Upgraded Fuel FPR Spring Kit 99-03 7.3L
Upgrade your weak original FPR spring in your 1999-2003 7.3L Powerstroke. Choose from 3 springs depending on what pressure you want to run, silver ~55psi, ~gold 62psi, black ~70psi. Kit includes the mounting oring, as well as the fuel sleeve on the return tube. All parts 100% Made in the USA.
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Fpr spring kit
Great kit! Used the gold song to bump up the fuel pressure a little and really woke the truck up! Very satisfied
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Fuel pressure return spring
I have 410,000 miles on my all original stock 7.3 with only 125 horse power program in it. I thought it was just getting old and tired it idles rough and smoked when I first start it up in the morning I didn't have a fuel pressure gauge so I don't know what my fuel pressure was before or after the job I use the gold spring compared to the one I pulled out it looked about 1/4 inch taller. I can't believe the difference it made it feels like I rebuild the motor and the Turbo it idles smooth has tons more power and so far I haven't seen the smoke in the morning. Even a passenger noticed how smooth it was running. I wouldn't have believed it unless I did it myself, absolutely the best $13 I've spent on my truck since I bought the topless hula dancer for my Dash!
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Fuel pressure springs
I haven’t installed them yet but they look like they are very well made
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upgrade that worth it
thanks clay for continuing to provide quality products at a reasonable price and fast shipping. you definitely help me keep the ol' girl on the road and running in top shaoe at that!
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Fuel pressure
Made a big difference. Completely worth the money. Everything you need in one package.
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It’s is a good start to upgrade
It’s better then it was but if you want a upgrade I’d do the fuel cross over
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Spring Upgrade
This spring definitely mad a difference along with other fuel upgrades better throttle response and pickup and go thanks riffraff I plan on ordering more products particularly the conversion kit from early 99 to late 99
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Amazing!!
I cant believe the results!! So much power difference. Cool part is you get 3 springs in this pack. Use the one you want and sell the other 2 to your 7.3 friends & family. These springs will not disappoint!!
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Great products
This is one of many parts I have ordered from Riffraff. All there parts are way above the competition. Instruction manuals are spot on.






