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Ford 3C3Z-9T517-AG Fuel Pressure Regulator "Blue Spring" Kit
PART#
3C3Z-9T517-AG | SKU FO3C3Z-9T517-AG
★★★★★
Vehicle Fitment For:
2003-2007 Ford 6.0L Powerstroke
See full application list below
$109.87
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Description
The Ford 3C3Z-9T517-AG Blue Spring upgrade is a low-cost, must-have modification that will increase fuel pressure on your 6.0L Powerstroke. Even simple aftermarket performance upgrades can easily challenge the limits of your stock fuel system. Increasing the fuel pressure will help prevent damage to your injectors and even extend injector life. Common pressure increases can be 10-15PSI as well as increased engine performance, increased driveability and smoother power delivery.
Features:
- Easy Upgrade
- Increased Fuel Pressure
- Can Help Extend Fuel Injector Life
- Great For Stock & Modified Trucks
Manufacturer Warranty*:
2 Year Unlimited Mileage
2 Year Unlimited Mileage
Reviews For Ford 3C3Z-9T517-AG
Verified Buyer
Missing Parts
N (NY) | February 2nd, 2026
Kit was missing several o-rings and gaskets
Note From Store Owner: Thank you for your review. We sincerely apologize that your order arrived with missing components. We understand how disappointing and inconvenient this can be, especially when you’re ready to use or install the product. This is not the level of quality or service we strive to provide. Our team would like the opportunity to resolve this as quickly as possible. If there's anything we can do to make things right, please don’t hesitate to reach out to our Customer Service Team using the help desk feature on our website.
Verified Buyer
Blue spring upgrade
Stosh (California) | August 6th, 2024
Excellent parts that fit perfectly!!! Thank you for the quick delivery as well!!!
Verified Buyer
Blue spring kit
Mikus 42 (Long Island NY) | May 31st, 2024
I haven’t yet installed the kit, however it came quickly and is an original equipment Motorcraft part as promised. So far, so good. Once installed, I’ll post another review of how it performs. That being said, the purchase and shipping experience was flawless and quick shipping. Thank you, XDP
Verified Buyer
Blue spring kit
Alex (Indiana) | March 15th, 2024
Worked like a champ! Boosted fuel pressure to 11 psi for me. Excellent bang for your buck!
Verified Buyer
Fast delivery and exactly what I needed.
Griswold (Idaho) | September 9th, 2023
I live in a pretty remote area, so nothing gets delivered on time. I ordered the blue spring kit on Tuesday and it arrived on Thursday. Got the diesel leak taken care of and replaced all the other O-rings the kit came with. I couldn’t be more satisfied with my purchase.
Verified Buyer
Great product
Kenneth (AL) | August 20th, 2023
Product is as advertised. New in bag Ford parts.
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Frequently Asked Questions
Does it come with instructions?
No, you must refer to your Engine Service Manual for disassembly and assembly instructions or take a look on the forums for some helpful installation references. http://www.thedieselstop.com/forums/f...
Will this fit the early 2003 6.0L?
Yes, this will fit all 2003-07 6.0L's.
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Specifications For Ford 3C3Z-9T517-AG
MPN
3C3Z-9T517-AG
SKU
FO3C3Z-9T517-AG
ID
12590
Manufacturer Name
Ford
Shipping Weight
1.00 lb.
Shipping Length
10 in.
Shipping Width
8 in.
Shipping Height
2 in.
Fuel Type
Diesel
Manufacturer Warranty*
2 Year Unlimited Mileage
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Cross Reference #
3C3Z9T517AG, 3C3Z-9T517-AA, 3C3Z9T517AA, 3C3Z-9T517-AE, 3C3Z9T517AE, 3C3Z-9T517-AD, 3C3Z9T517AD, 4C2Z-9C968-A, 4C2Z9C968A, 4C2Z-9T517-AA, 4C2Z9T517AA, 9T517, 522038, 522-038, 904-490, 904490, R81001, 904-239, 904239, PRU1
Internal
L0R17
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