EXCELFU 6.0 Blue Spring Upgrade for Ford Powerstroke 2003-2007 F-250/F-350/F-450/F-550
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Description
xUpgrade your 6.0 Powerstroke fuel system
Elevate the performance of your Ford 6.0L Powerstroke with the EXCELFU 6.0 Blue Spring Upgrade Kit. This upgrade replaces Ford part 3C3Z-9T517-AG and is designed for 2003–2007 F-Series Super Duty trucks as well as the 2003–2005 Excursion. Built to complement the way you use your truck, this kit aims to deliver a steadier fuel rhythm and a cleaner install path without altering other components.
What’s in the kit
- 1 upgraded blue stainless steel spring
- 1 fuel pressure regulator housing
- 4 rubber O-ring seals
- 4 bolts
- 3 orifice seals
Key benefits you may notice
- Increase fuel pressure by 10–15 psi, supported by the kit’s design
- Potentially longer injector life through more stable fuel regulation
- All-in-one upgrade with a focus on fit and durability
- Blue stainless steel spring adds a tactile, durable touch to the fuel system
Compatibility and fit
The upgrade targets Ford 6.0L Powerstroke engines across the listed models: 2003–2007 F-250, F-350, F-450, F-550 Super Duty, and 2003–2005 Excursion. It is designed to install with common hand tools and includes every component needed for a complete replacement, reducing the need to source separate parts.
Easy installation and real-world use
Designed for a straightforward install that can be completed in minutes, the kit ships with all accessories in one box. In daily driving, you might notice a steadier fuel response during quick throttle changes and under load, while highway cruising could feel more consistent as operating pressure remains stable under varying conditions.
Quality and purpose
Crafted with a corrosion-resistant blue spring and durable housing, this kit focuses on reliable operation and a clean engine bay appearance. It provides a targeted upgrade path for drivers who want to explore potential improvements in fuel regulation and system behavior, without implying guaranteed results.
FAQ
Q: Is this kit compatible with all 6.0L Powerstroke models?
A: Fits 2003–2007 Ford 6.0L Powerstroke F-250, F-350, F-450, F-550, and 2003–2005 Excursion.
Q: What’s included and how easy is the installation?
A: Includes blue spring upgrade, regulator housing, O-rings, bolts, and seals; designed for quick install with standard hand tools.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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