FPR Housing - Billet Aluminum w/ Pressure Shim Springs (GZ-7-033)

Description
Reviews

FPR Replacement Housing - Billet Aluminum 99-03 7.3L

With 3 springs to allow you to set your fuel pressure to the performance levels that you wish to achieve

If you have broken the threads from the fragile stock housing or if you just want to increase your fuel pressure for better performance, this Heavy Duty billet housing with interchangeable springs is your solution. Manufactured to OEM measurements, it will easily replace the cast factory regulator housing.

The recommended installation procedure is to install the cap with the fuel bowl removed from the engine bay. You will need to purchase the compression sleeves for all 3 hard lines attached to the fuel bowl separately as they are not reusable seals. (part # 7-004; 7-006)

Three different fuel pressure spring settings*

58-61 psi silver spring (Stock pressure)
62-65 psi gold spring
67-70 psi black spring

Also included in the kit is a new housing to fuel bowl o-ring and 2 new stainless steel mounting bolts.

Due to the extreme weakness of the factory housing where the threaded compression fitting meets the housing body, we have received numerous calls from customers that have broken the threads off of the factory housing. Usually when this happens it is necessary to cut off the flare end of the hard line in order to remove the broken piece and compression nut from the line. The hardline then needs to be re-flared but it is now shorter and may be difficult to connect back to a factory housing.

With this in mind, we have made this housing wider than the original to compensate for those that have had to cut the end of the hardline off to repair this defect.

*Note: Fuel pressure data was gathered by using a analog mechanical guage on a test bench using a 2001 fuel bowl with no fuel filter and a Walbro GSL-392 fuel pump. The housing was then moved to live testing on a 2002 7.3L F350 and using multiple springs, a digital fuel pressure gauge rated at 1/2 of 1% accuracy and a stock Ford Bosch fuel pump, identical data was collected. Due to accuracy tolerances of various pressure gauges and spring tensions from the manufacturing process, your pressure readings could have variances from these results.

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5
COmplete Kit

Posted by Unknown on Apr 2nd 2026

Great kit, came complete with everything I needed to swap out the cracked factory cap.
5
Great Replacement Housing, better than stock.

Posted by Walter P Brown on Dec 22nd 2025

A great replacement for the stock housing.
5
FPR

Posted by Keith Lane on Feb 24th 2025

Great product, easy install with fuel bowl in vehicle. Feels more power when climbing hills at FT. Installed in 01 7.3L
5
FPR housing

Posted by JR WALKER on Aug 27th 2024

Great product! Directions were accurate. Resolved my problem
4
Great Part

Posted by SandyG on Aug 2nd 2024

Excellent part, only think it should come with the Parker rubber seal for the return line. Well made and easy to install.
5
FPR

Posted by Dana on Jul 17th 2024

Product seems solid and looks like it will last much longer than the original. The added springs are also an added bonus.
4
FPR Housing with springs

Posted by Tyler on Apr 21st 2024

The housing fits perfectly though it’s pretty hard to tell which spring is what, either way it’s an obvious improvement to fuel flow!
5
Personal review

Posted by Carter sarkinen on Aug 11th 2023

The shipping was unexpectedly fast, and the packaging was great. It was tricky to get in but I didn't remove my alternator bracket for the fuel lines to move freely, but it looks a lot nicer than the old FPR Housing and I'm greatly satisfied with the product I will continue shop on riffraff!
5
Billet FPR housing

Posted by Jason Smith on Apr 21st 2023

Quality piece, easy install