Complete Fuel Bowl Seal Kit for Ford 7.3L (99-03) - GZ-7-003
11 Viton o-rings and 4 Parker® fuel sleeves. 2 Fluorosilicone o-rings for the 7.3 yellow fuel drain valve core to fix your 7.3L Fuel Leak.
- 1 o-ring for the drain valve stem
- 2 o-rings for the drain valve to bowl seals
- 2 o-rings for the Water-in-Fuel sensor/Fuel Heater
- 1 o-ring for the Fuel Pressure Regulator housing
- 1 o-ring for the regulator piston bushing
- 2 o-rings for the fuel back check piston assembly
- 2 o-rings for bowl plugs
- 2 - 1/4" sleeves for the fuel lines feeding the cylinder heads
- 1 - 5/16" sleeve for the fuel return line
- 1 - 3/8" sleeve for the fuel feed line.
Order of 1 is a set of 11 o-rings and 4 sleeves.
NOTE: This kit does not contain the REGULATOR POPPET SEAT. This is a separate kit only available as a FORD kit. The Regulator Rebuild kit can be purchased separately as F81Z9B249BB on our website.
NOTE: If you remove the fuel rail lines from the cylinder heads, this kit contains the fuel sleeves for the filter bowl ends only. It is recommended to also replace the sleeves on the cylinder head end of the fuel rail lines once they have been removed as they will no longer seal properly. Order part GZ-7-004 to supplement this kit.
O-ring Identification Chart - Click Here
146 Reviews Hide Reviews Show Reviews
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Excellant Product
satisfied customer
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Fuel Bowl Seal Kit
Worked great, take your time with the install. I didn't install the internal seals as my leak started after recent fuel filter replacement. No leaks now, which is nice!
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Fuel bowl seal kit
All orings are quality and fit as advertised. If you want to do the fuel return that is a different kit. Already had the frx so all is good. Would definitely recommend. Super easy with riffraffs instructions.
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Riffraff Diesel: Complete Fuel Bowl Seal Kit w/ Fluorosilicone Drain Orings
Viton/fluorosilicone O-rings provide 15–20+ year service life, superior resistance to post-2006 diesel fuel chemistry, and significantly higher heat tolerance compared to Buna-N rubber seals, which on average have a 3-year service life.
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Fuel bowl seal kit 99-03
Good quality orings would buy again 100%
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Fuel Bowl O'ring kit
Finally a good set of proper o'rings and a size chart with descriptions! Quickly rebuilt my leaking fuel bowl and no leaks after two weeks.
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Works as intended
High quality, everything fits and seals up as intended.
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Complete kit, high durability, easy installation
Complete seal kit for injection pump fuel bowls, including fluorosilicone O-rings resistant to modern fuels. Keeps your fuel system leak-free and reliable.
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O ring fuel filter replacement
The O ring replacement was very easy. Instructions supplied were comprehensive. Great value for the money.






