tretinoin cream.
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Reviewed in the United States on April 24, 2026
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Verified Purchase
Lindsay
Los Angeles, US
★★★★★ 5
Saved my skin during an eczema flare up
This saved my skin! I had an eczema flare on my face, and my usual products weren’t working. A friend recommended the Avene brand and within 3 days of using this rescue barrier serum, my flare was almost completely gone! This saved my face!
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Reviewed in the United States on April 11, 2026
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Verified Purchase
B Helton
Louisville, US
★★★★★ 1
PLEASE REVIEW — FORMULA CHANGED!!!
I wish I would’ve posted a review PRIOR to the formula changing but just know that I LOVED this serum. I’ve struggled with hormonal acne (PCOS) and eczema for as long as I can remember. Finally, last summer my dermatologist put me on (3) different RX including Spironolactone and Accutane. I was so tired so I stopped everything except for CeraVe cleanser, retinol (Tretinoin) and CeraVe healing ointment. My made up skin routine was working until I used too much Tretinoin and burned my face. I had read great reviews about this product so I thought, I might as well try it — and IT WORKED! I’ve been using this product for almost a year and I loved it. However, 3 weeks ago when I ordered it, I noticed the bottle had a green tint. I could tell after one use that the feel of the serum was different, more watery, not as thick as it used to be. The smell was also different. Still, I kept using it for nearly 2 weeks and I experienced 2 breakouts! Sure enough, I stopped the product and within a few days, my skin was back to normal. I am very upset because as someone who has extremely sensitive skin, this worked but unfortunately, the new formula isn’t for me.
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Reviewed in the United States on May 14, 2026

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