Search  for anything...
Sinister Diesel

Sinister Diesel Blue Spring Kit with Billet Spring Housing - Fuel Regulator Kit - 2003-2007 Ford Blue Spring Kit 6.0 Powerstroke – Fast Install – Replace OE # 3C3Z-9T517-AG 3C3Z9T517AG

    • Based on 477 reviews
Condition: New
Checking for product changes
$87.00 Why this price?

Buy Now, Pay Later

As low as $14.50 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Nov 26
Order within 13 hours and 17 minutes
Available payment plans shown during checkout

Features

  • IMPROVED PERFORMANCE: The Ford Powerstroke 6.0L 2003-2007 models cant live up to their full potential thanks to the low quality factory parts that keeps holding them back. Sinister Diesel 6.0 Blue Spring Kit Upgrade helps you increase the full pressure safely and effectively up to 15% to give your ride a boost in performance you never thought possible.
  • THE PERFECT FIT: Sinister Diesel Blue Spring Kit with Billet Spring Housing made specifically for 2003 2007 Ford Powerstroke 6.0L Diesel Models to provide a safe, fast and reliable install to boost performance and improve fuel economy. It comes with everything you need to install it including O-Rings and hard parts to rebuild the fuel pressure housing
  • Replaces Ford Part Number 3C3Z-9T517-AG
  • Made in the USA

Manufacturer: ‎SINISTER MFG


Brand: ‎Sinister Diesel


Model: ‎SINSDFUELBLK60


Item Weight: ‎11.3 ounces


Product Dimensions: ‎9 x 5 x 4 inches


Item model number: ‎SINSDFUELBLK60


Is Discontinued By Manufacturer: ‎No


Exterior: ‎Chrome, Painted, Polished


Manufacturer Part Number: ‎SINSDFUELBLK60


Date First Available: September 24, 2013


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Nov 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Well made. Includes everything needed.
Excellent installation instructions.
Reviewed in the United States on July 25, 2023 by Joe
    • Ez install
My first diesel experience. Not a diesel guy. Can tear a gasser down and rebuild it but was nervous about diesels. Great instructions easy install. Don’t have a FP gauge so couldn’t tell you that aspect but replaced the oem spring. No problems. Big blue housing looks cool under the hood 👍🏻 *edit* Still can’t express how important a fuel pressure gauge is!! Had this on for maybe a year? Lost an injector and while it was down and before I put new injectors in I added a gauge found out I had little more than 30pounds. Took this apart and the larger o-ring had deteriorated and a large chunk had become lodged in the plunger, a wonder I had any pressure at all. Not sure if it was the biodiesel ,which is all I can get, or what but the boring didn’t last. Add a gauge and don’t just trust that this will fix it and you won’t ever have to worry again... all that aside I’ve now replaced it with sinisters regulated return ... show more
Reviewed in the United States on October 11, 2019 by FordGuy
    • Works great
Review Image by Amazon Customer Amazon Customer
Installed on my 6.0 power-stroke, made my fuel pressure higher then the worn out original, plus looks great in the engine bay.
Reviewed in the United States on March 26, 2023 by Amazon Customer Amazon Customer
    • Fits and works perfect on 2005 F250 6.0L
All parts included, minus wrenches, to upgrade factory parts to this blue billet blue spring mod. Installs in and 40mins. Highly recommended. Will update if anything changes. I saved $27 buying it on Amazon vs manufacturer site.
Reviewed in the United States on February 9, 2023 by John
    • Year and 6.0 only
Great kit easy to install, a must i you have over 150,000 miles
Reviewed in the United States on May 13, 2023 by Jeep n go
    • Does the job
Nice product 70 psi after install. If you have a fuel gauge sender, the billit housing is really thick and this required a small extension to keep the sender from hitting the regulator housing. With that said, great quality and does the job!
Reviewed in the United States on October 21, 2021 by Mayda Fosnight
    • Everything perfect fit
Direct quality
Reviewed in the United States on August 15, 2022 by Allen
    • Good product
Good product
Reviewed in the United States on May 31, 2022 by Matthanks

Can't find a product?

Find it on Amazon first, then paste the link below.